Find the Product and Combine similar terms.
1. -1(7+4b) =
2. x(x²–2xy+y²) =
3. -5x(-3+x) =​

Answers

Answer 1
-1(7+4b) - distribute the -1 to the expression
(-1 * 7) + (-1 * 4b) — ( + and - = - )when it is multiplied
= -7 - 4b — there is no like term to added to subtracted so it will stay as like

x(x^2 - 2xy+y^2) distribute x to all
= x(x^2) - x(2xy) + x(y^2)
= x^3 - 2x^2y + xy^2 in multiplication exponent add to similar variable
No like term to connect

-5x(-3+x)
= -5x(-3) -5x(+x). (- and - is +)
= 15x -5x. similar variable x so connect the like connect like term by subtracting them
= 10x



Related Questions

Find the area of a regular quadrilateral that has a perimeter of 88V2
meters


Help please,

Answers

Depends upon what's the quadrilateral is

Solving according to square

Perimeter=4a

4a=88a=88/4=22

So

Area:-

22²=484units²

Find the area of the shaded shape. Write the area in square unit

Answers

Answer:

432 square feet

Step-by-step explanation:

Hello there.

Do you see those half shaded squares on the top? Those count as half a square.

Do 6 times 3 to get 24. Multiply 24 with 16 to get 384.

There are 6 half shaded squares which equals to 3 full squares. Multiply 3 and 16 to get 48. Lastly, add 384 with 48 to get your answer.

Hope this helped, Angelo

15. Roger, Luisa, Chin, and Wenona were playing a game. For each correct answer, a game plece could be moved ahead. The game pieces had been moved 2 dm, 15 cm, 75 mm, and 0.12 m. Roger's piece had moved 15 cm. Luisa's piece had moved farther than 75 mm. Chin's piece hadn't moved to 0.12 m. Wenona's piece had moved 2 dm. Order the students from first place to fourth place. To solve, convert all the measures to the same unit. HELP

Answers

Answer:

1. Wenonas piece: moved 20 cm

2. Rogers piece: 15cm

3. Luisas piece: <7.5cm

4. Chins piece: >12cm

this is the order, HOPE THIS HELPS!

helpppppppppppppppppppppp

Answers

Step-by-step explanation:

i) 0.0031 (or) 3.1×10^(-3)

ii) 0.0013 (or) 1.3×10^(-3)

I hope It helped you

BRAINLIEST+ STARS!!!

What is the volume of this cone? Use 3.14 for pi and round your answer to the
nearest tenth.
In your answer, give the volume of the cone rounded to the nearest tenth, and then
explain how you calculated it.

Answers

Answer:

I had two other people with the same question, so I'm gonna assume that the radius is 2 and the height is 8. Here is the answer: 39.5 in^3

Step-by-step explanation:

The formula for a cone is (pi)(r^2)(h/3)

Since we have to use 3.14 for pi, we plug 3.14 in for pi:

(3.14)(r^2)(h/3)

The radius is 2 and the height is 8, so we plug in those numbers:

(3.14)(2^2)(8/3)

Simplify:

(3.14)(4)(2.666...)

Multiply:

(12.56)(2.666...) -> 39.49333...

Finally, we round 39.49333... to the tenths place:

39.5

Hope this helps :)

5x^2-10x=9x+4

Solve the quadratic equation by factoring

Answers

Answer:

x = 4 or - 1/5

Step-by-step explanation:

If you need help or want to see work you can go to Tiger algebra.

Hope it helped!

Write a quadratic function with zeroes -8 and -6.
Write your answer using the variable x and in standard form with a leading coefficient of 1.
f(x) =

Answers

Answer:

see below

Step-by-step explanation:

zeroes =  -6 and  -8

y = (x+8)(x+6)   expand to

y = x^2 + 14x + 48

3. 64 chairs were arranged in equal rows. 56 students came to sit in the chairs. If the same number of students sat in each row, how many chairs could have been in each row? Explain your thinking​

Answers

If the number of the seats are vacant is 8. Then the number of chairs in a row will be 8.

What is division?

Division means the separation of something into different parts, sharing of something among different people, places, etc.

64 chairs were arranged in equal rows. 56 students came to sit in the chairs. If the same number of students sat in each row. Then the number of the chair in a row will be

Let the number of the row be x. Then we have

[tex]\rm \dfrac{64}{x} = 8\\\\\\x \ \ = 8[/tex]

Then the number of the row is 8.

More about the division link is given below.

https://brainly.com/question/369266

#SPJ1

10. How do personality differences relate to your community?
O A. Community activities are mainly for extroverts.
O B. Community activities are mainly for introverts.
C. Communities have needs that appeal to many different personality types.
O D. Communities only need one personality type.

