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2 years ago

7

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in. To the nearest tenth of a percent, wha

t is the percent error in Annie's estimate? Enter your answer in the box.

1 answer:

Mila [183]2 years ago

5 0

The error is about 3.5%

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Solve 24x ⋅ 321-x = 8x+2

KengaRu [80]

Answer:

$x=2/7695$

≡ Small number, yes, but the steps explain why x is equal to this.

Step-by-step explanation:

simplify

$24x\cdot 321-x=8x+2\\\left(24\cdot 321\right)x-x=8x+2\\7703x=8x+2$

group

$7703x=8x+2\\7703x-8x=8~x+2-8x\\7695x=8x+2-8x\\7695x=8x-8x+2\\7695x=2$

isolate

$7695x=2\\\frac{7695x}{7695}=\frac{2}{7695}\\x=\frac{2}{7695}$

The fraction is in its simplest form, so that is the final answer.

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2 years ago

X= -1,0,2,2. y=10,15,28,49

Feliz [49]

What's the question you're asking

4 0

3 years ago

What can you conclude from the information in the diagram

mezya [45]

Answer:

go to the doctor

Step-by-step explanation:

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2 years ago

Read 2 more answers

Solve for x, and angle c

patriot [66]

9514 1404 393

Answer:

x = 12.75

∠C = 51.75°

Step-by-step explanation:

The two marked angles are complementary, so ...

(5x -12) +(3x) = 90

8x = 102

x = 102/8

x = 12.75

__

C = (5x -12)° = (5(12.75) -12)°

∠C = 51.75°

__

<em>Check</em>

E = 3x = 38.25, then C+E = 51.75 +38.25 = 90 . . . . as it should

5 0

2 years ago

Solve each system of equation for 3y+x=3 and -2y+5x=15

madam [21]

Answer:

<em>x = 3 and y = 0</em>

Step-by-step explanation:

3y+x=3

-2y+5x=15

Isolate y in 3y + x = 3 :

$y=$ $\frac{3-x}{3}$

Substitute $y = \frac{3-x}{3}$ in -2y + 5x = 15 :

$-2 * \frac{3-x}{3} + 5x = 15$

Simplify the equation :

$\frac{-6+17x}{3} =15$

Isolate x in $\frac{-6 + 17x}{3} = 15$ :

Proving x = 3

Isolate y in $y = \frac{3-3}{3}$ :

Proving y = 0

Your solved system of equations are x being 3, and y being 0.

6 0

2 years ago