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Alborosie
3 years ago
5

The ratio of boys to girls in a class of

Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer:

The answer is option A.

<h3>35.</h3>

Step-by-step explanation:

To find the number of girls in the class we must first find the total parts

That's

2 + 7 = 9

In the ratio 7 correspond to girls so the number of girls in the class are

7/9 × 45

= 7 × 5

= 35

Hope this helps you

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Ksju [112]

Answer:

17. xy + z = 51

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21. 5z + ( y - x ) = 20

22. 5x - ( y2 - 4x ) = -10

23 . x2 + y2 - 10z = 70

24. z3 + ( y2 - 4x ) = 1

25. y + xz / 2

26 .3y + x2 / z = 30

Step-by-step explanation:

17.(6 x 8)+3=

    48+3=51

18.(8 x 3)- 6 =

     24 - 6 = 18

21. 15 + ( 8 - 3 )

      15 + 5=

        20

22 .30 - (64 - 24)=

      30 - 40=

       -10

23. 36 + 64 - 30

      100 - 30

        70

24.  9 + (16 - 24 )=

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        1

25. 8 + 48 / 2

      56 / 2

       28

26. 24+ 36/3

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       30

4 0
2 years ago
Which figure is NOT a polygon?
alexdok [17]

Answer:

A.

Hope It Help

Step-by-step explanation:

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5 0
2 years ago
Read 2 more answers
Hi I just have a question how do you divide 18/32 with out a calculator.
Bingel [31]
First set it up like this:32 \sqrt{18}
<span>then add a zero on to the 18 and a decimal point like this: </span>32 \sqrt{18.0}
then solve for 180/32 and add a decimal in the same location that it is in the 18.0 Hope this helps!
8 0
3 years ago
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Solve for x.<br><br> logx+log3=log18
ad-work [718]

<u>Answer:</u>

<em>The value of x in log x + log 3 = log 18 is </em><em>6</em><em>.</em>

<u>Solution:</u>

From question, given that log x + log 3 = log 18 ---- eqn 1

Let us first simplify left hand side in above equation,

We know that log m + log n = log (mn) ----- eqn 2

Adding log m and log n results in the logarithm of the product of m and n (log mn)  

By using eqn 2, log x + log 3 becomes log 3x.  

log x + log 3 = log 3x ---- eqn 3

By substituting eqn 3 in eqn 1, we get

log 3x = log 18  

Since we have log on both sides, we can cancel log and the above equation becomes,

3x = 18

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Thus the value of x in log x + log3 = log18 is 6

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3 years ago
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garri49 [273]

Answer:

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Step-by-step explanation:


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