MATHEMATICS MIDDLE SCHOOL

Keanna paid 240$ for an X-box with a 15% markup from the original price. What was the original price

Answers

Answer 1
Answer: 240$ x .15 = 36 + 240$ = 276$
Answer 2
Answer:

Answer:

$204

Step-by-step explanation:

you have to do 15% of 240 and you get 36

you subtract 36 from 240 to get 204

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A 13-ounce package of pistachios costs $5.99. What's the unit rate?

Answers

we know that

A rate is a ratio that compares quantities in different units. A unit rate is a rate where the second quantity is one unit

so

In this problem to find the unit rate

Divide $5.99 by 13\ ounces

unit\ rate=(5.99)/(13)(dollars)/(ounce) \n \n unit\ rate=0.46(dollars)/(ounce)

therefore

the answer is

the unit rate is equal to 0.46(dollars)/(ounce)
The unit rate is $0.46 per ounce because $5.99/13oz=$0.46/oz. 

Find the slope between points (2,3) and (-1,0)

Answers

Answer:

slope = 1

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (2, 3) and (x₂, y₂ ) = (- 1, 0)

m = (0-3)/(-1-2) = (-3)/(-3) = 1

Answer:

slope is 1

Step-by-step explanation:

to find the slope you would take (y2-y1)/(x2-x1)

Can someone please help me!!

Answers

Answer: B

If you would like further explanation let me know. :)
The answer would be B.

At Blooming Gardens nursery, they are currently running the following promotion: Buy three trees of the same kind at the regular price and get the fourth at 80% off. Jocelyn is needing some trees for her backyard and decided to buy four red oak trees using the promotion. The regular price for a red oak tree is $390.00. Based on a tax rate of 8.25%, Jocelyn ended up saving $ by using the promotion.

Answers

regular price is
4 times 390=1560
tax=8.25%
1560 times 0.0825=128.7
add that
1560+128.7=1688.7 is price if didn't use promotion

if deal then
3 normall trees+1 that is 80% off
find the 4th tree
390 times 0.80=312 off
390-312=78
3 normal trees+78=3 times 390+78=1248
find the tax
0.0825 times 1248=102.96
add
1248+102.96=1350.96

compare prices

1688.7 no promotion
1350.96 with promotion
subtract
1688.7-1350.96=337.74

she saved $337.74

a patio is shaped like a golden rectangle. it's length ( the longer side) is 16ft. what is the patios width? write your answer in simplified radical form.

Answers

a\ golden\ rectangle:\ \ \ (a+b)/(a)= (a)/(b) \n----------------\na+b=16\ [ft]\ \ \ \ \Rightarrow \ \ \ b=16-a\n\n (16)/(a) = (a)/(16-a) \ \ \ \ \Leftrightarrow\ \ \ 16(16-a)=a^2\n\na^2+16a-256=0\n\n\ \ \ \Rightarrow\ \ \ \Delta=16^2-4\cdot(-256)=256\cdot5\ \ \ \Rightarrow\ \ \ √(\Delta) =16 √(5) \n\na_1= (-16-16 √(5) )/(2) =-8-8 √(5) <0\n\na_2= (-16+16 √(5) )/(2) =-8+8 √(5)=8( √(5) -1)>0\n\n

a=8( √(5) -1)\ \ \Rightarrow\ \ b=16-8( √(5) -1)=16-8√(5) +8=8(3- √(5) )\n\nAns.\ This\ golden\ ractangle\ has\ sides:\n.\ \ \ \ \ \ \ 8( √(5) -1)\ [ft]\ \ and\ \ 8(3- √(5) )\ [ft]

describe what would be true about the rate of change in a situation that could be represented by a graphed line and an equation in the form y=mx + b

Answers

If y=mx+b,

\frac { dy }{ dx } =m

You can't differentiate a constant, so dy/dx=m.
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