3 years ago

1

Mathematics

1 answer:

Andrei [34K]3 years ago

6 0

C. complementary angles

Step-by-step explanation:

two angles are called complementary when their measures add to 90 degrees

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Annie walks 15 feet away from her house and places a mirror on the ground. She backs 4 feet away from the mirror so that she can

Firdavs [7]

Answer:

18.75 ft

Step-by-step explanation:

The given scenario can be drawn as shown in the following attachment.

Given that,

$m\angle DCE=\angle ACB$ and $m\angle DEC=\angle ABC=90^{\circ}$

Therefore, $\Delta ABC\sim \Delta DEC$

$\Rightarrow \dfrac{AB}{DE}=\dfrac{BC}{EC}$

$\Rightarrow \dfrac{AB}{5}=\dfrac{15}{4}$

$\Rightarrow AB=\dfrac{15\times 5}{4}=18.75$ ft

AB is the height of the house.

7 0

3 years ago

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Write an expression that is equivalent to 3/5 (3y+15)<br> 3/5y +9, 3/5y+15, 9/5y+9, 9/5y + 15?

NISA [10]

Given the expression

$\frac{3}{5} (3y+15)$

The expression that is equivalent to the given expression is given by:

$\frac{3}{5} (3y+15)= \frac{9}{5} y+ \frac{3}{5} (15)= \frac{9}{5} y+9$

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3 years ago

How do you find the fraction of 0.35

SOVA2 [1]

Answer:

$\frac{7}{20}$

Step-by-step explanation:

0.35 is the same as 35/100

which can be simplified to 7/20

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2 years ago

Simplify (11+4)x10+5

AURORKA [14]

Answer:

155

Step-by-step explanation:

= (15)x10+5

= 150+5

= 155

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3 years ago

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The nine cats in a pet store were weighed. Their weights (in pounds) are given below.

stepladder [879]

Range is 6 and the mode is 8

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3 years ago