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cluponka [151]
3 years ago
13

of 375 musicians at a high school, some play only in the jazz band, some play only for the marching band, and some do both. if 2

50 of them play in the jazz band, and 130 play in both, how many play for the marching band?
Mathematics
1 answer:
Monica [59]3 years ago
5 0
250-130=120
375-120= 255
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Ill mark brainiest please help me!!!!!!!!
IgorC [24]

Answer:

yes , 33^2 + 56^2 = 65^2   and obtuse

Step-by-step explanation:

<h2><u>Question 3</u></h2>

make use of the Pythagoras theorem

which is :

c^2 = a^2 + b^2

where c is the hypotenuse.

now put the values in the equation

65^2 = 56^2 + 33 ^2

the answer is :

<u>yes , 33^2 + 56^2 = 65^2</u>

<u></u>

<h2><u>Question 4</u></h2>

<u />

note if :

c^2 = a^2 + b^2 ----------- right

c^2 < a^2 + b^2------------ acute

c^2 > a^2 + b^2------------- obtuse

hence :

16 + 30 > 38

therefore its : <u>obtuse </u>

4 0
3 years ago
Eight times the sum of a number and six
user100 [1]

Answer:

There is any answer as you choose.

Step-by-step explanation:

There is no equal to so you can choose any number.

3 0
3 years ago
What is the multiplicative rate of change of the function? The table represents an exponential function.
zhannawk [14.2K]

Answer:

  • <u>The multiplicative rate of change of the function is 0.5</u>

Explanation:

The <em>multiplicative rate of change</em> is the ratio between consecutive entries.

Naming r the multiplicative rate of change, if it is constant you get:

  • r = second entry / first entry = third entry / second entry = fourth entry / third entry.

Here:

  • second entry / first entry = 0.125 / 0.25 = 0.5
  • third entry / second entry = 0.0625 / 0.125 = 0.5
  • fourth entry / third entry = 0.03125 / 0.0625 = 0.5

Thus, the multiplicative rate of change is 0.5. It means that you can obtain each entry as the product of the previous entry times 0.5:

  • 0.25 × 0.5 = 0.125
  • 0.125 × 0.5 = 0.0625
  • 0.0625 × 0.5 = 0.03125

In general, exponential functions have constant multiplicative rate of changes.

6 0
2 years ago
Read 2 more answers
How many times does4× 8 go into 12×12 ​
blsea [12.9K]

4x8=32 12x12=144 32 goes into 144 4.5 times

4 0
3 years ago
Listed below is data on profit and market capitalization for a sample of 15 different firms in U.S. Profit is the y variable and
MissTica

Answer:

Step-by-step explanation:

Hello!

You have two study variables:

Dependent variable

Y: Profit of the firm in the U.S.

Independent variable

X: Market capitalization of the firm

a.

See the scatterplot in the attachment.

Looking at the graphic it seems that there is a positive regression between the profit and the market capitalization, meaning that every time the market capitalization of the firm increases, the profit of this firm also increases. But not all the "firms" adjust linearly, so I wouldn't expect the regression to be powerful.

b.

The regression model is E(Yi)= α + βXi

Where the parameters of the model are α and β, these two parameters are to be estimated to estimate the regression equation. The estimator for α is a and the estimator for β is b:

a= Y[bar] - bX[bar]

b= [∑XY-(∑X*∑Y)/n]/[∑X²-(∑X)²/n]

I'll use a statistic software to calculate the estimated regression equation:

^Yi= a + bXi

^Yi= 325.89 + 0.07Xi

c.

You need to predict the value of Y (Profit) given a value of X= 70721.3 (million). To make this prediction you have to use the estimated equation:

^Yi= 325.89 + 0.07Xi

^Yi= 325.89 + 0.07(70721.3)= 5276.381

The predicted profit for a market capitalization value of 70,721.3 is 5276.381 million.

I hope this helps!

6 0
3 years ago
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