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3 years ago

Find the area of the rectangle 12ft by 9ft

Mathematics

1 answer:

Shtirlitz [24]3 years ago

6 0

The area is 12X9=108ft^2

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The sides of a triangle are x, x+7, and 2x-8. If the perimeter of the triangle is 47, what is x

kirza4 [7]

just like the previous one, we sum the sides to get the perimeter.

$\bf (x)+(x+7)+(2x-8)=47\implies 4x-1=47\implies 4x=48\\\\\\x=\cfrac{48}{4}\implies x=12$

8 0

3 years ago

The table below shows the scores of a group of students on a 10-point quiz.Test ScoreFrequency3 54 15 16 27 28 49 310 1The mean

Katarina [22]

Explanation

Part A

We can use the formula below to find the mean.

$\text{Mean}=\sum ^{}_{}(\frac{fx}{f})$

We will then have;

$\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}$

Mean = 6.2632

Part B

Since the data set is odd.

$\begin{gathered} \text{Median}=\frac{(n+1)}{2}^{th}\text{observation} \\ =\text{Value of }\frac{\text{(19+1)}}{2}^{th}\text{observation} \\ =\text{value of 10th observation} \end{gathered}$

Answer: From the column of cumulative frequency cf, the median is 7

5 0

1 year ago

Help meee asap!!!!!!!!!!!!!!!!!!!!!!!

forsale [732]

Answer: see attachments

<u>Step-by-step explanation:</u>

Slope-Intercept format is: y = mx + b

↓ ↓

↓ Intercept (where it crosses the y-axis)

Slope (rise over run)

3 0

3 years ago

Anyone pls answer this plssssss

Arlecino [84]

Answer:

a) x= 55°

b) x= 112°

c) x= 59°

5 0

2 years ago

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Javier works in a photo lab and needs to make a reduced copy of a photograph that is 8 inches long. The customer wants the copy

Svetllana [295]

The boss is correct because if you press the button 5 time knowing that if u press it one time it is going to have the photo at 7.04 inches so if you keep going by the time you get to 5 times it is going to about 4.22 so you would have had to press it 4 times which would equal 5.4 inches

7 0

3 years ago

Read 2 more answers