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3 years ago

Please help me find the value of x

Mathematics

2 answers:

Novay_Z [31]3 years ago

7 0

Set the equations to equal each other because the angles are equal.
8x - 63 = 4x - 27
+63 on both sides
8x = 4x + 36
-4x on both sides
4x = 36
/4 on both sides
x = 9

Answer:
x = 9

miskamm [114]3 years ago

7 0

Answer:

hhhhhhhhhhhhhhhhhhh

Step-by-step explanation:

x=9

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What’s this answer for algebra 2

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Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Write each phrase as an algebraic expression using the variable x

k0ka [10]

Answer:

1. 2x + 4

2. 7x

3. x - 3

4. 15/x

5. 27 - x

6. 10/2x

7. x/8

8. 6 - x

9. x < 11

10. 2(8 + x)

Step-by-step explanation:

1. "more" means addition and "twice a number" means multiplication

2. "product" means multiplication and "and" means addition

3. "less than" means subtraction

4. "divided" means division or /

5. "decreased" means subtraction

6. "divided" means division or / and twice a number means multiplication

7. "a number over" means "x divided by" or x/?"

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6 0

4 years ago

The area of a rectangular wall of a barn is 175 square ft.it’s length is 6feet longer than twice its width.find the length and w

Burka [1]

Answer:

$L =21.945$ --- Length

$W = 7.9725$ --- Width

Step-by-step explanation:

Given

Let

$L \to Length$

$W \to Width$

So:

$Area = 175$

$L = 6 + 2W$

Required

The dimension of the rectangle

The area is calculated as:

$Area =L*W$

This gives:

$175 =L*W$

Substitute: $L = 6 + 2W$

$175 =(6 + 2W)*W$

Open bracket

$175 =6W + 2W^2$

Rewrite as:

$2W^2+ 6W -175 = 0$

Using quadratic formula:

$W = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

This gives:

$W = \frac{-6 \± \sqrt{6^2 - 4*2*-175}}{2*2}$

$W = \frac{-6 \± \sqrt{1436}}{2*2}$

$W = \frac{-6 \± 37.89}{4}$

Split

$W = \frac{-6+ 37.89}{4}, W = \frac{-6- 37.89}{4}$

$W = \frac{31.89}{4}, W = \frac{-43.89}{4}$

The width cannot be negative;

So:

$W = \frac{31.89}{4}$

$W = 7.9725$

Recall that:

$L = 6 + 2W$

$L =6 + 2 * 7.9725$

$L =21.945$

5 0

3 years ago