All categories

3 years ago

What is the missing value; 9 to 7 = 45 to _____

Mathematics

1 answer:

ser-zykov [4K]3 years ago

3 0

Answer:

9 to 7 = 45 to 35..

Step-by-step explanation:

Given function:

9 to 7 = 45 to x

divide 45 by 9
$45*9=5$
if 9·5=45 then x would be 7·5..
$7$ · $5=35$

Therefore, x=35.

You might be interested in

Suppose a certain series of gymnastic moves takes 35 seconds to complete. If a gymnast does that series seven times in a row, ho

Sophie [7]

Answer:

4 minutes 5 seconds

Step-by-step explanation:

Without additional information, we have to assume that one sequence can begin immediately after another, and that each takes the same amount of time. The total time for 7 sequences is 7 times the time for one sequence.

7 × 35 seconds = 245 seconds = 4 minutes 5 seconds

There are 60 seconds in a minute.

5 0

3 years ago

You walk 30 m to the north, then turn 90 degrees to your left and walk another 80 m. How far are you from where you originally s

insens350 [35]

You are 110 m away from where you originally started

4 0

3 years ago

Read 2 more answers

In the past decades there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study

DIA [1.3K]

Answer:

$z=\frac{0.384-0.362}{\sqrt{0.374(1-0.374)(\frac{1}{4276}+\frac{1}{3908})}}=2.055$

The p value can be calculated from the alternative hypothesis with this probability:

$p_v =2*P(Z>2.055)=0.0399$

And the best option for this case would be:

C. between 0.01 and 0.05.

Step-by-step explanation:

Information provided

$X_{1}=1642$ represent the number of smokers from the sample in 1995

$X_{2}=1415$ represent the number of smokers from the sample in 2010

$n_{1}=4276$ sample from 1995

$n_{2}=3908$ sample from 2010

$p_{1}=\frac{1642}{4276}=0.384$ represent the proportion of smokers from the sample in 1995

$p_{2}=\frac{1415}{3908}=0.362$ represent the proportion of smokers from the sample in 2010

$\hat p$ represent the pooled estimate of p

z would represent the statistic

$p_v$ represent the value for the pvalue

System of hypothesis

We want to test the equality of the proportion of smokers and the system of hypothesis are:

Null hypothesis: $p_{1} = p_{2}$

Alternative hypothesis: $p_{1} \neq p_{2}$

The statistic is given by:

$z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

Where $\hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{1642+1415}{4276+3908}=0.374$

Replacing the info given we got:

$z=\frac{0.384-0.362}{\sqrt{0.374(1-0.374)(\frac{1}{4276}+\frac{1}{3908})}}=2.055$

The p value can be calculated from the alternative hypothesis with this probability:

$p_v =2*P(Z>2.055)=0.0399$

And the best option for this case would be:

C. between 0.01 and 0.05.

7 0

2 years ago

Badal has 120 cm 3 of water. He wants to pour it into a rectangular vase that is 4 cm high, 4 cm wide, and 5 cm long. Can he pou

Anestetic [448]

Answer:

volume= 4×4×5

Therefore he can't pour all the water into the vase because the amount of water is 120cm³ whilst the vase is 80. An amount of water as that can't fill the vase

6 0

3 years ago

A line has a slope of 4/3. Through which two points could this line pass?

Aleonysh [2.5K]

The answer to this is C. (28,10) and (22,2).

8 0

2 years ago

Read 2 more answers