PLEASE HELP!
a-b+c=3
a+b+c=7
Find b.
A) 1
B) 2
C) 3
D) 4
E) 5

Answers

Answer 1

Answer:

b

Step-by-step explanation:

I think the day of my birthday was a little more aware of my own life than the poem I think I c I

Answer 2

Answer:

B

Step-by-step explanation:

Given the 2 equations

a - b + c = 3 → (1)

a + b + c = 7 → (2)

Subtract (1) from (2) term by term to eliminate a and c

a - a + b - (- b) + c - c = 7 - 3 , that is

0 + b + b + 0 = 4

2b = 4 ( divide both sides by 2 )

b = 2 → B


Related Questions

Help please look at picture^^

Answers

Answer:

254.47

Step-by-step explanation:

A= 3.14 x r²

A = 3.14 x 9

A = 254.47

Hope this helps

Answer

254.3—- rounded

A= Pi times r squared - this is formula for area of circle

area=  3.14 Times 9 squared

3.14 times 81

254.3

make sure to substitute values!

I hope this helps!

please help me with this

Answers

Answer:

.38 or 38%

Step-by-step explanation:

I divided 44 by 116 then rounded

Answer: 38% of boys play an instrument.

Step-by-step explanation:

They are asking for the percentage of boys that play an instrument.

44 ÷ 116 = 0.379310...

Round to the nearest hundredth

0.38

Find the percentage

0.38 × 100 = 38 or 38%

I WILL GIVE BRAINLIST
The figure consists of a quarter circle and a parallelogram. What is the area of the composite figure? Use 3.14 for 10,
Round to the nearest whole number,
14 in
14 in.
15 in
Suom
Save and Exit
thandro


Answers

The answer to your questions is 224. I hope this helped! Good luck on anymore tests and questions.

Benjamin and Felix are 35 miles apart. At 3:00pm they start jogging towards each other. Benjamin jogs at a pace of 16 minutes per mile. Felix jogs at a pace of 10 minutes per mile. how many miles will Benjamin jog in 45 minutes

Answers

Using division operation, since Benjamin jogs at a pace of 16 minutes per mile, in 45 minutes he will jog 2.8 miles.

What is the division operation?

The division operation is one of the basic mathematical operations, including addition, subtraction, and multiplication.

The division operation involves dividing the dividend (the numerator) by the divisor (the denominator) to obtain the quotient (the result).

The distance between Benjamin and Felix = 35 miles

Benjamin's jogging pace or speed = 16 minutes per mile

Felix's jogging pace or speed = 10 minutes per mile

The number of miles that Benjamin can jog in 45 minutes = Time/Speed

= 2.8125 miles (45/16)

Thus, Benjamin will jog 2.8 miles in 45 minutes.

Learn more about distance, time, and speed at https://brainly.com/question/26046491

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Can someone please help me with this question? I’m so confused!

Answers

1/x^7

Step-by-step explanation:

To the 7th power is positive. It's the first one.

Hope this helps, have a good day!

it is A because X is unknown u can put 0 as a denominator so it 1 the X is still unknown and your exponents are 0

44x46 ayuda plssss speak spanish plssssss​

Answers

Answer:2024

Step-by-step explanation: 44x46

3x • 3y + 8 when x = 3, y = 2

Answers

Answer:

62

Step-by-step explanation:

Substitute x by 3 and y by 2

3*3*3*2+8=62

Kate has a coin collection. She keeps 7 of the coins in a box, which is only 5% of her entire collection. What is the total number of coins in Kate's coin collection?

Answers

Answer:

140

Step-by-step explanation:

7/.05 -140

Write an expression for "b divided by 6."

Answers


The expression is b/6


(5b + 16)
(b + 32)°
What is the value of b ?
b =

Answers

Answer:

b = -8

Step-by-step explanation:

To determine the value of b, we can use the factoring method. We can factor the expression

(5b + 16)(b + 32) as (b + 8)(5b + 16).

Setting each factor to 0, we get b + 8 = 0 and 5b + 16 = 0.

Solving for b in the first equation, we get b = -8.

Substituting this value into the second equation, we get 5(-8) + 16 = 0, which simplifies to -40 + 16 = 0.

This equation is true only when the value of b is -8. Therefore, the value of b is -8.

Write an equation in standard form of the line that passes through the point and has the
given slope.(-2, 4); m = -6
O None of the other answers are correct
Oy - 6x = 8
O 6x + y = -8
Oy - 6x = -8
O 6x - y = 8

Answers

Answer:

6x + y = -8

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

[tex]y = mx + b[/tex]

In which m is the slope and b is the y-intercept.

m = -6

So

[tex]y = -6x + b[/tex]

(-2, 4)

This means that when [tex]x = -2, y = 4[/tex]. We use this to find b.

