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3 years ago

Please help with geometry homework will make brainliest

Mathematics

1 answer:

o-na [289]3 years ago

4 0

Answer

Explanation

The two lines in the diagram are secants meeting outside the circle.

The products of a secant and the extension of the chord of one line is equal to the products of a secant and the extension of the chord of the other line.

∴ 4 × 9 = x × 12

36 = 12x

x = 36/12

= 3

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An escalator from the ground floor to the second floor of a department store is 110 ft long and 32 ft vertical. What is the esca

grigory [225]

Answer: 16.91°

Step-by-step explanation:

1. You can draw a right triangle as you can see in the figure attached.

2. Then you can calculate the angle of elevation (α) as following:

$\alpha=arcsin(\frac{opposite}{hypotenuse})$

Where:

$opposite=32\\hypotenuse=110$

3. Now you must substitute these values. Then, the angle of elevation is:

$\alpha=arcsin(\frac{32}{110})$

$\alpha=16.91\°$

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4 years ago

A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice. A. How much sparkling w

cluponka [151]

Answer: We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

Step-by-step explanation:

Given: A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice.

Since, for recipe of sparkling grape juice , they should be used in same proportion.

Let x be the amount of sparkling water need to mix with 9 quarts of grape juice, then

$\frac{x}{9}=\frac{1.5}{0.75}\\\Rightarrow\ x=\frac{1.5\times9}{0.75}\\\Rightarrow\ x=18$

We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

Let y be the amount of grape juice need to mix with 3.75 quarts of sparkling water, then

$\frac{3.75}{y}=\frac{1.5}{0.75}\\\Rightarrow\ y=\frac{3.75\times0.75}{1.5}\\\Rightarrow\ y=1.875$

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

4 0

3 years ago

What is |-8| + |6| ?

Irina18 [472]

|-8| + |6| should be 14

5 0

3 years ago

Read 2 more answers

F(x) = 7|x| awnser the question for some points

Eddi Din [679]

f(x) = 7|x|

if x= 1

then f(x) = 7

5 0

3 years ago

Read 2 more answers

A:4x+4=108 B:4x+4=90 C:108+4×+4=180 D:180=90+4×+4 E:×+108=108

Citrus2011 [14]

Answer:

C:108+4x+4=180

Step-by-step explanation:

The angles are supplementary so they sum up to 180

3 0

3 years ago