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kodGreya [7K]
3 years ago
13

Estion 3/10

Mathematics
2 answers:
Rus_ich [418]3 years ago
4 0

Answer:

I believe its c but I'm not clearly sure

AlladinOne [14]3 years ago
3 0

Answer:

i think the answer is  d if im not u can report me

Step-by-step explanation:

plz mark as brainliest

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The ratio of boys to girls in a group is 7:1. If there are 66 more boys than girls, work out how many girls there are
nevsk [136]

Answer:11

Step-by-step explanation:

Boys : girls=7:1

Sum of ratio=7+1=8

Let them number of girls be y

Then they number of boys=y+66

Total number of pupils=y+y+66

Total number of pupils=2y+66

Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)

y=1/8 x (2y+66)

Cross multiply

y x 8=2y + 66

8y=2y + 66

Collect like terms

8y-2y=66

6y=66

Divide both sides by 6

6y/6=66/6

y=11

The number of girls is 11

4 0
2 years ago
Danielle sells beauty supplies and earns a base salary of $450 per week plus a 9% commission on sales. During one particular wee
Anna007 [38]

Answer:

Should be 530.55 total that week

And 80.55 in commissions

7 0
3 years ago
Huong had $23 to spend on six notebooks. After buying them she had $11. How much did each notebook cost?
Nataly [62]
23-11=12
She spent $12 on notebooks, and she bought six notebooks.
12/6=2

Each notebook costed $2.
8 0
3 years ago
Read 2 more answers
12. Raul invests $6500 at a simple interest rate of 4%. How much will he earn
kenny6666 [7]

Answer:

$1,560

Step-by-step explanation:

Interest = Principal x Interest Rate x Time (in years)

I = 6500(.04)(6)

I = 1560

7 0
2 years ago
find the value of n in each equation. write what n represents in the related division problem 643=4×160+n
schepotkina [342]

Answer: n = 3; n represents a remainder in a division problem.


Explanation:


1) Finding n:


i) Given: 643 = 4 × 160 + n

ii) Do the operations: 643 = 640 + n

iii) Subraction property of the equality: 643 - 640 = n

iv)  Do the operations: 3 = n

Answer: n 3


2) Meaning of n


When you divide 643 by 4 the quotient is 160 and the remainder is 3, because 160 × 4 = 640, and 643 - 640 = 3.


This is, 3 is what is left when you split 643 into 4 getting 160 whole parts (plus the remainder, 3).

3 0
3 years ago
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