3 years ago

Item 15

Mathematics

1 answer:

Shtirlitz [24]3 years ago

8 0

Answer:

Step-by-step explanation:

4*7= 28

when there is a variable (letter next to the number) next to the number like 4a it means 4 multiplied by a. since a is 7, 4 multiplied by 7 is 28.

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Corey wants to estimate the height of the statue of Stephen F. Austin in Angleton, Texas. He stands approximately 19.3 feet away

aniked [119]

The statute is about 80 feet tall

<h3>Similar triangles;</h3>

In order to get the height of the statute, we will need to get the base of the bigger triangle using the similarity theorem of triangles as shown:

B/19.3 = 19.3/5

5B = 372.49

B = 372.49/5

B = 74.498

<h3>Get the height of the status</h3>

The height of teh status = B + 5

Height of the status = 74.498 + 5

Height of the status = 79.498

Hence the statute is about 80 feet tall

Learn more on similar triangles here: brainly.com/question/2644832

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recipe for sparkling grape juice calls for 5/8 quarts of sparkling water and 1/5 quarts of grape juice how much sparkling water

ohaa [14]

You would need 18 3/4 quarts of sparkling water.

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3 years ago

Solve the following quadratic equation for all values of x in simplest form. 7+2x^2=11

ollegr [7]

Answer:

$x=-\sqrt2\text{ or } x=\sqrt2$

Step-by-step explanation:

We have:

$7+2x^2=11$

To solve, we will isolate the x variable. Therefore, subtract 7 from both sides:

$2x^2=4\\$

Divide both sides by 2:

$x^2=2$

Take the square root of both sides. Since we’re taking an event root, we will need plus/minus. Therefore:

$x=\pm\sqrt2$

Therefore, our solutions are:

$x=-\sqrt2\text{ or } x=\sqrt2$

6 0

3 years ago

In the paper drive, 4 boys brought old papers to school as follows: Fred, 30 pounds; Albert, 40 pounds; Henry, 10 pounds; and Pe

seraphim [82]

B: 30 pounds is the correct answer

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3 years ago

Read 2 more answers

3/5 divide by 5/9 please help

klemol [59]

First of all you flip around the last fraction:
5/9 to 9/5

Then you multiply the top and the bottom number:
3*9/5*5 = 27/25 = 1.08

Hope this helps! :)

3 0

3 years ago