this quetion is hard for me

This Quetion Is Hard For Me

Answers

Answer 1

Answer:

(1, 4)

Step-by-step explanation:

I use Desmos for any graph related math problems and it's really helpful! It's completely free too. You should check it out :)

Hope this helps!


Related Questions

Multiply and simplify the product. (3 – 5i)(–2 4i) select the product. 14 2i 14 22i 15 22i 26 2i

Answers

The product of the expressions (3 – 5i) and (–2 + 4i) is 14 + 2i. Then the correct option is A.

What is multiplication?

It is also known as the product. If the object n is given to m times then we just simply multiply them.

The expressions are (3 – 5i) and (–2 + 4i).

Then the product of the expressions will be

(3 – 5i)(–2 + 4i)

–6 –10i + 12i –20i²

We know that i² = –1, then we have

–6 + 2i –20 (–1)

–6 + 2i + 20

14 + 2i

More about the multiplication link is given below.

https://brainly.com/question/19943359

Answer: B- 14+22i

Step-by-step explanation: edge 2023

What is the answer to this?

Answers

Answer:

A ~ 34.63201

Step-by-step explanation:

Determine the slope of the line that passes through the points (9,-3) and (-9,-6)?​

Answers

Answer:

slope = 1/6

all steps in picture. :)

(9,-3)(-9,-6)

Slope:-

m=-6+3/-9-9m=-3/-18m=1/6

Alexis put $2000 in a savings account. After 4 years, she had $2543 in the
account. What rate of interest did she earn? Use the formula A = Pert, where A

Answers

Alexis would have earned $543 in interest

[tex]~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$2543\\ P=\textit{original amount deposited}\dotfill & \$2000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &4 \end{cases}[/tex]

[tex]2543=2000e^{\frac{r}{100}\cdot 4}\implies \cfrac{2543}{2000}=e^{\frac{r}{25}}\implies \log_e\left( \cfrac{2543}{2000}\right)=\log_e\left( e^{\frac{r}{25}} \right) \\\\\\ \ln\left( \cfrac{2543}{2000}\right)=\cfrac{r}{25}\implies 25\ln\left( \cfrac{2543}{2000}\right)=r\implies 6\approx r[/tex]

please help me solve this

Answers

Answer:

solve by using pythagoras theorem then

square on both side

Danny’s supermarket has 1 litter water bottles normally priced at $1.50 reduced 25%
Marta’s supermarket has bottles of water still priced at $1.50 but offer 25% bigger bottle.
Which supermarket has the best buy?

Answers

Answer: Danny's supermarket

Step-by-step explanation:

Danny's price- 0.75x1.5= $1.12 for 1 liter water bottle

Marta's price- $1.50 for 1.25 liter water bottle

1.12x1.25=1.40, if Danny was selling a 25% bigger bottle(making the bottle size equal to Marta's) it would cost $1.40, the lower price

circle theorem - find x - 2 lines are tangent to a circle

Answers

Answer:

B. 140

just do an elimination process to figure out 160 is more wider and 90 is just too small

so it was between 100 and 140

Which choice represents the expression below as a single exponential
expression?
4^5 • 42
• A. 410 . 410
O B. 410
O c. 43
O D. 47

Answers

Answer:

D

Step-by-step explanation:

When multiplying numbers with the same base but different exponents, add the exponents together.

Mr Lok is putting a pool in his backyard. His backyard is 10 m long and 8 m wide, while the pool he wants has an area of 8m2. how much grass will be left in his backyard?

Answers

Answer:

hope this helps and make me brainliest

Step-by-step explanation:

. You have that:

- The homeowner want the length of the swimming pool to be 4 feet longer than its width.

- He wants to surround it with a concrete walkway 3 feet wide.

- He can only afford 300 square feet of concrete for the walkway.

2. Therefore, the tota area is:

At=L2xW2

L2 is the lenght of the walkway (L2=L1+3+3⇒L2=(W1+4+6)⇒L2=W1+10).

W2 is the width of the walkway (W1+3+3⇒W2=W1+6)

3. The area of the walkway is:

A2=At-A1

A2=300 ft²

4. Therefore, you have that the width of the swimming pool is:

A2=(W1+10)(W1+6)-(W1+4)(W1)

300=(W1²+6W1+10W1+60)-(W1²+4W1)

W1²+16W1+60-W1²-4W1-300=0

12W1-240=0

W1=240/12

W1=20 ft

5. And the length is:

L1=W1+4

L1=20+4

L1=24 ft

The radius
of a sphere is 6 units.
Which expression represents the volume of the sphere,
in cubic units?
O ¾7(6)2
• 57(6)3
0 -(12)2
5a(12)3

Answers

Answer:

4/3 πr^3

= 4/3π (6)^3

therefore the answer is C

A line passes through the point (-8,6) and has a slope of -5/4

Write an equation in point-slope form for this line

Answers

Answer:

y = 5/4x + 6

Step-by-step explanation:

take the y coordinate in (-8,6) which is 6.

take the slope.

y = (put slope here)x + (put y coordinate here) !

thats it :) have a good day!

