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3 years ago

at a school 111 students play at least one sport this is 30% of the students at the school how many students are at the school

Mathematics

1 answer:

mixas84 [53]3 years ago

3 0

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What's the difference between 126 1/4 78 2/3

Stels [109]

Difference means subtract, so we use subtraction:

*first we need to make the fractions have the same denominator

1/4 = 3/12
2/3 = 8/12

126(3/12) - 78(8/12)
*since the fraction in the first term is smaller than the second, make it improper

125(15/12) - 78(8/12)

now simply subtract:

125 - 78
= 47

15 - 8
= 7
* this is now (7/12)

now put them back together:

47(7/12)

That's the final answer!

3 0

3 years ago

2x^2+28x+98=0 factor completely

Julli [10]

2(x+7)^2=0 would be your answer :)

4 0

3 years ago

A square pyramid. The square base has side lengths of 6 inches. The 4 triangular sides have a base of 6 inches and height of 9 i

Marrrta [24]

Answer:

The area of the pyramid’s base is 36 in².

The pyramid has 4 lateral faces.

The surface area of each lateral face is 27 in².

Step-by-step explanation:

"Lateral" means side, so the lateral faces are triangles.

The base is the bottom, which is a square.

To calculate the area of the base, use the formula for area of a square.

$A_{base} = s^{2}$

$A_{base} = (6 in)^{2}$

$A_{base} = 36 in^{2}$

To calculate the area of a lateral face, find the area of a triangle.

$A_{lateral} = \frac{bh}{2}$

$A_{lateral} = \frac{(6 in)(9 in)}{2}$

$A_{lateral} = \frac{54 in^{2}}{2}$

$A_{lateral} = 27 in^{2}$

In a pyramid, the number of lateral faces is the same as the number of sides in the base. The square base as 4 sides, so there are 4 lateral faces.

3 0

3 years ago

Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red br

Alekssandra [29.7K]

It is given in the question that

Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red bricks cost $0.58 each. She can spend up to $200 on her project, and wants the number of red bricks to be less than half the number of gray bricks.

Maximum she can spend is $200. That is

$0.45x + 0.58y \leq 200
\\ y< \frac{1}{2} x$

And

$x\geq 0 , y \geq 0$

And that's the required inequalities .

7 0

3 years ago

Someone please help me I suck @ simplifying thank you

ycow [4]

The anwer is 67/72 and can not be simpled any more

5 0

3 years ago

at a school 111 students play at least one sport this is 30% of the students at the school how many students are at the school​

at a school 111 students play at least one sport this is 30% of the students at the school how many students are at the school