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2 years ago

Can u help me please

Mathematics

1 answer:

Anna11 [10]2 years ago

3 0

Answer:

.50x4+15=x

Step-by-step explanation:

X=17

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A company has an inventory of books that is decreasing at a constant rate. After selling the book for 4 days, they have 8.840 bo

lbvjy [14]

Answer:

The linear equation is:

$B(d) = 9500 - 165d$

Step-by-step explanation:

Linear function:

A linear function has the following format:

$y = mx + b$

In which m is the slope(how much y changes when x changes by 1) and b is the y-intercept(value of y when x = 0).

A company has an inventory of books that is decreasing at a constant rate. Write a linear equation for B in terms of d.

This means that the situation is modeled by a linear function in the following format:

$B(d) = B(0) + md$

After selling the book for 4 days, they have 8.840 books in stock and after selling it for 10 days they have 7,850 books in stock.

This means that B(4) = 8840, B(10) = 7850

Finding the slope:

The slope, having two points, is given by the change in the output(in this case B) divided by the change in the input(in this case d).

We have the points

(4,8840) -> When d = 4, B = 8840

(10,7850) -> When d = 10, B = 7850

Change in B: 7850 - 8840 = -990

Change in d: 10 - 4 = 6

Slope: $m = \frac{-990}{6} = -165$

$B(d) = B(0) - 165d$

(10,7850) -> When d = 10, B = 7850

We use this to find B(0). So

$B(d) = B(0) - 165d$

$7850 = B(0) - 165*10$

$B(0) = 9500$

The linear equation is:

$B(d) = 9500 - 165d$

5 0

3 years ago

Pls help

valina [46]

Answer:

Domain: {1, 2, 3, 4}

Step-by-step explanation:

The domain of the graph (input values) is the number of pizzas which are plotted on the x-axis while the range (output values) is the cost of pizza, plotted on the y-axis (vertical axis)

The domain therefore would consists of each x-coordinate that represent each point on the graph, which are {1, 2, 3, 4}

6 0

3 years ago

Which real-world transformations can be represented by dilations? Select two options. 1. turning a camera to take a photograph 2

Fittoniya [83]

Answer:

3 and 4

Step-by-step explanation:

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size so here reducing a photograph to half its dimensions and enlarging a photograph to double the dimensions is dilation.

=> For dilation, we use a certain scale factor

=> In the 3rd option, scale factor is 1/2

=> In the 4th option, scale factor is 2.

4 0

4 years ago

Among 200 students serveyed 70 are out of state 150 lives in queens and 50 out of state lives in queens find the probability tha

masya89 [10]

Total is 170 so <span><span>170/200</span></span>

4 0

3 years ago

Read 2 more answers

Mario tried to solve an equation step by step.

Zarrin [17]

Answer:

Step 2

Step-by-step explanation:

Mario made a mistake in Step 2 when substracting $\frac{1}{3}$ from $\frac{4}{3}$ . When substracting his result ended up being $\frac{2}{3}$ but it is actually....

$\frac{4}{3} - \frac{1}{3} = \frac{4-1}{3} = \frac{3}{3} = 1$

so the right answer is $q = 1$

5 0

3 years ago