Write the equation of the line through (5,-4); m = 1 ANSWER ASAP PLEASE!!

Mathematics

1 answer:

77julia77 [94]3 years ago

7 0

Write the equation of the line through (5,-4); m = 1

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Which expression is equivalent to (b^n)^m A. b^n/m B. b^n-m C. b^n•m D. b^n+m

sattari [20]

The answer is c because it is multiplying

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3 years ago

An agronomist hopes that a new fertilizer she has developed will enable grape growers to increase the yield of each grapevine by

Phoenix [80]

Answer:

Yes. Fertilization increases grape yields by more than 5 pounds.

Step-by-step explanation:

Let f-fertilized and o-old(unfertilized)

#First, we use our data to calculate the standard error:

$SE(\bar y_f-\bar y_o)=\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}\\\\=\sqrt{\frac{3.7^2}{44}+\frac{3.4^2}{47}}\\\\=0.7464$

#State both null and alternative hypothesis:

$H_o:\mu_f-\mu_o=0\\\\H_A=\mu_f-\mu_o>0$

#We determine our degrees of freedom as 87.02(using R), we now compute the t-value as:

$t=\frac{\bar y_f-\bar y_o}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{53.4-52.1}{\sqrt{\frac{s_f^2}{n_f}+\frac{s_o^2}{n_o}}}\\\\\\t=\frac{1.3}{0.7464}\\\\t=1.7417\\\\P=P(t_{87.0>1.7417}=1-0.9575=0.0.0425$

Since, the p-value is low, we Reject the null hypothesis. The is enough evidence suggesting that grape yields increase by more than 5 pounds than mean yields of unfertilized grapes.

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4 years ago

Which expression is equivalent to 4 − (−7)? A 7 + 4 B 4 − 7 C −7 − 4 D −4 + 7

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Answer:

7+4

Step-by-step explanation:

When you are subtracting a negative, you are really adding the number. For example, four minus negative seven is equal to four plus seven.

4 - (-7) = 4+7

4+7 = 7+4 (By the commutive property of addition)

Let me know if this helps!

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