MATHEMATICS MIDDLE SCHOOL

Brandon’s family went out to dinner. The dinner bill was $85 and the family gave the server a 20% tip. How much is the tip?

Answers

Answer 1

Answer:

Answer: The tip is $17

Step-by-step explanation: You multiply $85 by .2 to get this answer.

Answer 2

Answer:

Answer:

$17

Step-by-step explanation:

85x0.20= 17

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Gabriel saves 40% of his monthly paycheck for college. He earned $270 last month. How much money did Gabriel save

Answers

Answer: B. $108

Step-by-step explanation:

Given : Gabriel earned $270 last month.

Thus, monthly earning by Gabriel= $270

As Gabriel saves 40% of his monthly paycheck for college.

Therefore, Savings for collage=40% of $270

⇒Savings for collage=$( $(40)/(100)*270$ )

⇒Savings for collage=$( $4*27$ )

⇒Savings for collage=$108

Therefore, Gabriel save $108 for college.

The best thing to do is to find 10%, and you can do this by dividing $270 by 10, and therefore, $27 is equal to 10%.To find 40%, you've got to multiply $27 by 4, and this gives you $108.Therefore, gabriel saved $108 last month :)

Yolanda owns 4 rabbits. She expects the number of rabbits to double every year.Write an equation to model this situation.

Answers

R=Number of rabbits

y=Years that have passed by { y ≥ 0 }

R=f(y) --> R is a function of y.
---------------------------------------------

Note that when:

y=0, R=4 ---> Point: (0, 4)

y=1, R=8 ---> Point (1, 8)

y=2, R=16 ---> Point (2, 16)

y=3, R=32 ---> Point (3, 32)

y=4, R=64 ---> Point (4, 64)

--------------------------------------------

So the equation you want is going to form a curved graph.

That equation is:

$R={ 2 }^( y+2 )$

*You can test out this function on any decent graphing software.

This is an exponential function.

At year $x$ , the number of rabbits would be as follows:

$y=4e ^((x*(In2)))$

Where x is the number of years

A right triangle has an area of 50 square inches. If the triangle is an isosceles triangle, what are the lengths of the legs of the triangle?

Answers

area=1/2bh
50=1/2bh
times 2
100=bh
solve for b
divide by h
100/h=b
we hav to make a drawing
since it is isocoleese
h=b
100=b^2=h^2
h=b=10
answer is 10 inches

10in and 10in, because 10x10=100, and 100/2=50

If the ratio of boys to girls in the classroom is 3 to 5, if there are 25 girls in the class how many boys are there?