[tex]y = -6x + b[/tex]

[tex]4 = -6(-2) + b[/tex]

[tex]b = 4 - 12 = -8[/tex]

So

[tex]y = -6x + -8[/tex]

[tex]6x + y = -8[/tex]

A study is conducted to determine the extent to which drinking alcohol impairs driving ability. Forty volunteers are each tested twice on a computer simulated driving course, once while sober and once while intoxicated. The tests took place over two days and the order of the treatments were randomly assigned to each volunteer. One of the variables measured is the response time (in seconds) to a certain stimuli. The mean difference in response times measured while intoxicated versus sober is 0.914 seconds with standard deviation 1.496 seconds. Specify the correct number from the list below that corresponds to the appropriate null and alternative hypotheses for this problem.

Answers

Answer: hello the list related to your question is missing hence i will give you a general answer that will enable to pick the correct option from the list you have.

answer :

The correct number from the list that corresponds to the null hypothesis will be a number ≥ P - value / critical value

The correct number form the list that corresponds to the alternate hypothesis will be a number ≤ P - value / critical value

Step-by-step explanation:

Determine the null and alternative hypothesis

Mean difference = 0.914

standard deviation = 1.496

duration of test = 2 days

n ( sample size ) = 40

assuming  99% confidence interval

critical value = 2.708 ( using excel function : TINV (0.01, 40 - 1 ) )

Given that the aim of the experiment is to determine the effect of alcohol on driving ability

H0 : μ : Impairs driving

Ha : μ : does not impair driving

Note :

when the P-value is  ≤ significance level we reject the Null hypothesis

while when the P-value is ≥ significance level we reject the alternate hypothesis

The correct number from the list that corresponds to the null hypothesis will be a number ≥ P - value / critical value

The correct number form the list that corresponds to the alternate hypothesis will be a number ≤ P - value / critical value

The product of all of the solutions of (4x + 2k)(2 -5x ) = 0 is (−15). Find k.

Answers

Answer:

k = 75

------------------------------

Given equation:

(4x + 2k)(2 - 5x) = 0

Its solutions are:

4x + 2k = 0 and 2 - 5x = 04x = - 2k and 2 = 5xx = - 0.5k and x = 0.4

The product of the solutions is -15:

- 0.5k * 0.4 = - 15- 0.2k = - 15k = - 15/- 0.2k = 75

Solve equation2/3*2/3*2/3*2/3=

Answers

Answer:

16/81

Step-by-step explanation:

Same as (2/3)^4

please help me ASAP!!! could someone help me do my geometry?

Answers

Answer:

9. m(YZ) = 102°

10. m(JKL) = 192°

11. m<GHF = 75°

Step-by-step explanation:

9. First, find the value of x

4x + 3 = 3x + 15 (inscribed angle that are subtended by the same arc are equal based on the inscribed angle theorem)

Collect like terms

4x - 3x = -3 + 15

x = 12

4x + 3 = ½(m(YZ)) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Plug in the value of x

4(12) + 3 = ½(m(YZ))

48 + 3 = ½(m(YZ))

51 = ½(m(YZ))

Multiply both sides by 2

51*2 = m(YZ)

102 = m(YZ)

m(YZ) = 102°

10. First, find the value of x.

7x + 5 + 6x + 6 = 180° (opposite angles in an inscribed quadrilateral are supplementary)

Add like terms

13x + 11 = 180

13x = 180 - 11

13x = 169

x = 169/13

x = 13

7x + 5 = ½(m(JKL)) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Plug in the value of x

7(13) + 5 = ½(m(JKL))

96 = ½(m(JKL))

Multiply both sides by 2

2*96 = m(JKL)

m(JKL) = 192°

11. First, find x.

5x + 15 = ½(11x + 18) (inscribed angle of a circle = ½ the measure of the intercepted arc)

Multiply both sides by 2

2(5x + 15) = 11x + 18

10x + 30 = 11x + 18

Collect like terms

10x - 11x = -30 + 18

-x = -12

Divide both sides by -1

x = 12

m<GHF = 5x + 15

Plug in the value of x

m<GHF = 5(12) + 15

m<GHF = 60 + 15

m<GHF = 75°

If point C is between points A and B, AB=43, AC= -12x -9, BC = 24x + , what is the value of X? please help

Answers

Answer:

equation: 43+(-12x-9)+24x=X

Step-by-step explanation:

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, the angle of depression to the boat is 19° 14'. When the boat stops, the angle of depression is 54° 12'. The lighthouse is 200 feet tall. How far did the boat travel from when it was first noticed until it stopped? Round to the nearest foot.

A. 474ft
B. 414 ft
C.452 ft
D.429 ft

Answers

Answer:

answer in link

Step-by-step explanation

alekscgi/x/Isl.exe

A company bought New Year's greeting cards to send to its valued customers. Sixty of the cards they sent cost $2.30 each. Thirty of the cards cost $2.75 each The remaining 34 cards cost $1.95 each. What was the total amount spent on these cards?​

Answers

Answer:

$287.82

Step-by-step explanation:

60 * 2.30 = 138

30 * 2.75 = 82.5

34 * 1.98 = 67.32

138 + 82.5 + 67.32 = 287.82

Find the slope of the line that passes through (4, 10) and (1, 11).

Answers

To find the slope of a line that passes through two points, you can use the formula:

slope = (y2 - y1) / (x2 - x1)

In this case, the two points are (4, 10) and (1, 11), so substituting these values into the formula gives:

slope = (11 - 10) / (1 - 4) = 1 / -3 = -1/3

So, the slope of the line that passes through (4, 10) and (1, 11) is -1/3.

