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3 years ago

Find the value of x. X =

Mathematics

1 answer:

Paladinen [302]3 years ago

6 0

Answer:

X = 20

Step-by-step explanation:

when you have an angle that looks like an X shape the angles opposite each other are always equal. knowing this we now know that angle 5x must equal 100

so just make X the subject of the formula and solve, like shown bellow

$5x = 100$

$x = 100 \div 5$

$x = 20$

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3 years ago

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6.) The average delivery charge for a refrigerator is $54. The standard deviation is 53. Find the

Dima020 [189]

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I need the answers to 5&6 explain how you found the answer and I'll give brainliest

ch4aika [34]

I found the answer to 5, but I couldn't see the rest of worksheet to solve 6 thoroughly.

Both of these problems can be solved through substitution using the variables that you know equal a number.

For example #5: 5(3)(3)-7(3)+4
45-21= 24, and 24+8=28

That is how you solve number 5 and can also solve 6 the same way using the same method.

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3 years ago

I need help with this stuff and i need the answers step by step thank you!!

abruzzese [7]

Answer:

2. A

3. C

4. B

Step-by-step explanation:

2. To answer # 2, just add all the sides together...

(5x-7) + (3x-4) + (2x-6)

= 10x - 17

3. To answer # 3, divide/mulitply both the numerators and denominators by the same number and check to see if that answer matches the displayed answer...

a) 28 divided by 7 is 4, so divide the whole fraction by 7 to see if the fraction is proportional...

28/7 = 4

49/7 = 7

$\frac{4}{7} =\frac{4}{7}$

b) 4 goes into 16 4 times so multiply $\frac{4}{7}$ by 4...

4 x 4 = 16

7 x 4 = 28

$\frac{16}{28}$ = $\frac{16}{28}$

c) 4 goes into 16 4 times so multiply the whole fraction by 4...

4 x 4 = 16

7 x 4 = 28

$\frac{16}{28}$ ≠ $\frac{16}{35}$

d) 4 goes into 20 5 times to multiply the whole fraction by 5...

4 x 5 = 20

7 x 5 = 35

$\frac{20}{35} = \frac{20}{35}$

C is the answer because the fractions are not proportional.

4) 25% is a quarter of 100%. A third of 100% is 75%.

$120 - 0.25($120) = $90

Another expression for the for sale price is...

B) 0.75($120) = $90

7 0

3 years ago

Is the fraction 4/7 = 8/12?

qaws [65]

4/7 is not equal to 8/12. It is not equal because if you 4x2= 8 is equal but if you do 7x?= 12 it would be a decimal and you need equal numbers to make it a equivalent fraction. If it was 4/7= 8/14 that would be equivalent.

Hope I helped! : -)

5 0

3 years ago