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4 years ago

What is 39/25 as a decimal

Mathematics

1 answer:

atroni [7]4 years ago

6 0

you have to divide 39 and 25

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Complete the square and write the quadratic equation in vertex form please show steps

nasty-shy [4]

Answer:

Square: $(x-10)^{2} -68$

Vertex: (10,-68)

Step-by-step explanation:

5 0

3 years ago

Eddi Din [679]

15 and the error is on step 3

Reasoning:
I’m not certain how they got 1.5 but you basically divide both sides by two, the 2 would be canceled and you would be left with w, divide 30 by 2 and you get w=15, sorry i suck at explaining

5 0

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.

8 0

4 years ago

Carmen borrowed money from her sister. Each month she makes four payments , with an average payment of no more than $ 200 . This

cricket20 [7]

Answer:

$95

Step-by-step explanation:

We are told that Carmen makes a monthly payment of no more than 200 dollars. We then see her going above the 200 dollars so we look to the tens and ones place. We see that we now have 25, 45, and 35 dollars. Add them up and you get 105 dollars. 200-105=95 so your awnser is $95.

7 0

3 years ago

What adds up to get 35 and multiplies to get 300

nirvana33 [79]

15 and 20, because 15+20=35 and 15×20=300

5 0

3 years ago