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vekshin1
3 years ago
7

Simplify the expression 8x + 4(x -1)

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
6 0
8x+4x-4

12x-4 is the answer
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Translate each sentence into an equation. Then find each number.
PIT_PIT [208]

Answer:

10 - 3n = 31

n = -7

Step-by-step explanation:

10 - 3n = 31

-3n = 31 - 10

-3n = 21

n = 21/-3

5 0
2 years ago
The hypotenuse of a 45°-45°-90° triangle measures 7 StartRoot 2 EndRoot units.
Lerok [7]

Answer : Seven Units .

7 0
3 years ago
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The height of dachshunds is usually 1/3 their length. If Mollie is 20 inches long, how tall is she?
arlik [135]

This is a proportion problem.

Let's make her Length x and her height 1/3 x.

1/3 x = 20 inches

x = 6 2/3 inches

Molly's height is 6 2/3 inches.

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8 0
3 years ago
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the capacity of a school swimming pool is 243m cubed. An olympic pool is 50 m long, 25 m wide and 2 m deep, How much greater is
sveticcg [70]

Answer:

2257m3

Step-by-step explanation:

50x25x2=2500

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6 0
2 years ago
PLZ HELP
Alex

Answer:

The correct option is C ) 109.5°

Therefore,

m\angle E=109.5\°

Step-by-step explanation:

Given:

In Triangle DEF

d = 10

e = 18

f = 12

To Find

angle E = ?

Solution:

In Triangle DEF , Cosine Rule says

\cos E=\dfrac{f^{2}+d^{2}-e^{2}}{2fd}

Substituting the values we get

\cos E=\dfrac{12^{2}+10^{2}-18^{2}}{2\times 12\times 10}

\cos E=\dfrac{-80}{240}=-\dfrac{1}{3}

Therefore,

\angle E=\cos^{-1}(-0.3333)

m\angle E=109.5\°       ............As it is in Second Quadrant

Therefore,

m\angle E=109.5\°

4 0
3 years ago
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