Answers

C.Communities have needs that appeal to many different personality types
PLATO!!!

Answer:how can you easily improve your family relationships by understanding personality types

Step-by-step explanation:

What is the equation of the line that passes through the point (4,−2) and has an undefined slope?

Answers

Undefined Slopes

When a line has an undefined slope, it means that it is a vertical line. Vertical lines are written in the following form:

[tex]x=d[/tex], where d is the x-interceptThe x-intercept of a vertical line is the value of x when y=0

Solving the Question

For any vertical line, the x-coordinate is constant. This means that for any point that falls on the line, the x-coordinate will always be the same.

If we're given that the line passes through the point (4,-2), this means that the x-coordinate for every piont this line passes through is 4.

In other words, the x-intercept of this line is 4.

[tex]x=4[/tex]

Answer

[tex]x=4[/tex]

During a period of inflation, the graph of the consumer price index (CPI) will
fall.
A. True
B. False
SUBMIT

Answers

I think the answer would be B

Answer:

B. Fakse

explanation:

In

inflation

, the CPI will rise. In deflation, the CPI will fall

A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before
falling down to the ground.
1. Which of these graphs represent this situation? Explain how you know in 2-3 sentences
|A
B
C
2. What would be appropriate labels for your x-axis?
3. What would be appropriate labels for your y axis?
4. According to your graph, roughly when does the ball hit the ground?

Answers

Answer:

1. answer is B because it is the only graph that represents the time stuck in the tree at a certain time then the continuous fall of the ball after falling out of the tree. 2. X-axis would be time or seconds 3. Y-axis would be height in air 4. 14 seconds after it was rhrown

Answer:

its B

Step-by-step explanation:

Have you smiled today? its very important:)

On your vacation, you and your family go to a concert. The tickets cost $6 for adults and $2 for
children under 12. If 175 tickets were sold, totaling $750, how many adult tickets were sold?
How many children's tickets were sold?

Answers

Answer:
just divide 750 by 6 . And the answer is 125 tickets. 9
ust Step-by-step explanation:

A piece of wire 19 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle.
How much wire should be used for the square in order to minimize the total area?

Answers

Answer: 8.26 m

Step-by-step explanation:

[tex]$$Let s be the length of the wire used for the square. \\Let $t$ be the length of the wire used for the triangle. \\Let $A_{S}$ be the area of the square. \\Let ${A}_{T}}$ be the area of the triangle. \\One side of the square is $\frac{s}{4}$ \\Therefore,we know that,$$A_{S}=\left(\frac{s}{4}\right)^{2}=\frac{s^{2}}{16}$$[/tex]

[tex]$$The formula for the area of an equilateral triangle is, $A=\frac{\sqrt{3}}{4} a^{2}$ where $a$ is the length of one side,And one side of our triangle is $\frac{t}{3}$So,We know that,$$A_{T}=\frac{\sqrt{3}}{4}\left(\frac{t}{3}\right)^{2}$$We have to find the value of "s" such that,$\mathrm{s}+\mathrm{t}=19$ hence, $\mathrm{t}=19-\mathrm{s}$And$$A_{S}+A_{T}=A_{S+T}$$[/tex]

[tex]$$Therefore,$$\begin{aligned}&A_{T}=\frac{\sqrt{3}}{4}\left(\frac{(19-s)}{3}\right)^{2}=\frac{\sqrt{3}(19-s)^{2}}{36} \\&A_{T+S}=\frac{s^{2}}{16}+\frac{\sqrt{3}(19-s)^{2}}{36}\end{aligned}[/tex]

[tex]$$Differentiating the above equation with respect to s we get,$$A^{\prime}{ }_{T+S}=\frac{s}{8}-\frac{\sqrt{3}(19-s)}{18}$$Now we solve $A_{S+T}^{\prime}=0$$$\begin{aligned}&\Rightarrow \frac{s}{8}-\frac{\sqrt{3}(19-s)}{18}=0 \\&\Rightarrow \frac{s}{8}=\frac{\sqrt{3}(19-s)}{18}\end{aligned}$$Cross multiply,$$\begin{aligned}&18 s=8 \sqrt{3}(19-s) \\&18 s=152 \sqrt{3}-8 \sqrt{3} s \\&(18+8 \sqrt{3}) s=152 \sqrt{3} \\&s=\frac{152 \sqrt{3}}{(18+8 \sqrt{3})} \approx 8.26\end{aligned}$$[/tex]

