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2 years ago

Which statement is true?

Mathematics

2 answers:

Alja [10]2 years ago

7 0

Answer:

C is the correct answer.

Lady bird [3.3K]2 years ago

6 0

Answer:

I think D is the answer

Can you please give me Brainliest answer plz

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Grandma has 14 red roses and 7 pink roses how many more red roses than pink does she have explain how you solve the promblem

Helga [31]

She has 7 more roses. you can subtract to find the difference. 14-7=7

4 0

2 years ago

Dr. Ashby is studying the heart rate of adult men. Preliminary data suggests that the standard deviation of heart rates for adul

jok3333 [9.3K]

Answer:

n=42 adult men

Step-by-step explanation:

-The minimum sample size to get a desired margin of error, E is calculated using the formula:

$n\geq( \frac{z\sigma}{E})^2$

-Given that $\sigma=7.5, \ \ E=3\ , \ z_{0.005}=2.58$ , we can substitute to solve for n in the above formula:

$n\geq (\frac{z\sigma}{E})^2\\\\\therefore n=(\frac{z_{\alpha/2}\sigma}{E})^2\\\\=(\frac{2.58\times7.5}{3})^2\\\\=41.6025\approx42$

Hence, the desired minimum sample size, n is 42 adult men.

4 0

2 years ago

2.789 in expanded form

FromTheMoon [43]

It is...........

2.789=2 ones and 7 tenths 8 hundreths 9 thousandths

4 0

2 years ago

I’m having a hard time understanding substitution. Please help!

Vikentia [17]

$b_1=\frac{2A}{h}-b_2$

Step-by-step explanation:

Given expression is;

$A=\frac{h(b_1+b_2)}{2}$

Solving for $b_1$

Multiplying both sides by 2

$2*A=\frac{h(b_1+b_2)}{2}*2\\2A=h(b_1+b_2)$

Dividing both sides by h

$\frac{2A}{h}=\frac{h(b_1+b_2)}{h}\\\frac{2A}{h}=b_1+b_2$

Subtracting $b_2$ from both sides

$\frac{2A}{h}-b_2=b_1+b_2-b_2\\\frac{2A}{h}-b_2=b_1\\b_1=\frac{2A}{h}-b_2$

$b_1=\frac{2A}{h}-b_2$

Keywords: division, subtraction

Learn more about subtraction at:

#LearnwithBrainly

3 0

2 years ago

Which question can be answered by solving the inequality 8d > 200<br> answers above

lubasha [3.4K]

It is the bottom right one because the amount he walked has to be greater than 200

4 0

2 years ago

Read 2 more answers