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Viktor [21]
2 years ago
8

Last year, Liz gave 90 piano performances. This year, she gave 126 piano performances. What is the percent of increase in the an

nual number of performances?
Mathematics
1 answer:
Rashid [163]2 years ago
6 0

Answer:

40%

Step by step explanation is given above

You might be interested in
How to do geometry ex determining angle measures
stiks02 [169]

Answer:

To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.

6 0
3 years ago
Esther wants to have $150,000 in 10 years. She plans to invest $18,000 to start and make yearly payments of $2,500 to the accoun
Bezzdna [24]

Answer:

No

Step-by-step explanation:

She will have made $69,717.37

Please mark brainlest

4 0
2 years ago
HELP ME!!!!!!
sdas [7]

Answer:

A. Minimum = 54, Q1= 69.5, Median = 75, Q3= 106, Maximum = 183

Step-by-step explanation:

Arranging the data set in order from least to greastest we get:

54, 68, 71, 72, 75, 84, 104, 108, 183

From this, we can see that the minimum value is 54 and the maximum value is 183.

Taking a number off one by one on each side of the data set gives the median. In the middle lies 75, so that is our median

To find quartile ranges, split the data set into two where the median lies, then, find the median of those two data sets. The medians will be the values of the upper (Q3) and lower quartiles (Q1).

Q1: 54, 68, 71, 72

68 + 71 = 139
139 ÷ 2 = 69.5

-----

Q3: 84, 104, 108, 183

104 + 108 = 212

212 ÷ 2 = 106

Option A is the only answer with all of these values, therefore, it is the answer.

hope this helps!

3 0
2 years ago
(-11)-((-7)+5<br> help me solve please !!
nekit [7.7K]

Answer:

1 or -9, depends on the problem, see below.

Step-by-step explanation:

-11--7+5

Two negatives make a positive so our new equation is:

-11+7+5

-11+7 is -4, so:

-4+5

And this leaves us with:

1

But I saw there was a parentheses, was it misplaced or was one not added? If one was not ended to the end, then the answer would be different.

(-11)-((-7)+5)

-7+5 is negative 2, so:

-11-(-2)

Once again, two negatives make a positive, so our new equation would be:

-11+2

Which gets us:

-9

6 0
3 years ago
The volume of a soap bubble is 1,203.6 mm^3. Find the radius and diameter of the soap bubble. Use 3.14 for it.​
madreJ [45]

The radius of the soap bubble=6.6 mm

The diameter of the soap bubble=13.2 mm

<u>Step-by-step explanation:</u>

The volume of the soap bubble is given in the problem and using this information we have to calculate its radius and diameter.

volume=1203.6mm^3

The soap bubble is in the shape of a sphere and we can use the equation of the volume of the sphere in this problem.

volume=\frac{4}{3} \pi r^3\\1203.6=\frac{4}{3} \times 3.14\times r^3\\r^3=\frac{1203.6\times 3}{4\times3.14} \\r^3=287.48\\r=6.59 mm

The radius of the soap bubble is 6.6 mm.

diameter=2\times radius\\=2\times 6.6\\13.2 mm

The diameter of the soap bubble is 13.2 mm

8 0
3 years ago
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