NEED HELP ASAP 20POINTSS

Answers

Answer:

a) Low: 45 Q1=80 Q2=89 Q3=94 High=100 b) Look at attached image

Step-by-step explanation:

Organized numbers: 45,70,72|,80,|82,85,88|,89,|90,92,92|,94,|98,100,100

mark medians

Graph created in Desmos

can someone simplify this?? ty!
-(x-8)²+4

Answers

Answer:

-x² + 16x - 60

Step-by-step explanation:

Given expression:

-(x - 8)² + 4

Step 1. Insert brackets to isolate the "-" from the (x - 8)².

           ⇒ -(x - 8)² + 4

           ⇒ -[(x - 8)²] + 4

     

Step 2. Use the formula (a - b)² = a² - 2ab + b²

          ⇒ -[(x - 8)²] + 4

          ⇒ -[x² - 2(x)(8) + 8²] + 4

Step 3. Open the parenthesis

          ⇒ -[x² - 2(x)(8) + 8²] + 4

          ⇒ -x² + 2(x)(8) - 8² + 4

Step 4. Simplify as needed

          ⇒ -x² + 16(x) - 64 + 4

          ⇒ -x² + 16x - 60

Sasha ordered a kite online. When it arrived the kite was missing the crossbar. What length crossbar does Sasha need to complete the kite?
4 in. 4 in.
crossbar

Answers

Answer:

[tex]\sqrt32} inches[/tex]

Step-by-step explanation:

The crossbar and two given lengths form a right triangle.  We know this because we see a right angle marked on the diagram in between the two given sides.

I've tried everything​

Answers

Answer:

14,200 pounds.

1. Convert the mixed fraction into improper fraction:

To convert a mixed fraction into an improper fraction, we must multiply the whole number with the denominator and add the numerator to the product. The denominator of the improper fraction will remain the same as the denominator in the mixed fraction.

[tex]\implies 7 \dfrac{1}{10} = \dfrac{(7 \times 10) + 1}{10} = \dfrac{71}{10}[/tex]

2. Determine the number of pounds in 71/10 tons

It should be noted that:

Conversion: 1 ton = 2000 pounds

Now, let's use the unitary method to determine the amount of pounds in 71/10 tons. Multiply both sides by 71/10 to do so.

[tex]\implies \text{1 ton = 2000 pounds}[/tex]

[tex]\implies \text{1 ton} \times \dfrac{71}{10} = 2000 \times \dfrac{71}{10}[/tex]

[tex]\implies \dfrac{71}{10}\text{ ton} = 200 \times 71[/tex]

Simplify as needed:

[tex]\implies \dfrac{71}{10}\text{ ton} = 14,200 \ \text{pounds}[/tex]

quick?

Graph the circle with center (−1, 2) that passes through (−6, 2). Find the area in terms of π and to the nearest tenth. Use 3.14 for π.

Answers

Answer:

The area is 78.5.

Step-by-step explanation:

The formula for the area of a circle is π r^2

In this case, r = 5.

Which of the following equations are equivalent? Select three options.
2 + x = 5
x + 1 = 4
9 + x = 6
x + (negative 4) = 7
Negative 5 + x = negative 2

Answers

Solving them, it is found that the equivalent equations are given as follows: 2 + x = 5, x + 1 = 4, -5 + x = -2.

What are equivalent equations?

Equivalent equations are equations that have the same solution.

In this problem, the equations and their solutions are given as follows.

2 + x = 5 -> x = 3.x + 1 = 4 -> x = 3.9 + x = 6 -> x = -3.x - 4 = 7 -> x = 11.-5 + x = -2 -> x = 3.

Hence the equivalent equations are: 2 + x = 5, x + 1 = 4, -5 + x = -2.

More can be learned about equivalent equations at https://brainly.com/question/2972832

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Which is the best prediction of the test score for someone who completes 14 assignments? 20 70 50 100

Answers

70 because i supose that is from 20 questions

A man increased the amount of protein she eats every day from 48G to 54G by what percentage to Amanda increase the amount of protein she eats

Answers

Answer: 12.5%

Step-by-step explanation:

Increase is 54-48 = 6

6/48 × 100/ 1

600/48

Find the value of x.
91°
(7x)

Answers

Answer:

13

Step-by-step explanation:

This angle is called a reflective angle so the angles equal eachother. So put them equal to eachother and solve.

