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mina [271]
3 years ago
8

PLS HELP ITS DUE IN AN HOURR!!!!!

Mathematics
1 answer:
Dvinal [7]3 years ago
3 0
Use math- way its a good app to solve things like these and shows explainstion
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Rajit buys 4 pairs of socks for $2.50 per pair. He pays with a $20 bill.
sveta [45]
2.50 x 4 = 10

20 - 10 = 10

so his change would be $10

5 0
3 years ago
Read 2 more answers
The volume of a 10 ounce box of cheerios is 258.75in3. the length of the box is 4 inches less than the height and the width is 3
Marina86 [1]

Answer:

Height of the box = 11.5 in

Step-by-step explanation:

Let h be the height of the box.

Assuming the volume of the Box is 258.75\ in^3.

Given:

Length = Height - 4 = h - 4

Width = 3 in

We need to find the height of the box.

Solution:

We know that the volume of the box.

Volume = Length\times height\times width

Substitute all given value in above formula.

258.75 = (h-4)\times h\times 3

Rewrite the equation as:

258.75 = 3h(h-4)

258.75 = 3h^2-12h

3h^2-12h-258.75=0

whole equation divided by 3.

h^2-4h-86.25=0

Use quadratic formula with a = 1, b = -4,c=-86.25

h=\frac{-b\pm \sqrt{(b)^{2}-4ac}}{2a}

Put these a, b and c value in above equation.

h=\frac{-(-4)\pm \sqrt{(-4)^{2}-4(1)(-86.25)}}{2(1)}

h=\frac{4\pm \sqrt{16+345}}{2}

h=\frac{4\pm \sqrt{361}}{2}

h=\frac{4\pm 19}{2}

For positive sign

h=\frac{23}{2}  

h = 11.5 in

For negative sign

h=\frac{-15}{2}

h = -7.5

We take positive value of h.

Therefore, the height of the box h = 11.5 in

4 0
2 years ago
Solve the following system of equations by substitution
den301095 [7]

Answer:

c.  (2, -18)

Step-by-step explanation:

y = -5x - 8

y = 3x - 24

3x - 24 = -5x - 8

8x = 16

x = 2

y = 3x - 24

y = 3(2) - 24

y = 6 - 24

y = -18

Answer: c.  (2, -18)

5 0
2 years ago
Please I really need help on this
Ilya [14]

Answer:

40%

Step-by-step explanation:

She has sold 20 items total.

Refrigerators: 8/20 = 40%

Dishwashers: 1/20 = 5%

Dryers: 11/20 = 55%

So there is a 40% chance she will sell another refrigerator! hope this helps!!

3 0
2 years ago
Answer ASAP and I’ll mark you brainliest!
marusya05 [52]

Answer:

The box will hold 594in³

Step-by-step explanation:

volume = length x breadth x height

= 18in x 11in x 3in

= 198 in² x 3in

= 594in³

8 0
2 years ago
Read 2 more answers
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