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Nana76 [90]
3 years ago
14

30 POINTS 7TH GRADE MATH! There are 15 girls in your class this year. That is a 15% increase from last year.

Mathematics
1 answer:
klio [65]3 years ago
6 0

Answer:

g/15 = 100/115 so g = 13

Step-by-step explanation:

a 15 percent increase means that there is now 115% of what there was last time. normally its 100% so the ratio is 100:115 and the ratio of gorls is g:15. since the ratios are equal multiply 100/115 by 15 to get g so 13

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the height in feet above the ground of an arrow after it is shot can be modeled by y=-16r^2+63r+4.Can the arrow pass over a tree
miss Akunina [59]

Answer:

yes

Step-by-step explanation:

y=-16r^2+63r+4

maximum value of y :

y'=0

-32r +63=0

r= 63/32

y = -16(63/32)²+63(63/32)+4

= -4 + 124 + 4 = 124 ft

124 > 68

the Arrow can pass over the tree

7 0
3 years ago
The difference between two numbers is 25. The smaller number us 1/6th of the larger number. What is the value of the smaller num
Nataliya [291]

Answer:

5

Step-by-step explanation:

Let L be the larger number and s be the smaller one.

Then we have two equations.

(1) L – s = 25

(2)       s = L/6     Multiply both sides by 6

        6s = L         Substitute the value for L in Equation(1)

 6s – s = 25        Combine like terms

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The value of the smaller number is 5.

7 0
3 years ago
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sveta [45]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Marina is currently 14 years older than her cousin joey. in 5 years she will be 3 times as old as joey. if you let x represent j
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The expression is 14x
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3 years ago
Help pleaseeee ASAP just tell me the answer
iragen [17]

HEY MATE YOUR ANSWER IS HERE

★ GIVEN EQUATION ★

X + Y = 4

★ SOLUTION ★

LET VALUE OF X = 0 , 1 , 2 , 3 AND 4

WHEN X = 0

0 + Y = 4

Y = 4

WHEN X = 1

1 + Y = 4

Y = 3

WHEN X = 2

2 + Y = 4

Y = 2

WHEN X = 3

3 + Y = 4

Y = 1

WHEN X = 4

4 + Y = 4

Y = 0

NOW OUR 5 COORDINATES OF LINE X + Y = 4 ARE

A ( 0 , 4)

B ( 1 , 3 )

C ( 2 , 2)

D ( 3 , 1 )

E ( 4 , 0 )

THANKS FOR YOUR QUESTION HOPE THIS HELPS

can i have a brill

thank u

good luck

6 0
3 years ago
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