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2 years ago

Help idk how to do this

Mathematics

1 answer:

ki77a [65]2 years ago

3 0

Answer:

√30

Step-by-step explanation:

We can find the value of x by using Euclidean theorem

x^2 = 3 × 10

if x^ = 30 then x = √30

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Robert mixes yellow and blue paint in the ratio of 3:2 .If he used 12 gallons of yellow paint, how many gallons of blue paint wo

GREYUIT [131]

Answer:

8 gallons

Step-by-step explanation:

3x4=12 (do the same to the opposite) 2x4=8 or 8 gallons of blue paint (to be more specific)

3 0

3 years ago

How many loads of laundry can you wash if you work 3 shifts? express your answer numerically as an integer?

Likurg_2 [28]

Given that number of working shifts = 3

Let number of loads of laundry that you can wash in 1 shift = x

Then number of loads of laundry that you can wash in 3 shift = 3x

Numerical value of the number of loads of laundry that you can wash in 1 shift is not given so it's not possible to convert "3x" into integer.

But whatever be the value say 5 loads of laundry is washed in 1 shift then the answer is given by 3x= 3*5= 15

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2 years ago

5. A scientist believes the concentration of radon gas in the air is greater that the established safe level of 4pci or less. Th

zysi [14]

Complete Question

A scientist believes the concentration of radon gas in the air is greater that the established safe level of 4 pci or less. The scientist tests the composition for 36 days finding an average concentration of 4.4 pci with a sample standard deviation of 1 pci.

a) In testing the scientist's belief, write the appropriate hypotheses:

$H_o:$ Ha:

b) What decision should be made?

Answer:

The null hypothesis is $H_o : \mu \le 4 \ pci$

The alternative hypothesis is $H_a : \mu > 4 \ pci$

There is sufficient evidence to conclude that the concentration of radon gas in the air is greater that the established safe level of 4pci or less

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 4 \ pci$

The sample size $n = 36 \ days$

The sample mean is $\= x = 4.4 \ pci$

The standard deviation is $\sigma = 1 \ pci$

The level of significance is $\alpha = 0.05$

The null hypothesis is $H_o : \mu = 4 \ pci$

The alternative hypothesis is $H_a : \mu > 4 \ pci$

Generally the test statistics is mathematically represented as

$t = \frac{ \= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }$

=> $t = \frac{ 4.4 - 4 }{ \frac{ 1}{ \sqrt{36} } }$

=> $t =2.4$

The p-value is mathematically represented as

$p-value = P(Z > 2.4 )$

From the z-table

$P(Z > 2.4 ) = 0.008$

$p-value =0.008$

So from this obtained value we see that

$p-value < \alpha$ so we reject the null hypothesis

Hence we can conclude that there is sufficient evidence to conclude that the concentration of radon gas in the air is greater that the established safe level of 4pci or less

4 0

3 years ago

Each cube represents 1 cubic inch. What is the volume if the prism?

sashaice [31]

Answer:

12 in³

Step-by-step explanation:

Its made up of 12 (4×3 = 12) cubes of 1 in³ each

So 12 × 1 = 12 in³

6 0

2 years ago

Select the choice that translates the following verbal phrase correctly to algebra:

Mrac [35]

I just did the quiz and it was B. 1/2 n - 16

6 0

2 years ago

Read 2 more answers