-21 - 8a = -5(a +6)
Step by step if possible

Answers

Answer 1

Answer:

Step-by-step explanation:

First multiply the -5 to (a+6)

The equation will look like this

-21 - 8a = -5a -30

then move the numbers around where you have a value times on one side, and a normal value on the other

add -5a to -8a, and add -21 to -30

the equation should look like this:

-13a = -51

then you need to get the a by itself, so divide -13 by -51

a= 13/51 (as a fraction with 13 on top)

Answer 2
Answer:

a = 3

Step-by-step explanation:

-21 - 8a = -5(a + 6)

-21 - 8a = -5a - 30

8a + (-5a) = 30 - 21

3a = 9

a = 9/3

a = 3


Related Questions

The question is "the numbers 4 and 9 both have the exactly three factors, Find two numbers more that have the exactly three factors"

Answers

Answer: 25 and 49

Explanation:

25: 1,5,25
49: 1,7,49

Use algebraic notation to describe how to transform the blue function into the red function. F\left(x\right)-1f(x)−1 f\left(x-1\right)f(x−1) f\left(x+1\right)f(x+1) f\left(x\right)+1f(x)+1

Answers

In geometry, transformations are used to move a point or points from one position to another. The notation that describes how the blue function is transformed into the red function is -f(x)

I have attached the graph of both functions.

From the attached graph, we can see that the blue function is reflected over the x-axis to produce the red function.

Let:

[tex]f(x) \to[/tex] Blue

[tex]g(x) \to[/tex] Red

The transformation of reflection across the x-axis is:

[tex]g(x) = -f(x)[/tex]

Hence, the notation that describes how the blue function is transformed into the red function is -f(x)

Read more about function transformation at:

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six boys went on a camping trip . their equipment weight was138 kg if the equipment was divided equally in weight how much did each boy carry

Answers

Answer:

138 kg / 6 = 23 kg per boy

PERSEVERE The figure shows a floor plan for a two-room apartment. Write an expression for the area of the apartment, in square feet, by first
finding the area of each room and then adding. Then describe how you can write the expression in a different way.
10 ft
8 ft
18 ft
Select Choice x18 + 8x Select Choice
You can also find the length of each side of the apartment, 18 and 10+ 8. and then
Select Choice
Select Choice

Answers

Answer:

10×18+8×18; You can also find the length of each side of the apartment, 18 and  10+8,  and then multiply 18(10+8)

Step-by-step explanation

The total area Room₁ and Room₂ = (A₁ + A₂) sq feet

                                                          = (180 + 144) sq feet

                                                          = 324 Sq feet.

In the given question

Length of the first room (l₁) = 18 feet

Width of the first room(w₁) = 10 feet

We know area of a rectangle is product of it's length and width.

Area of the first room A₁ = (l₁ × w₁) sq feet

                                       A₁ = (18 × 10) sq feet

                                       A₁ = 180 sq feet.

Length of the second room (l₂) = 18 feet

Width of the second room (w₂) = 8 feet

Area of the second room A₂ = (l₂ × w₂) sq feet

                                             A₂ = (18 × 8) sq feet

                                             A₂ = 144 sq feet.

∴The total area Room₁ and Room₂ = (A₁ + A₂) sq feet

                                                          = (180 + 144) sq feet

                                                          = 324 Sq feet.

Another way of finding the total area of the two rooms as we can see from the given figure both two rooms together form a square as the sides of the given sides which are 18 feet and (10 + 8) feet which is also 18 feet.

So, It is a square.

Area of a square = (side)²                        (area of a square is product of            

                                                                                     two adjacent sides)

Area = (18)² sq feet

        = 324 sq feet.

Learn more about Area of a Square/Rectangle here :

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Which of the following is false? Explain. A. No integer is an irrational number. B. Every integer is a rational number. C. Every integer is a whole number.

Answers

Answer:

C.

Step-by-step explanation:

integer is a positive and negative number. integer is not a whole number because negative is not part of the whole number.

3(4x^2y^3 + 2x^3) – 4(9x^3y^2 – 6x^2y^3)
How to solve pls?

Answers

Answer:

[tex]3(4 {x}^{2} {y}^{3} + 2 {x}^{3}) - 4(9 {x}^{3} {y}^{2} - 6 {x}^{2} {y}^{3} ) \\ = (12 {x}^{2} {y}^{3} + 6 {x}^{3} ) - (36{x}^{3} {y}^{2} - 24{x}^{2} {y}^{3}) \\ = (12 {x}^{2} {y}^{3} + 6 {x}^{3} ) + ( - 36{x}^{3} {y}^{2} + 24{x}^{2} {y}^{3}) \\ = - 36{x}^{3} {y}^{2} + 36x^{2} {y}^{3} + 6 {x}^{3} [/tex]

I hope I helped you^_^

HELP ILL GIVE BRAINLIEST!!

Answers

Answer:

What can I help you with

Answer:

Step-by-step explanation:

The decimal equivalent of is 3/4 is...