91=7x

x= 91÷7

x=13

please answer I'll mark brainliest ​

Answers

Answer:

126.96

Step-by-step explanation:

I NEED HELP PLEASE... HELPPPP MEEEE

Write a quadratic equation to represent each situation. Use your equation to answer each question. Be sure to define your variables and identify which is independent and which is dependent. Show all work. Round any decimals to the nearest hundredth.

1. A rocket is launched from a height of 10 meters with an upward velocity of 56 meters per second.

a. When will the rocket hit the ground?

b. What is the maximum height of the rocket?

c. After how many seconds does the rocket reach the maximum height?

2. A wooden deck of uniform width surrounds a rectangular pool as shown in the following image. The pool is 10 feet by 14 feet. What is the area of the wooden deck that surrounds the pool (not including the pool)?

a. If the deck is 3 feet wide, what is the area of the deck?

b. The area of the deck is 112 square feet. How wide is the deck?

3. A coffee shop sells 150 coffees a day at $3.50 apiece. They found for every $0.50 increase in price, they sell 10 fewer cups of coffee a day. The cups of coffee cost the shop $1.50 apiece.

a. How much should they charge to maximize their daily profits?

b. How many cups of coffee will they sell daily at that price?

c. What will their daily profits be?

Answers

Answer:

56. In the Vector Addition Lab, Anna starts at the classroom door and walks:

2.0 meters, West

12.0 meters, North,

31.0 meters, West,

8.0 meters, South

3.0 meters, East

Using either a scaled diagram or a calculator, determine the magnitude and direction of Anna's resulting displacement.

Answer: 30.3 meters, 172 degrees

To insure the most accurate solution, this problem is best solved using a calculator and trigonometric principles. The first step is to determine the sum of all the horizontal (east-west) displacements and the sum of all the vertical (north-south) displacements.

Horizontal: 2.0 meters, West + 31.0 meters, West + 3.0 meters, East = 30.0 meters, West

Vertical: 12.0 meters, North + 8.0 meters, South = 4.0 meters, North

The series of five displacements is equivalent to two displacements of 30 meters, West and 4 meters, North. The resultant of these two displacements can be found using the Pythagorean theorem (for the magnitude) and the tangent function (for the direction). A non-scaled sketch is useful for visualizing the situation.

Applying the Pythagorean theorem leads to the magnitude of the resultant (R).

R2 = (30.0 m)2 + (4.0 m)2 = 916 m2

R = Sqrt(916 m2)

R = 30.3 meters

The angle theta in the diagram above can be found using the tangent function.

tangent(theta) = opposite/adjacent = (4.0 m) / (30.0 m)

tangent(theta) = 0.1333

theta = invtan(0.1333)

theta = 7.59 degrees

This angle theta is the angle between west and the resultant. Directions of vectors are expressed as the counterclockwise angle of rotation relative to east. So the direction is 7.59 degrees short of 180 degrees. That is, the direction is ~172 degrees.

Useful Web Links

Vector Addition

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57. In a grocery store, a shopper walks 36.7 feet down an aisle. She then turns left and walks 17.0 feet straight ahead. Finally, she turns right and walks 8.2 feet to a final destination. (a) Determine the magnitude of the overall displacement. (b) Determine the direction of the displacement vector relative to the original line of motion.

Answer: (a) 48.0 feet; (b) 21 degrees from the original line of motion

This problem is best approached using a diagram of the physical situation. The three displacements are shown in the diagram below on the left. Since the three displacements could be done in any order without effecting the resulting displacement, these three legs of the trip are conveniently rearranged in the diagram below on the right.

Now it is obvious from the diagram on the right that the three displacement vectors are equivalent to two perpendicular displacement vectors of 44.9 feet and 17 feet. These two vectors can be added together and the resultant can be drawn from the starting location to the final location. A sketch is shown below.

Since these displacement vectors are at right angles to each other, the magnitude of the resultant can be determined using the Pythagorean theorem. The work is shown below.

R2 = (44.9 ft)2 + (17.0 ft)2 = 2305 ft2

R = Sqrt(2305 ft2)

R = 48.0 feet

The angle theta in the diagram above can be found using the tangent function.

tangent(theta) = opposite/adjacent = (17.0 ft) / (44.9 ft)

tangent(theta) = 0.3786

theta = invtan(0.3786)

theta = 20.7 degrees

This is the angle which the resultant makes with the original line of motion (the 36.7 ft displacement vector).

