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3 years ago

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You went to the store and purchased a pair of sneakers, socks and a shirt. The shirt cost 40% of the cost of the sneakers. The s

ocks cost 20% of the shirt. How much is each item if the total amount spent is $118.40?

1 answer:

frozen [14]3 years ago

3 0

Dh Jane sexiness Mx Mx

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Show an equation to find out how many milliliters are in 3.4 L

Allisa [31]

Answer:

3,400 ml

Step-by-step explanation:

Conversion factor: 1000

2) mL = L * 1000

3) mL = 3.4 * 1000

4) mL = 3400

3 0

3 years ago

Fill in the blanks to solve 48 x 8.<br> 48 x 8<br> = 40 eights + 8<br> eights

kozerog [31]

Question is:

Fill in the blanks to solve $\frac{48}{x} =8$ .

Answer:

$x = 6$

Step-by-step explanation:

Given

$\frac{48}{x} =8$

Required

Solve

Multiply both sides by x

$x * \frac{48}{x} =8*x$

$48 =8*x$

Make x the subject

$x = \frac{48}{8}$

$x = 6$

4 0

3 years ago

AfilCa [17]

Answer:

The answer would be D. 5

Step-by-step explanation:

4 0

2 years ago

Find the approximate area between the curve f(x) = -4x² + 32x and on the x-axis on the interval [0,8] using 4 rectangles. Use th

Doss [256]

Split up the interval [0, 8] into 4 equally spaced subintervals:

[0, 2], [2, 4], [4, 6], [6, 8]

Take the right endpoints, which form the arithmetic sequence

$r_i=2+\dfrac{8-0}4(i-1)=2i$

where 1 ≤ <em>i</em> ≤ 4.

Find the values of the function at these endpoints:

$f(r_i)=-4{r_i}^2+32r_i=-16i^2+64i$

The area is given approximately by the Riemann sum,

$\displaystyle\int_0^8f(x)\,\mathrm dx\approx\sum_{i=1}^4f(r_i)\Delta x_i$

where $\Delta x_i=\frac{8-0}4=2$ ; so the area is approximately

$\displaystyle2\sum_{i=1}^4(-16i^2+64i)=-32\sum_{i=1}^4i^2+128\sum_{i=1}^4i=-32\cdot\frac{4\cdot5\cdot9}6+128\cdot\frac{4\cdot5}2=\boxed{320}$

where we use the formulas,

$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$

$\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6$

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3 years ago

A boy jogs 250 meters in 110 seconds. What is his average speed in m/s?

murzikaleks [220]

250m/110s

25m/11s

25/11 m/s

6 0

3 years ago