[tex]$$The domain of $s$ is $[0,19]$.So the endpoints are 0 and 19$$\begin{aligned}&A_{T+S}(0)=\frac{0^{2}}{16}+\frac{\sqrt{3}(19-0)^{2}}{36} \approx 17.36 \\&A_{T+S}(8.26)=\frac{8.26^{2}}{16}+\frac{\sqrt{3}(19-8.26)^{2}}{36} \approx 9.81 \\&A_{T+S}(19)=\frac{19^{2}}{16}+\frac{\sqrt{3}(19-19)^{2}}{36}=22.56\end{aligned}$$[/tex]

[tex]$$Therefore, for the minimum area, $8.26 \mathrm{~m}$ should be used for the square[/tex]

When designing a training plan, what do you need to think about?
A. Frequency, rest, progression
B. Moderation, progression and overtraining
C. Rest, goals, overload
D. Frequency, overtraining, time

Answers

Answer:

B

Step-by-step explanation

U need to keep up with your training and work hard

6. A gas tank holds 450 gal. when it is filled to the height of 12 ft. How many
gallons will it hold when it is filled to 5 ft.?

Answers

Answer:

[tex]\huge\boxed{\sf 187.5\ gal.}[/tex]

Step-by-step explanation:

Given that:

For,

12 ft. height, gas tank can hold 450 gal.

Using unitary method:

12 ft = 450 gal.

Divide 12 to both sides

1 ft = 450/12 gal.

1 ft = 37.5 gal.

Multiply 5 to both sides

5 ft. = 37.5 × 5 gal.

5 ft. = 187.5 gal.

So, the height of 5 ft. holds 187.5 gal.

[tex]\rule[225]{225}{2}[/tex]

Answer:

187.5 gal

Step-by-step explanation:

A=lw

450=12(w)

450/12=37.5ft

A=lw

A=37.5(5)

A=187.5 gal

Hope that helps

The value of x in this system of equations is 1.
3x + y = 9
y = -4x + 10
Substitute the value of y in the first equation:
Combine like terms:
Apply the subtraction property of equality:
Apply the division property of equality:
3x + (-4x + 10) = 9
-X + 10 = 9
X
What is the value of y?

Answers

Answer:

y = 6

Step-by-step explanation:

y = -4(1) + 10 = -4 + 10 = 6

Find all values of k for which the equation 3x2−4x+k=0 has no solutions.
This should be an inequality.

Answers

Answer:

k>4/3

Step-by-step explanation:

The given quadratic equation is:

3x^2 - 4x + k = 0

To find, the value of k = ?

you use

Discriminant, D =  - 4ac

=  - 4(3)(k)

= 16 - 12k

The condition of no solutions.

D < 0

16 - 12k < 0

16<12k

4/3<k

⇒ k>4/3

Two angles of a quadrilateral measure 60° and 160°. The other two angles are in a ratio of 3:11. What are the measures of those two angles?

Answers

Answer:

30  and 110 degrees

Step-by-step explanation:

The angles sum to 360 degrees

  you have   60 + 160 = 220    leaving   140 more in a ratio  3:11

     one is   3 / (3+11) = 3/14      3/14 * 140 = 30    the other is 110

The area of a square is defined by, A(X) = x2 - 6x + 9. What is the length of a side of the square?
1- I-3
2- I +3
3- 2-9
3- x - 6

Answers

Answer:

Step-by-step explanation:

None of the answers look right to me unless you are given something I'm not aware of.

A(x) can be factored. When it is, the following is what is obtained.

A(x) = (x- 3)(x - 3)

Since the area of a square is

Area = s^2

where s is the length of the side, you can find the square root by using the rules of roots.

s^2 = (x - 3)(x - 3)

√s²= √(x - 3)²

√s² = s

√(x - 3)² = x - 3

Therefore the answer should be s = x-3

The only thing I think you can do is ask whoever is presenting the course how any of those answers are obtained.

Answer:

x-3

Step-by-step explanation:

thats what the guy above me's answer is to make it easier

The diameter of a circle is 222 units.
What is the radius of the circle?
units

Answers

Answer:

111

Step-by-step explanation:

divide by 2 to find the radius

(1/4)^3z-1=16^z+2x 64^z-2

Answers

Answer:

Step-by-step explanation:

All of the following are examples of attempts to offset carbon emissions EXCEPT...
A. Kyoto Protocol
B. Freedom in Industry
C. Nuclear energy
D. Sun, Wind, and Tidal energy

Answers

Answer:

B. Freedom in Industry

Step-by-step explanation:

The Kyoto Protocol is a commitment between countries to limit the amount of greenhouse gases produced. Nuclear, Sun, Wind, and Tidal energy are all renewable energy sources.

what is the surface area of this cylinder ?

