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3 years ago

10a÷2a please show working out or write an explanation thankyou

1 answer:

4 0

A=5

you can divide 10a/2a because they have the same denominator (a).
because they have the same denominator you can look at it as: 10/2=5

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Y=(x-1)^2-9 standard form

dezoksy [38]

Answer:

Y=x^2-2x-8

Step-by-step explanation:

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6 0

2 years ago

He is pulling 400 feet over level ground by exerting a constant 25-pound force on the bar that makes an angle of 30° with the gr

pochemuha

Answer:

It’s b

Step-by-step explanation:

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2 years ago

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Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Lou's car had 5.6

Rasek [7]

26.98. You have the following information given in the problem above:

- Lou filled the tank with gas that cost $3.80 per gallon.

- Lou's car had 5.9 gallons in the 13-gallon tank.

2. Therefore, if he filled the tank, you can calculate the total amount of money Lou spent, by subtracting 13 gallons and 5.9 gallons and multiplying the result by $3.80.

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1 year 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

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1 year ago

Write the ratio of the first measurement to the second measurement. Compare in inches.

GarryVolchara [31]

Answer:

60 in:9 in 20 in:3 in 6.6666667

Step-by-step explanation:

5 ft needs to be in inches, so multiply by 12 (inches per foot) ten you can compare.

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3 years ago

Read 2 more answers