3 years ago

Help I need the answers in 20 minutes

Mathematics

2 answers:

irakobra [83]3 years ago

7 0

Answer:

Step-by-step explanation:

1st row: 0.02, 30, $10.00

2nd row: $ 0.3, 200, 300

3rd row: $ 0.10, 60, 150

Hope this helps

larisa86 [58]3 years ago

3 0

Answer:

easy so for the copy and go for the second box it would be $0.12 Step-by-step explanation:

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The mean of 5 scores is 75, four of the numbers are 60, 70, 80, & 85. What is the 5th score?

Ainat [17]

Answer:

Step-by-step explanation:

Your 4 given numbers equal 295. 5x75 is 375. So take 375-295 and you get 80, your 5th number.

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3 years ago

If 30+12x represents the area of a partitioned rectangle, what could be expressions for the side lengths? List at least 5 possib

astra-53 [7]

1. 10+4x
2. 15+6x
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3 years ago

A line segment has endpoints Q(-16, -12) and R(21, -8).

gulaghasi [49]

Answer:

(2.5, - 10 )

Step-by-step explanation:

given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is

( $\frac{x_{1}+x_{2} }{2}$ , $\frac{y_{1}+y_{2} }{2}$ )

here (x₁, y₁ ) = (- 16, - 12 ) and (x₂, y₂ ) = (21, - 8 ) , then

midpoint = ( $\frac{-16+21}{2}$ , $\frac{-12-8}{2}$ ) = ( $\frac{5}{2}$ , $\frac{-20}{2}$ ) = (2.5, - 10 )

4 0

2 years ago

So I kinda forgot how to do this *nervous laughter* um help

natali 33 [55]

1) value of x =60

2) value of x = 3

Step-by-step explanation:

We need to use cross products to solve the proportions of x.

$1.\,\, \frac{3}{5}= \frac{x}{100}$

Solving:

$\frac{3}{5}= \frac{x}{100}\\Cross\,\,multiply\,\,:\\5x=3*100\\5x=300\\x=\frac{300}{5}\\x=60$

So, value of x =60

$2.\,\,\frac{x}{8}=\frac{7.5}{20}$

$\frac{x}{8}=\frac{7.5}{20} \\20x=7.5*8\\20x=60\\x=\frac{60}{20}\\ x=3$

So, value of x = 3

Keywords: Ratio and Proportions

Learn more about Ratio and Proportions at:

#learnwithBrainly

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2 years ago

Which of these numbers is in the solution set of x + 5 = 15? A. 10 B. 3 C. 20 D. 11

stealth61 [152]

Answer:

Step-by-step explanation:

10 + 5 = 15

6 0

3 years ago

Read 2 more answers