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skad [1K]
4 years ago
5

Help please if your good at maths ?

Mathematics
1 answer:
Norma-Jean [14]4 years ago
3 0

Answer:

Year 7 = 75 students

Year 9 = 25 students

Step-by-step explanation:

Year 7 has 3/8 of the total since the circle is divided into 8 sections and has 3 of the 8 sections

3/8 * 200 students = 75

Year 9 has 1/8 of the total since the circle is divided into 8 sections and has 1 of the 8 sections

1/8 * 200 =25

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in Math class we are Learning about Pi which equals 3.14 how do you find the diameter and radius i dont understand it can you gu
kirill [66]
If you're finding diameter or radius based on circumference, use the formula C = πd. You would divide the circumference by pi to get the diameter, then divide the diameter by 2 to get the radius.

If you're finding diameter or radius based on area, use the formula A = πr^2. You would divide the area by pi, then find the square root of that value which is the radius. Just multiply the radius by 2 to find diameter.
7 0
3 years ago
-3x-3y=3 and y=5x-17
Vesna [10]
The answer for this question is "y = -5/3 and x = 8/3"
5 0
3 years ago
The sales tax for an item was $9.60 and it cost $320 before tax.
wel

Answer:

329.6 $

Step-by-step explanation:

320 + 9.60 = 329.6

Hopefully this helps you :)

pls mark brainlest ;)

3 0
3 years ago
Read 2 more answers
If c(x) = 4x-2 and d(x) = x^2 + 5x is is (c•d) (x)
FinnZ [79.3K]
<h3>Answer: (c * d)(x) = 4x^3 + 18x^2 - 10x</h3>

Work Shown:

I'm assuming the dot means multiplication. If so, then,

(c * d)(x) = c(x)*d(x)

(c * d)(x) = [ c(x) ] * [ d(x) ]

(c * d)(x) = (4x-2)(x^2+5x) .... substitution

(c * d)(x) = 4x(x^2+5x) - 2(x^2+5x) ... distribute

(c * d)(x) = 4x(x^2)+4x(5x) - 2(x^2)-2(5x) ... distribute again

(c * d)(x) = 4x^3 + 20x^2 - 2x^2 - 10x

(c * d)(x) = 4x^3 + 18x^2 - 10x

3 0
3 years ago
The ice cream shop sells sundaes for $2 each and banana splits for $3 each. One day, the shop sold 8 more sundaes than banana sp
alukav5142 [94]

Answer:

s = 8+b\\2s+3b=156

Step-by-step explanation:

To find which systems of equation represents the situation, we can break down the key information and create two variables:

<u>Variables:</u>

Let s = number of sundaes sold.

Let b = number of banana splits sold.

<u>Given information:</u>

Sundae: \$2

Banana Splits: \$3

8 more sundaes sold than banana splits. This can be expressed by s=8+b.

Total sold was \$156. This can be expressed as 2s+3b=156.

∴ The systems of equation that expresses this situation are s=8+b and 2s+3b=156.

Hope this helps :)

3 0
3 years ago
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