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2 years ago

Find the value of x please

Mathematics

2 answers:

Marianna [84]2 years ago

7 0

Answer:

2x +5x-20+3x=180(angle of triangle)

10x-20=180

10x=180+20

10x=200

x=200/10

x=20

Galina-37 [17]2 years ago

3 0

Answer:

$x = 20$

Step-by-step explanation:

Angles in a triangle is added up to 180 degrees

So, You can simply Solve it like this

$2x + 3x + 5x - 20 = 180 \\ 10x = 180 + 20 \\ 10x = 200 \\ \frac{10x}{10} = \frac{200}{10} \\ x = 20$

Hope this helps you.

Have a nice day!

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A teacher wants to give 3 markers to each of he 25 students. Markers come in packages of 8. How many packages of markers will th

Marysya12 [62]

Answer:

25*3*8=600

Step-by-step explanation:

25 students has 3 markrers for each then 25*3 is 75, after that marker come in packages of 8,so 75*8 is 600 packages.

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3 years ago

Please help me solve this problem.

Tasya [4]

Let

x-------> total peanuts originally from the bag

we know that

1) Phillip took 1/3 of the peanuts from the bag--------> (1/3)*x

remaining=x-(1/3)*x-------> (2/3)*x

2) Joy took 1/4 of the remaining peanuts-------> (1/4)*[(2/3)*x]----> (1/6)*x

remaining= (2/3)*x-(1/6)*x------> (1/2)*x

3) Brett took 1/2 of the remaining peanuts------> (1/2)*(1/2)*x-----> (1/4)*x

remaining= (1/2)*x-(1/4)*x-------> (1/4)*x

4) Preston took 10 peanuts------> 10

(1/4)*x-10=71----> multiply by 4 both sides----> x-40=284----> x=324 peanuts

5) Total originally peanuts from the bag is equal to 324 peanuts

6) Phillip took (1/3)*x-----> (1/3)*324=108 peanuts

7) Joy took (1/6)*x------> (1/6)*324=54 peanuts

8) Brett took (1/4)*x------> (1/4)*324=81 peanuts

9) Preston took 10

check

108+54+81+10=253

remaining=324-253------> remaining=71-------> is correct

6 0

3 years ago

Mr. Webb gave his waiter a $8.60 tip on a $50 bill. What percent did he give the waiter?

Dominik [7]

8.60 = X 
50 100

"Percent" means "out of one hundred" (Latin).
Multiply the top by two, since 100 is twice 50, and the fractions will be equal.
The answer is 17.2%.

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3 years ago

Read 2 more answers

Your friend's swimming pool is in the shape of a rectangular prism, with a length of 25 feet, a width of 8 feet, and a height of

RUDIKE [14]

Answer:

Part a) $V=1,000\ ft^{3}$

Part b) $h=5\ ft$

Part c) $=718\ gal$

Step-by-step explanation:

Part a) What is the volume of your friend's swimming pool?

we know that

The volume of a rectangular prism is equal to

$V=LWH$

substitute the values

$V=(25)(8)(5)=1,000\ ft^{3}$

Part b) Your swimming pool is in the shape of a cylinder with a diameter of 16 feet and has the same volume as your friend's pool. What is the height of your pool?

we know that

The volume of a cylinder is equal to

$V=\pi r^{2} h$