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Luden [163]
3 years ago
7

NEED HELP PLZ DUE IN 20 AND CAN YOU SHOW WORK PLZ

Mathematics
1 answer:
slava [35]3 years ago
3 0

Answer:

59.) 80 smokers, 280 nonsmokers.

61.) 240 men, 200 women

Step-by-step explanation:

59.)

Start with:

\frac{2}{7}= \frac{x-100}{x+100}

Cross product.

2x+200=7x-700

Subtract 2x from both sides of the equation.

200=5x-700

Add 700 to both sides of the equation.

900=5x

Divide by 5

x=180

Substitute in your x-value.

(180)-100 = 80

(180)+100= 280

61.)

Start with:

6x+5x=440

Combine like terms.

11x=440

Divide by the coefficient of x, which is 11

x=40

Substitute.

6(40)=240

5(40)=200

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A person casts a shadow that aligns with a shadow of a tree. the person is 5.5 feet tall and casts a shadow 8.25 feet long. the
SOVA2 [1]

An equation that can be used to determine the tree's height is 22.5/8.25 = x/5.5.

The height of this tree is equal to 15 feet.

The distance of this person from the tree is equal to 14.25 feet.

<h3>What are the properties of similar triangles?</h3>

In Geometry, two (2) triangles are similar when the ratio of their corresponding sides are equal in magnitude and their corresponding angles are congruent.

Additionally, two (2) geometric figures are considered to be congruent only when their corresponding side lengths are congruent and the magnitude of their angles are congruent.

Now, we can write an equation that can be used to determine the tree's height. Since the ratio of the corresponding sides of similar triangles are equal in magnitude, we have the following mathematical expression (equation):

22.5/8.25 = x/5.5

Where:

x represents the height of the tree.

<h3>How tall is the tree?</h3>

22.5/8.25 = x/5.5

Cross-multiplying, we have:

8.25x = 22.5 × 5.5

8.25x = 123.75

x = 123.75/8.25

x = 15 feet.

<h3>How far is the person standing from the tree?</h3>

The distance of this person from the tree can be calculated as follows;

Distance = Length of tree's shadow - Length of person's shadow

Distance = 22.5 - 8.25

Distance = 14.25 feet.

Read more on corresponding side here: brainly.com/question/11920446

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7 0
1 year ago
50 pointss for whomever helps me on this. Please and thank you.
Alika [10]
There are parrelell line and congruent line in the part to get the answer u must figure ot the angles in each one.6 to 2=12 that the answer for number 1.i might dont have it right.people say im dum.at least i try.
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3 years ago
6. If four numbers are in proportion, then the terms equals the product of<br>​
snow_tiger [21]

Answer: If four numbers are proportional, a : b = c : d, then the product of the extremes is equal to the product of the means. ad = bc

3 0
2 years ago
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