.30

.75

.80

.90

none of these

Answers

Answer:

0.75

Step-by-step explanation:

since it's a fraction you can divide

3 divided by 4 is 0.75

Given f(x) = 3x – 1, solve for x when f(x) = -7.

Answers

Answer:

x = -2

Step-by-step explanation:

Given f(x) = 3x – 1

f(x) = -7

3x-1 = -7

3x = -7+1

3x = -6

x = -2

Answer:

x = -22

Step-by-step explanation:

given:

[tex]f(x) = 3x - 1[/tex]

solve for x, when:

[tex]f(x) = -7[/tex]

replace x with -7

~~~~~~~~~~~~

➡️ [tex] x = 3(-7) - 1 [/tex]

➡️ [tex] x = -21 - 1 [/tex]

➡️ [tex]x = -22 [/tex]

What are you been up to?
Anyway Welcome to my question.
After 2 days.

Math question is here. will you solve it. let's see.
the questions like a teacher. I mean like a topper. let's Solve doubt for each other a d help each other.

increase your followers two times. if your answer is correct.

only if your answer is correct. Get two follower to your account​

Answers

Answer:

If a box hold 24 things, let represent the box as x.

Therefore x=24

How many boxes are needed to hold 744 tins::

more than x boxes is to 744.

Step-by-step explanation:

If a box(1) = 24

then how many boxes (x) will =744

1 : 24

x : 744

24x = 744

24 24

x = 31

Therefore 31 boxes will be needed.

7 is the bracket from the quotient of 48 divided by the sum of 5 and difference of 11 and 8​

Answers

6 is supposed to be the bracket

X^2 = 14
I need help answer asap​

Answers

Answer:

x = ±sqrt(14)

Step-by-step explanation:

x^2 = 14

Take the square root of each side

sqrt(x^2) = ±sqrt(14)

x = ±sqrt(14)

x1 = -square root of 14, x2 = square root of 14

helppppppppppppppppppppppppppppppppppppppppppPp

Answers

Answer:

Step-by-step explanation:

4) You just have to find the lcm of the denominators

a) lcm(4,3,6)=4*3=12

[tex]\dfrac{3}{4} x-\dfrac{2}{3} =\dfrac{1}{6}x\\\\12*(\dfrac{3}{4} x-\dfrac{2}{3}) =12*(\dfrac{1}{6}x)\\\\12*\dfrac{3}{4} x-12*\dfrac{2}{3} =12*\dfrac{1}{6}x\\\\9*x-8 =2*x\\\\9*x-2*x =8\\\\7*x=8\\\\x=\dfrac{8}{7} \\[/tex]

b) I don't know the name of the property but it is :

"We can multiply the two members of an equality by the same non-zero number, we obtain an equality. "

5)

[tex]-6x+10+8x=12-4x\\\\(-6x+10)+8x=12-4x\\\\8x+(-6x+10)=12-4x\\\\8x-6x+10=12-4x\\\\2x+10=12-4x\\....[/tex]

Need help pls I will give you 20 more points ASAP

Answers

Step-by-step explanation:

RF (green) = 34/(12+14+34) = 34/60 = 0.57

[tex]\\ \sf\longmapsto RElative\:Frequency(Green)[/tex]

[tex]\\ \sf\longmapsto RF(Green)=\dfrac{34}{12+14+34}[/tex]

[tex]\\ \sf\longmapsto RF(Green)=\dfrac{34}{60}[/tex]

[tex]\\ \sf\longmapsto RF(Green)=\dfrac{17}{30}=0.57[/tex]

Jamie needs 1/5 meter of ribbon to decorate the border of a photo frame. Enter the number of photo frames that can be decorated using 4/5 meter of ribbon​

Answers

Answer:

4 photo frames

Step-by-step explanation:

Hope it will help you

it's 4 pieces of ribbon .

hope it's help you.........!!!!!!!!!!!!!!!!!!!

#rishu

I need help with my homework pls somone help….

Answers

Answer:

x > 9

Step-by-step explanation:

since the dot is open there won't be a line under

in September the digits of the code number are prime factor of 375 what is the code number for the office door in September ​

Answers

Answer:

There are 3 prime factors for 375 (1,3,5)

Step-by-step explanation:

Prime factors are prime numbers meaning they can't be further divided by a whole number.

PLEASE HELP Which values of a and b that make the following equation correct?

[tex](2^{a} *3^{2b})^{5} =6^{20}[/tex]

Answers

[tex]\\ \sf\longmapsto (2^a\times 3^{2b})^5=6^{20}[/tex]

[tex]\\ \sf\longmapsto 2^{5a}\times 3^{10b}=(2\times 3)^{20}[/tex]

[tex]\\ \sf\longmapsto 2^{5a}\times 3^{10b}=2^{20}\times 3^{20}[/tex]

On comparing

[tex]\\ \sf\longmapsto 5a=20[/tex]

[tex]\\ \sf\longmapsto a=\dfrac{20}{5}=4[/tex]

And

[tex]\\ \sf\longmapsto 10b=20[/tex]

[tex]\\ \sf\longmapsto b=\dfrac{20}{10}=2[/tex]

Andre wants to make a scaled copy of Jada's drawing so the side that corresponds to 4 units in Jada’s polygon is 8 units in his scaled copy.

Answers

Scaled drawing shows representation of the correct sizes of the original object either being reduced or enlarged by a given amount

The correct response to Andre is that each length of the sides of Jada's drawing should be multiplied by two to make a scaled copy of the drawing

