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Mariana [72]
4 years ago
5

Please help me out!​

Mathematics
2 answers:
alukav5142 [94]4 years ago
8 0

Answer:

i think its no soulution

Step-by-step explanation:

the numbers all cancel out

Zigmanuir [339]4 years ago
8 0

Answer:

A. Infinitely many solutions

Step-by-step explanation:

All you have to do is solve the equation on both side.

-7x + 3 = 2 - 7x + 1 (collect like terms)

-7x + 3 = -7x + 3   ( since they are in the same format on each side it would be infinite solutions because you can pick any number and they will have the same amount on each side)

For example, the number 5

-7(5)  + 3 = -7(5)+ 3

-35 + 3 = -35 + 3

-32 = -32

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An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are norma
Komok [63]

Using the normal distribution, it is found that 0.0329 = 3.29% of the population are considered to be potential leaders.

In a <em>normal distribution</em> with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem:

  • The mean is of 550, hence \mu = 550.
  • The standard deviation is of 125, hence \sigma = 125.

The proportion of the population considered to be potential leaders is <u>1 subtracted by the p-value of Z when X = 780</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{780 - 550}{125}

Z = 1.84

Z = 1.84 has a p-value of 0.9671.

1 - 0.9671 = 0.0329

0.0329 = 3.29% of the population are considered to be potential leaders.

To learn more about the normal distribution, you can take a look at brainly.com/question/24663213

8 0
2 years ago
On his last credit card bill, Frank paid a variable finance rate of 1.5 percent on the first $500, and 1 percent
Nady [450]

Answer:

  • $ 9.91

Explanation:

The amount that Frank paid on his last credit card bill shows how piecewise functions work.

Taking into account that:

  • 1.5 percent = 1.5/100 = 0.015,
  • 1 percent = 1 / 100 = 0.01, and
  • 0.015 × 500 = 7.50,

You can model the amount paid using the piecewise function p(x):

  • p(x)=\left \{ {{0.015x;x\leq500 } \atop {\\}{7.50+0.01(x-500);x>500}} \right.

Thus, your calculation is:

  • x = $741.23

  • p(x) = $7.50 + $ 0.01 × (741.23 - 500) = $ 9.91
3 0
3 years ago
Your lab develops a synthetic compound that is extremely light but very durable. You test it by making a solid ball with a radiu
scZoUnD [109]

Answer:

Pi x r² = 1256.63706144

Step-by-step explanation:

i'm not 100% sure this is right

5 0
3 years ago
A gallon of paint can cover 400 square feet. To the nearest half gallon, find how much paint will be needed to paint two coats o
nlexa [21]
I think that this is right, but I assumed that the ceiling has the same dimensions as the wall you would need 4 gallons for 2 coats.
Work:
20x8= 160 (square feet for 1 wall)
160x5=800 (i assumed there are 4 walls and 1 ceiling)
800x2=1600 (you need 2 coats)
1600/400=4 (each gallon includes 400 square feet)
3 0
3 years ago
Slope intercept form of (5,7) and (6, -3)
Vilka [71]

Answer:

Step-by-step explanation:

y=5x-23

hopefully im right sorry if wrong god bless

5 0
3 years ago
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