Useful Web Links

Vector Addition || Vector Components || Vector Resolution

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58. A hiker hikes 12.4 km, south. The hiker then makes a turn towards the southeast and finishes at the final destination. The overall displacement of the two-legged trip is 19.7 km at 309 degrees . Determine the magnitude and direction of the second leg of the trip.

Answer: 12.7 km, 347 degrees

Like the previous problem (and most other problems in physics), this problem is best approached using a diagram. The first displacement is due South and the resulting displacement (at 309 degrees) is somewhere in the fourth quadrant. (It is in the fourth quadrant because 309 degrees lies between 270 degrees or due South and 360 degrees or due East.) For communication sake, we will refer to the first displacement as A and the second displacement as B. Note that A + B = R. Since the magnitude and direction of the resultant is known, the x- and y-components can be determined using trigonometric functions. Since the angle of 309 degrees is expressed as a counterclockwise angle of rotation with due East, it can be used as the Theta in the equation.

Rx = R•cos(theta) = 19.7 km • cos(309 deg) = 12.398 km

Ry = R•sin(theta) = 19.7 km • sin(309 deg) = -15.310 km (the "-" means South)

Whatever the magnitude and direction of B is, it must add on to vector A in order to give a southward displacement of 15.310 km and a eastward displacement of 12.398 km. This could be expressed by mathematical equations as

I need help!
I need a answer quick!

Answers

Answer:

Step-by-step explanation:

1 1/4-2/3= 1 3/12-8/12= 15/12-8/12=7/12

7/12 simplified to 7/12

Answer:

kayla sold 7/12. Kayla sold less than Ethan

A company claims that 9% of the items produced on a new machine are defective.
The factory will get rid of the machine if the data indicates that the proportion of defective items is more than 9%.
They take a random sample of 300 items and 50 are defective.
What null hypothesis is appropriate?

Answers

Considering the situation described, the appropriate null hypothesis is given by:

[tex]H_0: p = 0.09[/tex]

What are the hypothesis tested?

At the null hypothesis, it is tested if the proportion is the expected one, that is, of 9%, hence:

[tex]H_0: p = 0.09[/tex]

At the alternative hypothesis, it is tested if there is enough evidence to conclude that the proportion is above 9%, hence:

[tex]H_1: p > 0.1[/tex].

More can be learned about an hypothesis test at https://brainly.com/question/26454209

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Given that 1 centimeter is approximately 0.4 inches, how many inches
are in 58 centimeters?
Round your answer to the nearest tenth.

Answers

Answer:

Hello,

To find amount of inches in 58 centimeters, you need to use the information given.

0.4 inches = 1 centimeter

??? inches = 58 centimeter

58 x 0.4

= 23.20

Hence your answer is 23.2 inches are in 58 centimeters

Hope this helps ^^

HELPP me please I beg

Answers

Answer: 78

Step-by-step explanation:

Area=b x h
13 x 6 =78

Answer:

78 m

Step-by-step explanation:

The formula to find the area of a rectangle or square = length * Height

A = L * H

In this scenario, the length is 6 and the height is 13

So the area (A) = 6 * 13 = 78

And don't forget your units ;)

For which interval is the average rate of change of f(x) negative?

Answers

The interval at which the average rate of change of f(x) is negative is from x = 0 to x = 2.5.

What is the average rate of change?

The average rate of change is a type of function that describes the average rate at which a quanity decreases or increases with respect to another quanity.

Generally, for a function with a negative average rate of change, the graph must face down and have a negative slope.

Based on the graph shown in the image attached below, we can deduce that the interval for which the average rate of change of f(x) is negative is from x = 0 to x = 2.5.

Read more on functions here: https://brainly.com/question/4246058

Will give brainlest and 50 points. thanks!

Answers

Answer:

A 5(0.5)^x

B 3(2)^x

C 5(3)^x

D 8(1.25)^x

E 8(0.75)^x

F 10(0.5)^x

Step-by-step explanation:

A 5(0.5)^x

(-1,10) goes by 1/2

B 3(2)^x doubles

C 5(3)^x triples

D 8(1.25)^x * 1 1/4

E 8(0.75)^x by 3/4

F 10(0.5)^x x 1/2

-1/3-4/9 i don't know how to subtract fractions

Answers

Answer: -7/9

Step-by-step explanation: Get the LCM of the denominator 3 and 9

Place both fractions using same LCM

You will have - 3/9 -4/9 = -7/9

Because they both have negative signs, you will add 3 and 4

Mark said, "in the data set,4, 5, 5, 8, the mean and mode the same. " Is he correct? Explain why or why not in your explanation make sure to state the value of the the means and the mode

Answers

Answer:

No

Step-by-step explanation:

the mean is 16 (add 4+5+5+8, then divide answer by 4) and the mode is 5 (occurs most in data)

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