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3 years ago

Solve by elimination { -3x - 10y = -4 { x - 5y = 18

Mathematics

1 answer:

mylen [45]3 years ago

5 0

{-3x - 10y = -4} Answer: x = − 10/3y + 4/3

{x - 5y = 18} Answer: x = 5y + 18

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5. Sarah made 17 out of 25 free throws during practice. What percentage of free throws did she NOT make? A. 68% B. 58% C. 32% D.

Elanso [62]

Answer:

C. 32%

Step-by-step explanation:

The percent 17 is of 25.

17 of 25 can be written as:

17/25

To find percentage, we need to find an equivalent fraction with denominator 100. Multiply both numerator & denominator by 100

17/25 * 100/100

= (17 * 100/25) * 1/100 = 68/100

Therefore, the answer is 68%

If Sara made 68% of her free shows, that means she didn't make 32% of her free throws (100 - 68 = 32).

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2 years ago

Its 9:50 what time will it be 1 hour and 30 minutes from now

Hatshy [7]

It will be 11:20 am or pm didn't really say but hoped it helped :)

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3 years ago

Gas mileage is the number of miles you can drive on one gallon of gas. a test of a new car results in 450 miles on 10 gallons of

In-s [12.5K]

A.
miles per gallon
given
450 miles on 10 gallons
450/10=45/1=45mi/1gal
45mpg

the milage is 45 miles per gallon

b.
60 gallons?
45 miles per gallon times 60 gallons=2700 miles
can travel 2700 miles with 45 gallons

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3 years ago

drew 's tree company delivered pear tree in groups of 4.yesterday the company delivered 8 groups of pears trees how many pear tr

lina2011 [118]

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4 × 8 = 32

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3 years ago

Read 2 more answers

The volume of this regular pentagonal pyramid is 82.5 cubic meters. What is the height of the pyramid?

a_sh-v [17]

the height of the pentagonal pyramid is 5. 70 meters

<h3>Volume of a regular pentagonal pyramid</h3>

The formula for determining the volume of a regular pentagonal pyramid is given as;

V=5/12tan(54°)ha^2

Where

a is the base edge
h is the height

We have the volume to be;

volume = 82. 5 cubic centers

height = h

a = 5m

Substitute the values

$82. 5 = \frac{5}{12}$ × $tan 54$ × $h$ × $5^2$

$82. 5 = 0. 42$ × $1. 3764$ × $25$ × $h$

Make 'h' subject of formula

$h = \frac{82. 5}{14. 45}$

h = 5. 70 meters

The height of the pentagonal pyramid is 5. 70 meters

Thus, the height of the pentagonal pyramid is 5. 70 meters

Learn more about a pentagonal pyramid here:

brainly.com/question/16315924

#SPJ1

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1 year ago