Answer:

-1/3

Step-by-step explanation:

please help i dont know how to do this​

Answers

Answer:

1. a quantity that stands alone and is not changed by other quantities. most often x variable.

2. a quantity that changes depending on another quantity, as a result of the rule. most often the y variable

Step-by-step explanation:

Answer: A quantity that stands alone and is not changed by other quantities most often X variable.

A quantity that changes depending on another quantity, as a result of the rule most often Y variable.

The sum of three consecutive even numbers is 312. What is the value of the
smallest number?

Answers

Answer: 102

Step-by-step explanation:

Let the numbers be a, a+2 and a+4. Since the sum of three consecutive even numbers is 312, this will be:

a + a+2 + a+4 = 312

3a + 6 = 312

3a = 312 - 6

3a = 306

a= 306/3

a = 102

Therefore, the smallest number is 102.

Other numbers are 104 and 106.

Plzz help me well mark brainliest if you are correct!!..

Answers

Answer: 3/4

Explanation: if you don’t know what the fractions come out to the best way to figure it out is to divide to top number by the bottom number. I. This case 3/4 divides out into 0.75 which fits right in between the other numbers.

Answer:

I usually turn the fractions into a decimal. So it would turn into

.666 < x< .777

When you turn your answers into fractions, the only one that fits is C which is 3/4 or .75

Step-by-step explanation:

To plan for retirement, Deandre deposits $ 318 each quarter in an annuity that pays 7.6 %% interest, compounded quarterly. Payments will be made at the end of each quarter. Find the total value of the annuity in 27 years, Do not round any intermediate computations, and round your final answer to the nearest cent. If necessary, refer to the Bst of financial formalas

Answers

Answer: 1040

Step-by-step explanation:

just took 65 and mutiply 65$

What is the domain of f(x)=[1/2]*

Answers

Here we need to find the domain of the given function.

We will see that the domain is the set of all real numbers.

The first thing we need to do is to define the domain of a function.

For a given function f(x), we define the domain as the set of possible inputs that we can use on the function.

Usually, we start by defining the domain as the set of all real numbers and then remove from the domain the numbers that cause "a problem" with our function.

Where these "problems" are undefined operations, like the logarithm of a negative number or a zero in a denominator.

Particularly, in our function: f(x) = (1/2)^x

We do not have a denominator that can become zero nor a function that has problems with some given values of x (the exponent of a number can be any real number).

Concluding, because there is no problem with any real value,  we can see that the domain is the set of all real numbers

Learn more about domain  here: brainly.com/question/26098895

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How many solutions does the nonlinear system of equations graphed below
have?
A. Four
B. Two
C. Zero
D. One

Answers

It’s 4 bc of the way that the line is and how there is a circle

This line plot shows how many miles Monique rode her bike this week.​

Answers

Answer:

151

Step-by-step explanation:

Answer:

152 miles

Step-by-step explanation:

There are 2 Xs above 20 1/2, so she rode that distance twice. There are 3 Xs above 22 1/2, so she rode that distance three times. The other distances with Xs she only did once. We add up the distances for each X to get the total:

20.5 + 20.5 + 21.5 + 22 + 22.5 + 22.5 + 22.5 = 152 miles

(Pythagorean Theorem and the Coordinate Plane MC)
Determine the perimeter of the right triangle shown
O 10 units
O 24 units
O 36 units
O 64 units

Answers

Answer:

A

Step-by-step explanation:

refer the sketch for step by step answer

how do you know if there is an elephant in your fridge?

Answers

Answer:

you'll know bc your fridge will be broken

Step-by-step explanation:

Answer:

When there is footprints in the butter.

Step-by-step explanation:

find the eighth term of the sequence 1/3, -1, 3, -9, ..

Answers

Answer:

-729

Step-by-step explanation:

sequence is to multiply by -3 to get next term

Pls help! Step by step

Answers

Answer:

x = 55

Step-by-step explanation:

Since the sides of the shape are parallel, AngleC and AngleD will add up to 180° (see "parallel lines cut by a transversal" or maybe you have learned a big pile of parallelogram theorems)

Use this relationship to set up an equation.

2x + 20 + 50 = 180

combine like terms

2x + 70 = 180

subtract 70

2x = 110

divide by 2

x = 110/2

x = 55

x is 55

Answer:

The value of x is 55°

Step-by-step explanation:

GivienTwo adjacent angles of a parallelogram are (2x + 20)° and 50° respectively

Since we know that opposite angles of a parallelogram are equal

m∠C = m∠B = (2x + 20)°m∠D = m∠A = 50°

The sum of any two adjacent angles is supplementary. This means, ∠A + ∠B = 180°, ∠B + ∠C = 180°, ∠C + ∠D = 180°, and ∠D + ∠A = 180.

So,

∠C + ∠D = 180°

(2x + 20)° + 50° = 180°

2x + 70° = 180°

2x + 70° - 70° = 180° - 70°

2x = 110°

2x/2 = 110°

x = 55°

Thus, The value of x is 55°

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