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Marysya12 [62]
3 years ago
7

A. 40°B. 50°C. 80 °D. 140°​

Mathematics
2 answers:
Ghella [55]3 years ago
7 0

Answer: A. 40

Step-by-step explanation:

Alexxx [7]3 years ago
7 0
The answer is A. 40
Step by step:
This is the answer because .............
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The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2.Three scores extracted from the te
Luba_88 [7]

Answer:

102

Step-by-step explanation:

We have the mean (m) 128.5 and the standard deviation (sd) 8.2, we must calculate the value of z for each one and determine whether or not it is an outlier:

z = (x - m) / sd

In the first case x = 148:

z = (148 - 128.5) /8.2

z = 2.37

In the second case x = 102:

z = (102 - 128.5) /8.2

z = -3.23

In the first case x = 152:

z = (152 - 128.5) /8.2

z = 2.86

The value of this is usually between -3 and 3, therefore when x is 102 it goes outside the range of the value of z, which means that this is the outlier.

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3 years ago
How to solve 5(x+2)(x-2)
nevsk [136]
The answer is: 5x^2-20
7 0
3 years ago
Please help asap!! BRAINLIEST to best/right answer!
deff fn [24]
Q: What is the value of the upper quartile?

A: C 9


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6 0
3 years ago
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If f(x) = -4x^2 - 6x - 1 and g(x) = -x^2 - 5x + 3, find (f + g)(x).
Flauer [41]

Answer:

-5x^{2}-11x+2

Step-by-step explanation:

-4x^{2} \\-6x-1-x^{2}-5x+3=-5x^{2}-11x+2

7 0
3 years ago
Johnson family took a trip in July. The son wanted to calculate the gas mileage in miles per gallon for his Nissan truck. When h
Nitella [24]

Step-by-step explanation:

Given data

initial mileage=24,033 miles.

cost to fill tank=$83.38

cost per gallon= $3.79

1. capacity of tank=83.38/3.79=22 gallons

remianing gas= 1/4*22= 5.5gal

gas used= 22-5.5= 16.5gal

new mileage= 24,297 miles.

mile covered= 24,297 miles.-24,033 miles.

=264miles

miles per gallon is =264/16.5

=16miles per gallon

8 0
3 years ago
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