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puteri [66]
3 years ago
9

ASAP I REALLY NEED HELP I WILL MAKE BRAINLIEST

Mathematics
1 answer:
svetlana [45]3 years ago
6 0

Answer:

90

Step-by-step explanation:

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James takes two data points from the weight and feed cost data set to calculate a slope, or average rate of change. A hamster we
Lesechka [4]

Answer:

The slope of the line between these two points is 1.50.

Step-by-step explanation:

The general form of the regression line is:

y=mx+c

Here,

<em>y</em> = dependent variable

<em>x</em> = independent variable

<em>m</em> = slope

<em>c</em> = intercept.

The formula to compute slope using two-point method is:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

In this case the dependent variable is the cost per week to feed and independent variable is the weight of the hamster.

The two points are:

(<em>x</em>₁, <em>y</em>₁) = (3, 3.50)

(<em>x</em>₂, <em>y</em>₂) = (4.8, 6.20)

Compute the slope as follows:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

    =\frac{6.20-3.50}{4.8-3}

    =\frac{2.7}{1.8}

    =1.50

Thus, the slope of the line between these two points is 1.50.

6 0
2 years ago
The floor of a NYC subway car measures approximately 12 feet. How many cubic feet of space are there in a subway car?
fiasKO [112]

The cubic feet of space that is in the subway car is the volume of the subway car which is 5,502.

<h3>How many cubic feet of space are there in a subway car?</h3>

The shape of a subway car is in the form of a rectangular prism. In order to determine the cubic feet of space, the volume of the car has to be determined. The formula for the volume of a rectangular prism would be used.

Volume = width x height x length

12 x 51 x 8.5 = 5205

Here is the complete question:

The floor of an NYC subway car measures approximately 51 feet by 8.5 feet. The height of the NYC subway car measures approximately 12 feet. How many cubic feet of space are there in a subway car?

To learn more about the volume of a cuboid, please check: brainly.com/question/26406747

5 0
2 years ago
the first term of an arithmetic sequence is 2 and the sum of the first 15 terms is 292.5. Find the common difference
adelina 88 [10]

Given:

First term of an arithmetic sequence is 2.

Sum of first 15 terms = 292.5

To find:

The common difference.

Solution:

We have,

First term: a=2

Sum of first 15 terms: S_{15}=292.5

The formula of sum of first n terms of an AP is

S_n=\dfrac{n}{2}[2a+(n-1)d]

Where, a is first term and d is common difference.

Putting S_{15}=292.5, n=15 and a=2 in the above formula, we get

292.5=\dfrac{15}{2}[2(2)+(15-1)d]

292.5=\dfrac{15}{2}[4+14d]

292.5=15[2+7d]

Divide both sides by 15.

\dfrac{292.5}{15}=2+7d

19.5=2+7d

19.5-2=7d

17.5=7d

Dividing both sides by 7, we get

\dfrac{17.5}{7}=d

2.5=d

Therefore, the common difference is 2.5.

8 0
3 years ago
Write using exponents. Work from left to right on the grid. 7*7*7*7
amm1812
7^4  the ^ is the exponent symbol if you did not know 
7^4=2,401
8 0
3 years ago
Read 2 more answers
in a given classroom the number of girls is 10 greater than number of boys if the ratio of the number of girls to the number of
Xelga [282]

Answer:

a) 35,  b) 25,  c) 60

Step-by-step explanation:

The number of girls is 10 more than the number of boys, so it's a good thing to choose a variable to represent the number of boys.

Number of boys:  b

Number of girls:  b + 10

Ratio of girls:boys is 7:5, so

\frac{b+10}{b}=\frac{7}{5}

"Cross multiply" to get

7b=5(b+10)\\7b=5b+50\\2b=50\\b=25

There are 25 boys.  There are 10 more girls, so the number of girls is 35, and the total number of students is 60.

That's a packed classroom!

8 0
3 years ago
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