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miskamm [114]
3 years ago
11

K-mart buys lego solar systems for $165 and marks them up 3/5 of the price. How much do they sell for?

Mathematics
1 answer:
evablogger [386]3 years ago
7 0
They would sell, for 99 dollars.
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What is /frac{3}{125} of 1875t
barxatty [35]

\dfrac{3}{125} \times 1875t =

= \dfrac{3 \times 1875}{125} t

= 3 \times 15 \times t

= 45t

7 0
3 years ago
which of the following equations is the equation of a suitable line of best fit for the data given below {(45,18), (62,13), (72,
Nuetrik [128]

Sort the data by x:

(26,31),(29,28), (33,25), (38,21),(45,18),(49,17),(55,15), (62,13),(64,13), (72,11), (92,9)}

That look like an obvious decreasing trend. From the first and last point we get a slope of (9-31)/(92-26) = -1/3 and a y intercept of 31 - (-1/3)26 = 39.67.

That's pretty close to Choice d y=-3/10x+35

Answer: d

5 0
3 years ago
Β<img src="https://tex.z-dn.net/?f=%20%5Cint%5Climits%5Ea_b%20%7Bx%7D%20%5C%2C%20dx%20" id="TexFormula1" title=" \int\limits^a_b
4vir4ik [10]
Hint:-   integral of x is x^2 / 2
5 0
3 years ago
Estimate the rate of change of the graphed function over the interval -4 &lt;_ x &lt;_ 0
dezoksy [38]

Answer:

  0.2071

Step-by-step explanation:

It looks like the graph is of the function ...

  y = √(x +8) -2

We know that (-4, 0) is one point on the graph. The other point of interest is at x=0, where y = √8 -2 ≈ 0.8284.

The average rate of change on the interval is then ...

  m = (0.8284 -0)/(0 -(-4)) = 0.2071

The average rate of change on the interval is about 0.2071.

_____

<em>Rougher estimate</em>

The graph goes through the points (-4, 0) and (1, 1), so has a slope of 1/5 = 0.2 on the interval [-4, 1]. We know the graph does not go through (0, 1), so the slope is not as high as 1/4 = 0.25. The curve is concave downward, so the average slope will be higher than 0.2, but we aren't sure how much higher.

A reasonable estimate of the rate of change on the interval is "a little more than 0.2, but less than 0.25."

4 0
2 years ago
Amanda Vehicle has hired Jared Frost as its new president. Terms included the company’s agreeing to pay retirement benefits of $
vampirchik [111]
The amount needed in the account when Frost retires is given by the annuity formula. Compounding is 2 times per year.
.. A = Pi/(n(1 -(1 +r/n)^(-nt)))
.. 17900 = P*.08/(2*(1 -(1 +.08/2)^(-2*12)))
.. 17900 = P*.04/(1 -(1.04^-24))
.. P ≈ 272,920.64

The compound interest formula can be used to find the present value required. 4015 days is 11 years (ignoring leap years), so the amount to deposit can be calculated from
.. A = P*(1 +r/n)^(nt)
.. 272,920.64 = P*(1 +.08/2)^(2*11) = P*1.04^22
.. P ≈ 115,160.33

We don't know about the company's obligation to Robert. To fulfill its obligation to Frost, it must deposit 115,160.33 today.
8 0
2 years ago
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