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Luba_88 [7]
4 years ago
14

tina bought some nail polish and lip gloss at the store. the nail polish cost $4.50 per bottle and lip gloss cost $7 per tube. t

ina bought 9 items and paid $50.50. how many of each item did she buy?
Mathematics
1 answer:
viktelen [127]4 years ago
5 0
5 nail polish and 4 lip gloss

5 x 4.5 =22.5
4 x 7    =28
28+22.5=50.50
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Pls Help <br> Can i make -14/21 into a whole number?
bezimeni [28]

Answer:

no

Step-by-step explanation:

4 0
3 years ago
Find the dimensions of the rectangular box of maximum volume if the sum of the length, width, and height equals 180. (Give exact
Cloud [144]

Step-by-step explanation:

Let the dimension of the box be x, y and z.

Volume of the box V = xyz

Since the box is a rectangular box, the base will be a square of equal length.

V = x²h where h is the height of the box

If the sum of the length, width, and height equals 180, then x+x+h = 180

2x+h = 180

h = 180-2x

Substitute h = 180-2x into the volume of the box

V = x²(180-2x)

V = 180x²-2x³

The box has its maximum volume when \frac{dV}{dx} = 0

\frac{dV}{dx} = 360x-6x^{2}

360x-6x^{2} = 0\\360x = 6x^2\\360 = 6x\\6x = 360\\x = \frac{360}{6}\\ x = 60

Since 2x+h = 180

Substitute x = 60 into the equation ang get the height h

2(60)+h = 180

120+h = 180

h = 180-120

h = 60

Hence the dimension of the rectangular box is 60 by 60 by 60

6 0
4 years ago
PLEASE HELP WILL GIVE BRAINLIEST IF CORRECT
rusak2 [61]

Answer:

To find the simple interest, we multiply 40000 × 0.12 × 10 to get that:

The interest is: $48000.00

Usually now, the interest is added onto the principal to figure some new amount after 10 year(s),

or 40000.00 + 48000.00 = 88000.00. For example:

If you borrowed the $40000.00, you would now owe $88000.00

If you loaned someone $40000.00, you would now be due $88000.00

Step-by-step explanation:

hope this helps!

3 0
3 years ago
Read 2 more answers
Pls send answer and show work pls
I am Lyosha [343]
For question 7, if we add all votes for tiger and eagle, we get

tiger = 14 + 13 + 8 + 5 = 40
eagle = 6 + 7 + 12 + 15 = 40

so choices A and B are wrong.
C is also wrong because fifth and sixth grade votes for eagle are 6 + 7 = 13 and the 5th and 6th grade votes for tiger are 14 + 13 = 27. clearly 5th + 6th like tiger more.

D is the answer for question 7

question 8

rolling a cube does not affect the other cube so it is all independent probability.
cube: 1 2 3 4 5 6
3 even numbers and 3 odd numbers

so probability of rolling an even number is

1/6 + 1/6 + 1/6 = 3/6 = 1/2

multiplying by total number of rolls, she will get even numberss

300 * 1/2 = 150

about 150 time.
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choice C is answer for question 8
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3 years ago
How do I solve this equation?
Degger [83]

Answer:

The range is 0 - 1 for x

Step-by-step explanation:

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