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Furkat [3]
3 years ago
10

For every 3 girls in Mr Hegarty's class there are 4 boys. What is the ratio of girls to boys in the class?

Mathematics
1 answer:
Illusion [34]3 years ago
6 0

Your answer would be 3:4

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Find the value of x.
hjlf

Answer:

x = 14

Step-by-step explanation:

Since they are similar triangles, their sides are proportional

12 : 15  :: 8 : x - 4

Product of extremes = Product of means

12 × ( x- 4 ) = 15 × 8

12x -48 = 120

12x = 120 + 48

12x = 168

x = 168/12

x = 14

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2 years ago
Given the following coordinates, what is the the length of the diagonals?
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3 years ago
How many different 4-question geometry quizzes can a teacher make if there are 7 different problems to test on?.
stich3 [128]

Answer:

35 quizzes

Step-by-step explanation:

We need to determine how many ways we can choose 4 questions out of 7 to make the quizzes.

We do this by using the formula \displaystyle nCr=\frac{n!}{r!(n-r)!} which describes the number of ways we can choose r objects given n possible choices. So, if n=7 and r=4, then:

_4C_7=\frac{7!}{4!(7-4)!}\\\\_4C_7=\frac{7*6*5*4!}{4!*3!}\\\\_4C_7=\frac{210}{6}\\\\_4C_7=35

Hence, the teacher can make 35 different geometry quizzes.

3 0
2 years ago
I NEED HELP ASAP I WILL MARK YOU THE BRAINLIEST
Nataliya [291]
Alternate Interior Angles. You’re welcome
7 0
2 years ago
If the range of the function f(x) = x/4 is {28, 30, 32, 34, 36}, what is its domain?
Rama09 [41]
Hello,

Your brainliest answer would be:

A.) {112, 120, 128, 136, 144}

Plz mark me brainliest!

Hope this helps!
6 0
3 years ago
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