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amid [387]
3 years ago
15

Which statement is true about the expressions below?

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
7 0
Is there a attachment because I don’t see anything
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I need some help with this math problem. I've had it explained to me two different ways. If x= -3 then what would be the answer
nadya68 [22]

Answer:

The square root of x will be evaluated first before the addition of 5. Hence (-3)^2 = 9 and 9 +5 = 14, as per your teacher's answer, which is correct. The answer would not be -4.

8 0
3 years ago
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Which expressions are equivalent to 2(2x + 4y + x − 2y)?
Greeley [361]
C should be your answer:))))
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3 years ago
Finding Side Lengths in a Right Triangle<br> What is the value of s?<br> units
zavuch27 [327]

Answer:

hypotenuse=root of( base square + height square)

Step-by-step explanation:

by using pythogorus theorem we can find the side of any right triangle square

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3 years ago
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The mean height of married American women in their early twenties is 64.5 inches and the standard deviation is 2.5 inches. The m
SSSSS [86.1K]

Answer:

The equation for regression line and predicting a husband's height for married couples in their early 20s

Equation: Y'=33.67+0.54*X'

Step-by-step explanation:

r=0.5

x'=64.5

Sx=2.5

y'=68.5

Sy=2.7

General regression line equation is:

Y'=a+b*X'

so the slope of the regression line is the linear correlation coefficient multiplied by the standard deviation for y' divided by the standard deviation for x'

b=r*\frac{S_{y}}{S_{x}}\\b=0.5*\frac{2.7}{2.5}\\b=0.54

The intercept with axis y is the mean of the decreased by the product of the slope and the mean of x

a=y'-b*x'\\a=68.5-0.54*64.5\\a=33.67

The equation regression line then is:

Y'=33.67+0.54*X'

4 0
3 years ago
Jackson stationary sells cards in packs of 11 and envelopes in packs of 13. if kina wants the same number of each,what is the mi
lara [203]
143 cards, you can find this using the LCM or least common multiple. <span />
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3 years ago
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