Answers

Answer:

87.92 mm²

Step-by-step explanation:

Given:

Radius of circular base: 2 millimetersHeight of cylinder: 5 millimeters

It should be noted:

Surface area of cylinder: 2πrh + 2πr²       (R = Radius; H = Height)

When the measures are substituted, we get the following expression:

⇒ 2π(2)(5) + 2π(2)²

Multiply the constants and substitute π as 3.14.

⇒ 20π + 2π(4)⇒ 20π + 8π⇒ 20(3.14) + 8(3.14)

Finally, simplify the expression to determine the surface area.

⇒ 20(3.14) + 8(3.14)⇒ 62.8 + 25.12⇒ 87.92 mm²

Answer:

88.0 mm² (nearest tenth)

Step-by-step explanation:

Surface area of a cylinder = [tex]2\pi r^2+2\pi rh[/tex]

where:

r = radiush = height

Given:

r = 2 mmh = 5 mm

Substitute given values into the formula:

[tex]\begin{aligned}\sf \implies SA & =2\pi (2)^2+2\pi (2)(5)\\ & = 8 \pi+20 \pi\\ & = 28 \pi\\ & = 88.0\:\sf mm^2\:(nearest\:tenth)\end{aligned}[/tex]

Write the decimals in expanded notation 0.685

Answers

given:

[tex]0.685[/tex]

to find:

the expanded notation form.

solution:

[tex]0[/tex]

[tex] + 0.6[/tex]

[tex] + 0.08[/tex]

[tex] + 0.005[/tex]

it can be written as a sentence also,

0 + 0.6 + 0.08 + 0.005

I need help

In y = 2^x + 1, what is the exponent?

Answers

Step-by-step explanation:

The natural log has a base of 'e'. That is the definition of the natural log. Therefore, using logarithm rules, 'e' to the power of the right side equals 'y':

[tex] {e}^{ {2}^{x} + 1 } = y[/tex]

Answer:

x

Step-by-step explanation:

In this problem, x is the exponent as the term '2' is multiplied by itself x times. If you look a bit further, you will see there is also an invisible power on 1, but 1 raised to any exponent will be 1 itself so it isn't considered.

Weekly wages at a certain factory are
normally distributed with a mean of
of
$400 and a standard deviation of $50.
Find the probability that a worker
selected at random makesbetween
$400 and $450.
[? ]%

Answers

Answer:

The probability that a worker makes between $400 and $450 is .3413 using the calculator and .34 using the empirical rule.

Step-by-step explanation:

There are two ways to approach this problem.

The first way is to find the z-score corresponding to $400 and $450 weekly wage and find the p-value in between these values.

[tex]\displaystyle \frac{400-400}{50} < z < \frac{450-400}{50}[/tex][tex]\displaystyle 0 < z < 1[/tex]

If you use the normalcdf function on your calculator and put 0 and 1 as the lower and upper bounds, respectively, you will get an area of .3413.

Another way of looking at this problem is to recognize that the weekly wages given are the mean and one standard deviation above the mean.

We can use the Empirical Rule, 68-95-99.7, in order to see that going one standard deviation above the mean would be an area of 68/2 = .34.

I've attached an image that shows you what the normal curve looks like.

PLS HELPP Find the value of x.





7



10



6



3

Answers

Answer:

10

Step-by-step explanation:

An energy bar company manufactures peanut butter and chocolate bars.

Peanut butter bars cost 25¢ per lb.
The chocolate bars cost 30¢ per lb.
The company sold 260 lbs of bars for $71.
How many of the bars sold were peanut butter?

Answers

Answer:

sold 120 chocolate bars

sold 140 peanut butter bars

Step-by-step explanation:

x = peanut butter bars

y = chocolate bars

x + y = 260, total lbs

0.25x + 0.30y = 71, money

solve double variable equation

multiply -4 on both sides for 2nd equation

-x + -1.2y = -284

add both equations together

-0.2y = -24

y = 120

x = 260 - 120

x = 140

sold 120 chocolate bars

sold 140 peanut butter bars

Help Me On This!!

[tex] \: \: \: \: [/tex]

Answers

volume: 200 m³surface area: 220 m²

The above diagram shows a rectangular prism

Formula's:

Volume: Length x Width x Height

Surface area: 2(Length x Width + Height x Width + Height x Length)

Solve for Volume:

5 x 10 x 4

200 m³

Solve for surface area:

2(10x 5 + 4 x 5 + 4 x 10)

2(50 + 20 + 40)

2(110)

220 m²

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