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3 years ago

Drag the correct steps into order to solve the equation 5x+5=−10 for x steps plzz

2 answers:

6 0

Hey there! :D

So, the steps should look somewhat like this:

5x+5=-10

5x+5(-5)=-10(-5)

5x= -15

5x÷5= -15÷5

x=-3

I hope this helps!
~kaikers

sineoko [7]3 years ago

3 0

1. Subtract 5 from both sides

5x=10-5

2. Simplify 10-5=5

So 5x=5

3. Divide both sides by 5

X=1

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If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

frutty [35]

Answer:

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

Step-by-step explanation:

we are given

$sin(a)=\frac{4}{9}$

$sin(b)=\frac{2}{5}$

Firstly, we will draw triangle

we get

$cos(a)=\frac{\sqrt{65} }{9}$

$cos(b)=\frac{\sqrt{21} }{5}$

now, we can sue formula

$sin(a+b)=sin(a)cos(b)+cos(a)sin(b)$

now, we can plug values

$sin(a+b)=\frac{4}{9}\times \frac{\sqrt{21} }{5}+\frac{\sqrt{65} }{9}\times \frac{2}{5}$

now, we can simplify it

$sin(a+b)=\frac{4\sqrt{21}+2\sqrt{65}}{45}$

6 0

3 years ago

Find the measure of angle A

omeli [17]

Answer:

Step-by-step explanation:

A and B are along a straight line

(3x - 20) + 2x = 180

5x = 200

x = 40

3(40) - 20 = 100°

7 0

3 years ago

An electrician charges an hourly rate of $60, but also charges a fixed fee for making house calls regardless of time spend on th

Luba_88 [7]

Answer:

$50

Step-by-step explanation:

Step one:

charges per hour= $60

We are told that the electrician earned $350

for a job that took 5hours

The linear equation to represent his earnings is

let the flat fee be x

C=60t+x------------1

so for C=$350

Required

the flat fee

350=60(5)+x

350=300+x

collect like terms

x=350-300

x=50

Flat fee is $50

4 0

3 years ago

Read 2 more answers

3x<br> Are 10 - 20 and 5(2 - 20) equivalent expressions? Explain.

Nutka1998 [239]

Answer:

No.

Step-by-step explanation:

Take the second expression: 5(2 - 20)

To solve, you must distribute the 5 to all terms within the parenthesis:

5(2 - 20) = (5 * 2) - (5 * 20) = 10 - 100 = -90

On the other hand:

10 - 20 = -30

∴ the two expressions are not equivalent.

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3 years ago

Find the diameter of the circle with the given radius.<br> 3. 34 feet<br> 4. 19 meters

Charra [1.4K]

Answer:

3) answer 68 feet and 4) answer 38

Step-by-step explanation:

you just need to multiply by 2 easy itsn't it

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3 years ago