MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer: 440

Step-by-step explanation:

Current population =400

0.02 increase= 2% increase

2% increase per year= 2/100 ×400 = 8

For 5 years, 8× 5= 40 additional students

Population in 5years will be current population + expected population = 400+ 40= 440

HIGH SCHOOL

Evaluate the square root of x^2 - 5x when x = 7. Round your answer to the nearest hundredth

X^2-5x, given x=7,

(7)^2-5(7)=14

sqrt(14)=3.74

(7)^2-5(7)=14

sqrt(14)=3.74

OK, 72−(5)(7)=14

Its 14 because you plug in the sevens then you get 49-35 which is 14. Hope this answer helps you and mark as brainliest! :)

Its 14 because you plug in the sevens then you get 49-35 which is 14. Hope this answer helps you and mark as brainliest! :)

HIGH SCHOOL

What is the perimeter of the rectangle?

The perimeter of a rectangle is the distance around the outside of the rectangle. A rectangle has four sides with opposite sides being congruent. The formula for finding the perimeter is Side A + Side B + Side A + Side B. This could also be stated as 2*Side A + 2*Side B or 2*(Side A + Side B)

HIGH SCHOOL

What percent of 170 is 68?

393 is 60% of what number?

68 ÷ 170 = 0.4

0.4 * 100 = 40

68 of 170 = 40%

393 ÷ 60% = ?

60% ÷ 100 = 0.6

393 ÷ 0.6 = 655

393 is 60% of 655

0.4 * 100 = 40

68 of 170 = 40%

393 ÷ 60% = ?

60% ÷ 100 = 0.6

393 ÷ 0.6 = 655

393 is 60% of 655

MIDDLE SCHOOL

7k-6k=16 solve for k

K=16.

7(16)-6(16)= 16

7(16)-6(16)= 16

K = 16. You subtract the 7k and 6k. Then divide 16 by 1 and 1k by 1. The 1k cancels out so it’s just 16

HIGH SCHOOL

△XYZ is mapped to △X'Y'Z' using the rules (x, y)→(x+5, y−3) followed by (x, y)→(−x, −y) . Which statement describes the relationship between △XYZ and △X'Y'Z'?

△XYZ is congruent to △X'Y'Z' because the rules represent a translation followed by a rotation, which is a sequence of rigid motions.

△XYZ is not congruent to △X'Y'Z' because the rules do not represent a sequence of rigid motions.

△XYZ is congruent to △X'Y'Z' because the rules represent a rotation followed by a reflection, which is a sequence of rigid motions.

△XYZ is congruent to △X'Y'Z' because the rules represent a rotation followed by a translation, which is a sequence of rigid motions.

Given that △XYZ is mapped to △X'Y'Z' using the rules (x, y)→(x+5, y−3) followed by (x, y)→(−x, −y) .

We know that (x,y) => (x+h,y+k) type operation represents translation so rule (x, y)→(x+5, y−3) will cause translation.

We know that (x,y) => (-x,-y) type operation represents rotation about origin so rule (x, y)→(−x, −y) will cause rotation.

So combining both results and comparing with given choices. we find that only 1st choice "△XYZ is congruent to △X'Y'Z' because the rules represent a translation followed by a rotation, which is a sequence of rigid motions."

is correct.

MIDDLE SCHOOL

a jar contains 2 red and 4 blue marbles. a marble is drawn from the jar. what is the probability that a red marble will be drawn?

2 red / 4 blu

just semplify

1 red / 2 blu

so the probability is

1/2

Answer:

The answer is 50% Hope this helps!

MIDDLE SCHOOL

the _______________________________ is a number that tells how many times a base is used as a repeated factor.....................is it A.base,B.exponent,C.order of operations,D.subtraction property of equality

I think its B. im learning this stuff in school too:)

hope I helped!:)

The question is worded strangely but if I am reading it correctly, the answer is exponent, because it tells how many times the base number is multiplied by itself

MIDDLE SCHOOL

The seventh grade class supplied bags of snacks and beverages for the school dance They supplied19 more beverages than bags of snacks The dance was supplied with a total of 371 items.

Answer:

The number of number of bags of snacks = m = 176

The number of beverages supplied = m + 19 = 176 +9 = 185

Step-by-step explanation:

Let us assume the number of bags of snacks = m

So, the number of beverages supplied = m + 19

Total number of items supplied = 371

⇒ Number of (snacks + beverages) supplied= 371

⇒ m + (m +19) = 371

or, 2 m = 371 - 19 = 352

or, m = 352 / 2 = 176

⇒ m = 176

Hence the number of number of bags of snacks = m = 176

So, the number of beverages supplied = m + 19 = 176 +9 = 185

MIDDLE SCHOOL

Does 2/5 round to 1/2

It does if you're rounding to the nearest 1/2 .