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TiliK225 [7]
4 years ago
11

The ratio of girls to boys in French class is 5:4. There are 12 boys in the class. How many girls are there?​

Mathematics
2 answers:
jolli1 [7]4 years ago
8 0

Answer:

15

Step-by-step explanation:

5/4=15/12

Svet_ta [14]4 years ago
7 0

Answer:

15 girls

Step-by-step explanation:

G : B : total

5 : 4 : 9

? :12: ?

No. of girls = (12x5)/4 = 15 girls

we put the ratio between girls and boys then we add the (total) or(sum) beside them in the same ratio then the summation of the ratio, like (5 +4 = 9) and then under the word "boys" we put the number given in the question which is (12) , now we need to know the number of girls in the class so we use the cross multiplication which i wrote at first.

by that, you can calculate no. of girls and no. of students in the whole class if you want.

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Nikitich [7]

Answer:

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Step-by-step explanation:

First, solve for the whole 14^2 = 196 cm²

Now, we know it's lenths are the same so it's a square.

Lastly we need to deduct the quarter circle in the square. Use Formula A=πr² = A≈615.75 cm² /4 = 153.9375 cm²

5 0
3 years ago
 Provide the reasons for the proof. Given: RUMH is a rhombus. RUBM is a rhombus. Prove: RHM = UMB
MissTica

Here, RUMH and RUBM are two rhombus as shown in the diagram.

As, a rhombus has four equal sides,

so for RUMH, side RH = side HM = side MU = side UR

and for RUBM, side RM = side MB = side BU = side UR

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Now for two triangles ΔRHM and ΔUMB,

side RH = side MU

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and side HM = side MB

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8 0
4 years ago
Is (3,13) a solution of y = 2x - y
PtichkaEL [24]

Answer:

NO

Step-by-step explanation:

(x, y) so if you plug in your points... 13 = 2(3) - 13

To solve:

Multiply:    13 = 2(3) - 13

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5 0
3 years ago
Expand the brackets. 7 ( 5 + g ) 11 ( 3s – 4 ) 4 ( 4 – x ) 8 ( 6 + 4w )
goldfiish [28.3K]

Answer:

See answers below

Step-by-step explanation:

Expand the brackets. 7 ( 5 + g ) 11 ( 3s – 4 ) 4 ( 4 – x ) 8 ( 6 + 4w )

We will expand each of the bracket using distributive property

For the expression 7(5+g)

7(5)+7g

= 35+7g

For the expression 11(3s-4)

= 11(3s)-11(4)

= 33s-44

For the expression 4(4-x)

= 4(4)-4x

= 16-4x

For the expression 8(6+4w)

= 8(6)+8(4w)

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6 0
3 years ago
Estimate the square root to the nearest (a) whole number and (b) tenth. Make sure you list 2 answers for these problems.
Aleksandr-060686 [28]

Answer:

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  • -14.8i

Step-by-step explanation:

<h3>(a)</h3>

The nearest squares to 220 are 14² = 196 and 15² = 225. Since 220 is closer to 225 than to 196, the nearest whole number to the square root of 220 is 15.

The square root of -220 is imaginary, so the nearest whole number value will be 15i.

__

<h3>(b)</h3>

The decimal fraction part of the root can be estimated from the nearest squares to be ...

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Then the root of 220 to the nearest tenth is 14.8. The root of -220 to the nearest tenth will be the imaginary number 14.8i.

7 0
3 years ago
Read 2 more answers
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