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AfilCa [17]
2 years ago
12

A certain high school has 1,488 students. If you subtract the number of girls from boys you get 78. Let x be the number of boys

and y be the number of girls.
Mathematics
1 answer:
Dahasolnce [82]2 years ago
3 0

Answer:

boys = 705

girls = 783

Step-by-step explanation:

We are to find the number of boys and girls in the school

the answer can be determined using simultaneous equation

x = boys

y = girls

y - x = 78  equation 1

y + x  = 1488 equation 2

subtract equation 1 from 2

2x = 1410

x = 1410/2 = 705

Substitute for x in equation 1

y - 705 = 78

y = 705 + 78 = 783

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He counted 206 wheels and 170 pedals. How many bicycles and tricycles does he have.
noname [10]
Bicycle has 2 wheels and 2 pedals
 tricycle has 3 wheels and 2 pedals

EQ 1 : 2b + 2t = 170 pedals

 EQ 2: 2b +3t = 206 wheels

subtract  EQ 1 from EQ 2

2b +3t = 206 - 2b + 2t = 170 = t=36

 there were 36 tricycles

36 x 2 = 72 pedals

170 pedals - 72 = 98 pedals left
98/2 = 49 bicycles

36 Tricycles and 49 bicycles




8 0
3 years ago
Help 5y^5/y^3 a) 5y^2 b) 5/y^2 c) 5y^8 d) 5y
WARRIOR [948]

Answer:

a) 5y²

Step-by-step explanation:

5 divided by 1 is still 5

y^5/y^3 subtract the exponents since the base is the same

6 0
3 years ago
Read 2 more answers
Does this graph represent a function? Why or why not?
In-s [12.5K]
B. No, because it fails the vertical line test.
8 0
3 years ago
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Snezhnost [94]
Not exactly sure if I perfectly remember distributive property but you could right that like 18j + 24 + 15j
6 0
3 years ago
Simplify: 3 . 3^2 + 8 ÷ 2 - (4 + 3) A: 32 B: 24 C: 23 D: 30
yaroslaw [1]

Answer:

its none of these answers ;-;

Step-by-step explanation:

3^2 + 8 ÷ 2 - (4 + 3)

we do what's in parentheses first. (pemdas)

so now we have, 3^2 + 8 ÷ 2 - 7

next exponents, 3^2=9

9 + 8 ÷ 2 - 7

next division, 8÷2=4

9 + 4 - 7

next addition, 9+4=13

13-7

finally subtraction, 13-7=6

final answer: 6

7 0
3 years ago
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