MATHEMATICS HIGH SCHOOL

Last year 7/16 of all students at a school participated in the science fair. About what percentage of the students participated?

Answers

Answer 1
Answer:

Answer:

43.75% students were participated last year.

Step-by-step explanation:

We have been given that last year 7/16 of all students at a school participated in the science fair.

Let us suppose the total number of students were x. Then, number of students participated last year is given by

(7)/(16) x

Hence, the percentage of the students participated last year is given by

\%=((7)/(16)x )/(x) * 100\n\n\%=(7)/(16)* 100\n\n\%=43.75\%

Therefore, 43.75% students were participated last year.
Answer 2
Answer: 7/16*100=43.75% Can be rounded to 44

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Nancy’s grandma needs 5/8 of a yard of lace for each doll hat she makes. How many doll hats can she make with 10 yards of lace?

Answers

16 10 divided by 5/8 = 16

If
x + 2y = 1
x-2y = 13'
then y =

Answers

On solving the given set of equations, we get the value of y = 3.

What do we mean by simultaneous equations?

A set of equations having two or more variables whose values ​​can satisfy all the equations in the set at the same time, with the number of variables equal to or fewer than the number of equations in the set is called simultaneous equations.

How do we solve the given question?

We are given a set of simultaneous equations in x and y,

x + 2y = 1

x - 2y = 13.

We are asked to find the value of y.

Let the equations

x + 2y = 1... (i)

x 2y = 13 ... (ii).

To solve for y, we subtract (i) from (ii) to get,

x - 2y = 13\nx+2y=1\n(-)(-)(-)\n------\n-4y = 12

∴ We get -4y = 12.

Dividing both sides of this equation by -4, we get,

(-4y)/(-4) = 12/(-4)

or, y = -3.

∴ On solving the given set of the equation we get the value of y = 3.

Learn more about simultaneous equations at

brainly.com/question/148035

#SPJ2

Answer:

y= -3

Step-by-step explanation:

adding both the equation we get x= 7

and then put value of x in any one equation u will get y as -3

Which decimal is equivalent to 5/6

Answers

the answer is 0.8333.....
0.8333 or 83.333% your welcome

Mom buys a rectangular rug with an area of 7 1/6 square meters. The length of the rug is 3 1/3 meters. What is the width of the rug?

Answers

Answer:

  • 2 3/20 m

Step-by-step explanation:

The area is the product of the length and width

  • The area = 7 1/6 m² = 43/6 m²
  • The length = 3 1/3 m = 10/3 m

Width = ?

  • A = lw
  • w = A/l
  • w = 43/6 ÷ 10/3 = 43/6 × 3/10 = 43/20 = 2 3/20 m

The width is 2 3/20 m

The cheerleaders are making a banner that is 8 feet wide. The length of the banner is 1 1/3 times the width of the banner. How long is the banner?

Answers

The banner is around 10.6 feet. It's because all you need to do is to divide 8 by 3, and then add it with 8 times 1 (since it's 1 1/3 times the width of 8 feet). Once you add up the two answers that we first got, you will be able to get 10.66666, or just simply 10.6 feet.

An office building casts a 90 foot shadow. At the same time of day, a 5 foot woman standing near the building casts an 8 foot shadow. What is the approximate height of the building to the nearest foot?A) 40 feet
B) 49 feet
Eliminate
C) 56 feet
D) 63 feet

Answers

I think it would be C) 56 feet. See, if we take the height of the woman(5) over the shadow she casts(8), and crossmultipy it with the height of the building(?) over the shadow of the building(90), it would be approximately 56 feet.       5/8  ?/90      90x5= 450 450/8= 56.25                                                       
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