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KengaRu [80]
3 years ago
9

A middle school yearbook committee has 35 members. There are 7 more girls than boys. Write a system of linear equations, define

your variables, and solve the system to find the number of boys and number of girls.
Mathematics
1 answer:
frez [133]3 years ago
5 0

if the number of boys is x ,then the number of girls is x+7,so 2x+7=35,we can know x=9,so the number of boys is 9,and girls are 16

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All 28 members in Crestview High School’s Ski Club went on a one-day ski trip. Members can rent skis for $16.00 per day or snowb
antoniya [11.8K]

The way I would approach such a question is to put it into equations. My first equation would be 16x+19y=478 which represents $16 on ski's per person and $19 on snowboards must add up to $478 My second would be x+y=28 because the number of skis and snowboards rented must add up to 28 so each person has one item. Next you solve them simultaniously. Gonna use elimination 

16x+19y=478 (1) 

<span>x+y=28 (2) </span>

16x+16y=448 (3 = equation 2 * 16) (1)-(3) => 3y=30 y = 10. So now we know that 10 people rented snow boards. Just sub that into eq (2) and get x = 18. So 10 people got snow boards and 18 ski's. 

To check, 10x19 = 190 16x18= 228 

190+228=478 which works out perfectly!

8 0
3 years ago
there are 420 girls and boys at a community centre.The ratio of girls and boys at the centre is 7to 3.How many girls are at the
astraxan [27]
G + b = 420 ;
g / b = 7 / 3 ;
Then, g = ( 7 / 3 )b;
( 7 / 3 )b + b = 420 ;
7b + 3b = 1260 ;
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b = 126 ( boys );
g = ( 7 / 3 )× 126 = 294 ( girls ) ;
3 0
4 years ago
Select the correct answer.
Yuliya22 [10]

Answer: B is your correct answer.

Step-by-step explanation: If she has already made $95.00 from selling jam and made $24.00 from demonstrations you add those together to get $119. Then you subtract $119.00 from $450.00 and you'll have $331.00 left to make. Finally you divide $331.00 by $5.00 (cost of jam) and you'll find that you have to sell 66 more jars of jam.

5 0
4 years ago
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Shalnov [3]

Answer:

Jeff= 1 orange is $1.54 1 apple $1.54

Gene=  1 orange $1.28 1 apple $2.13

Have a great day. Brainliest please

6 0
4 years ago
Which phrase correctly orders 2, –3, –15, and –8?
marshall27 [118]
A negative is less than 0. So the greater the negative number the less it is.

So the greatest negative number is -15 and the great number of value is 8. 

so the correct order should be -15,-3,2 and 8.

Understand?
7 0
3 years ago
Read 2 more answers
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