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2 years ago

Please help me with this.

Mathematics

1 answer:

Alexxx [7]2 years ago

7 0

Answer:

That looks very hard and just looking at the picture to figure it out just gives my brain a big hurting spot on it

Step-by-step explanation:

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Drew's father bought 40 liters of gasoline at $.68 per liter. How much did he pay?

Ilya [14]

Multiply amount bought by price:

Total = 40 x 0.68 = $ 27.20

6 0

3 years ago

Read 2 more answers

A hardware store manager reviews data that shows how well a new product is selling over an 8-week period. The data can be modele

lesya692 [45]

Answer:

-13.9 represents the slope

It is the number of units of the product left in stock per week

The negative value shows it decreases per week

Step-by-step explanation:

Here, we want to state what the value -13.9 represents

Generally, the equation of a straight line can be represented by the equation

y = mx + c

where m is the slope

In this case, -13.9 represents the slope of the model

The slope is calculated by dividing a change in y by a change in x

With respect to the question, the slope here represents number of units of the product left in stock per week

4 0

2 years ago

Find the surface area of the shape.

Firlakuza [10]

Answer:

268 m²

Step-by-step explanation:

8x26=208

3x10x2=60

208+60=268

7 0

3 years ago

Find the least squares regression equation using the school year (in number of years after 2000) for the input variable and the

Ad libitum [116K]

Answer-

The least squares regression equation using the school year (in number of years after 2000) for the input variable and the average cost (in thousands of dollars) for the output variable is "y=0.937x+12.765" .

Solution-

The independent variable / input variable= x = Number of years after 2000 ( = year-2000)

The dependent variable / output variable = y = Average cost in thousands of dollars

(The table has been attached herewith.)

To find the regression equation for a group of (x,y) points,

We have to calculate the slope and y-intercept, then we can put those values in the equation y = mx + c ( Slope - Intercept formula)

We know that,

$Slope=m=\frac{N\sum xy -\sum x\sum y}{N\sum x^{2}- (\sum x)^{2}}$

Putting the values from the table,

$m=\frac{(8 \times 1020.206)-(52 \times 150.894)}{(8 \times 3810)-(52^2)}$

( ∵ Instead of 150,894 we have to put 150.894 as we have find the line for year and thousands of dollars )

$\Rightarrow m =\frac{8161.648-7846.488}{3040-2704} =\frac{315.16}{336}=0.937$

Now, for the y-intercept,

$c =\frac{\sum y -m(\sum x)}{N}$

Putting the values,

$c=\frac{150.894-(52 \times 0.937)}{8}=\frac{102.125}{8}=12.765$

Now, putting the values of c and m, in the Slope-Intercept formula,

$y=0.937x+12.765$

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3 years ago

1. 6x + 2y = -12

8090 [49]

Answer:

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Nakshatra w

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I2991992

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3 years ago