The reason the response is correct is as follows:

Question: The parts of the question that appear missing is as follows;

1. Andre makes the statement, in order to obtain the scaled copy, should he add 4 units to each of the dimensions of the sides of Jada's drawing

The question is, what should be the response to Andre

The response is as follows:

When making a scale drawing, it should be noted that the original drawing and the scaled copy of the drawing are to be similar figures. That is the ratio of their corresponding sides should be constant

The ratio of the corresponding sides of the scale drawing Andre wants to make is 8 units/(4 units) = 2 : 1

Therefore, the correct response is Andre should multiply each of the lengths of the sides of Jada's drawing by two to make a scaled drawing as follows

[tex]\begin{array}{|c|c|c|}\mathbf{Length \ on \ Jada's \ drawing}& \mathbf{Length \times 2 =} &\mathbf{Length \ of \ Andre's \ scaled \ copy}\\&&\\12& 12\times 2 =&24\\10& 10\times 2 =&20\\7& 7\times 2 =&14\\6& 6\times 2 =&12\\5& 5\times 2 =&10\\4& 4\times 2 =&8\end{array}\right][/tex]

The lengths of Andre's scaled copy are 8 units, 10 units, 12 units, 14 units, 20 units, and 24 units

Please find attached the required scaled drawing

Learn more about scaled drawing here:

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The function g is defined by the following rule.
g(x) = 4x-3
Complete the function table.
FASTEST WILL BE MARKED BRAINLIEST

Answers

Plug each x-value into 4x-3.
x=-4: 4(-4)-3 = -16 -3 = -19
x=-2: 4(-2)-3 = -8 - 3 = -11
x=1: 4(1)-3 = 4 -3   = 1

pls answer with an explanation

Answers

This is all. Please do revisions on Pythagoras thoerem and try to understand the nature of question.

Gwen is attending a school orchestra concert. She sees her math teacher seated 3 meters ahead of her and her science teacher seated 4 meters to her right. How far apart are the two teachers?

Answers

5 metres, using Pythagorean triples as one is infront one is to the right meaning the distance betweent them would create a triangle so u can calculate it to be 5

A farmer sells 7.2 kilograms of pears and apples at the farmer's market.
3 4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?

Answers

Answer:

3.8 kg of apples were sold by the farmer.

Step-by-step explanation:

Given-

Kilograms of pears: 3.4 kgs

Kilograms of apples: ?

Total: 7.2 kgs

Therefore:-

Kgs of apples + Kgs of pears = Total Kgs of fruits sold. (Given)

Kgs of apples + 3.4 kgs = 7.2 kgs (Substituting given values)

Kgs of apples = 7.2 kgs - 3.4 kgs (Taking known values to one side)

Kgs of apples= 3.8 kgs.

Please help will give brainliest

Answers

Answer:

The mean means there are as many points below as above the mean point. Adding pairs of points to the left and right of the mean does not change the mean since the count on the left and right change at the same rate.

Step-by-step explanation:

how to do (-5+20) / 5 (-2) / is divide

Answers

Answer:

hope this helps you

have a great day

Answer:

-6

Step-by-step explanation:

(/) is divide right?

[tex]( - 5 + 20) \div 5( - 2)[/tex]

[tex] - 5 + 20 = 20 - 5 = 15[/tex]

[tex]15 \div 5 \times ( - 2)[/tex]

[tex] - (15 \div 5 \times 2) = - (30 \div 5) [/tex]

[tex] = - 6[/tex]

how fo I do this? please, need help​

Answers

Answer:

Round off to the two decimal places then plot on your Cartesian Plane

can someone please help me?

Answers

12 is the answer to this quest

6 - ((-8)÷4)+1 what is the answer??

Answers

Answer:

5

Step-by-step explanation:

6-(-8÷4)+1

6--2+1

6--1

5

Simplify 7H + 2(R + 3) – 2H

Answers

Answer:

5H + 2R + 6

Step-by-step explanation:

7H + 2(R + 3) – 2H

7H + 2R + 6 - 2H

(7H - 2H) + (2R) + (6)

5H + 2R + 6

find the cost of operation of a central air conditioner that uses 3.5 kilowatts and runs for 12 hours a day for one week at a cost of 9.53¢ per kilowatt-hour.

Answers

Answer:2.561,664¢ or roughly 25.61$.

Step-by-step explanation:

So, the air conditioner will cost 3.5 * 9.53 ¢ = 30.496 ¢ per hour running.

That means 30.496¢ * 12 = 365.952¢ or ≈3.65$ for a day.

Or 365.95¢ * 7 = 2.561,664¢ or ≈25.61$ for a week.

I'm vietanh and have fun studying!

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