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3 years ago

Please help pressed for time

Mathematics

1 answer:

olga2289 [7]3 years ago

8 0

Answer:

1: 1/2 or 1 divided by 2

Step-by-step explanation:

\- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t 1 − x 2 \- = s q r t 2 ( 2 x 2 − 1 ) \- x + s q r t

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Selina is playing a game that uses the spinner below.

MatroZZZ [7]

Answer:

A) 12.5%

B) 50%

C) 50%

Step-by-step explanation:

For A, 7 is one of the 8 possibilities (1/8). 1/8 of 100 is 12.5, so your chance of spinning a 7 is 12.5%

For B, even numbers are 4/8 or 1/2 of your options. 1/2 of 100 is 50, so your chance of spinning an even number is 50%

For C, there are 4 out of 8 numbers that are prime (2,3,5, & 7).

4/8 or 1/2 of 100 is 50, so your chance of spinning a prime number is 50%

hope this helps

4 0

3 years ago

Roy and Sam start solving the equation as follows.

denpristay [2]

Answer:

The correct option is D.

Step-by-step explanation:

The given equation is

$-3x+4=5x-6$

According to the addition property of equality $a=b$ and $a+c=b+c$ are equivalent equations.

Use addition property of equality, add 3x on both the sides.

$-3x+4+3x=5x-6+3x$

$4=8x-6$

Therefore Sam's work is incorrect because he make calculation mistake.

According to the subtraction property of equality $a=b$ and $a-c=b-c$ are equivalent equations.

Use subtraction property of equality, subtract 5x from both the sides.

$-3x+4-5x=5x-6-5x$

$-8x+4=-6$

Therefore Roy's work is correct because he used subtraction property.

Option D is correct.

7 0

3 years ago

Which choice provides the most relevant detail?

aleksklad [387]

Option B, supplement and convert it into gas to use as fuel is the correct answer.

The best option is B because, compared to conventional yoghurt, Greek yoghurt demands up to four times as much milk to make. Greek yoghurt also generates more acid whey, that is challenging to dispose. During the production of yoghurt, a lot of gases are released along with the acid, which farmers have discovered can be utilized as a protein in livestock feed.

Additionally, scientists are attempting to reuse this acid. They are attempting to employ these pricey yet worthwhile conservation techniques. Nutritionists discuss Greek yogurt's advantages. As a result, choice B is correct.

Here is a similar question with an answer related to this question :

about whey: brainly.com/question/9171032

#SPJ4

7 0

2 years ago

A rectangular poster is 10 inches longer than it is wide. If the area of the poster is 171 square inches, find the dimensions of

aivan3 [116]

Length= 19 inches
width= 9 inches

4 0

2 years ago

A marketing researcher wants to find a 96% confidence interval for the mean amount those visitors spend per person per day while

ki77a [65]

Answer:

$n=(\frac{2.054(12)}{4})^2 =37.97 \approx 38$

So then the minimum sample to ensure the condition given is n= 38

Step-by-step explanation:

Notation

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=12$ represent the population standard deviation

n represent the sample size

ME = 4 the margin of error desired

Solution to the problem

When we create a confidence interval for the mean the margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =4 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 96% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=1-0.96 =0.04$ . And in excel we can use this formula to find it:"=-NORM.INV(0.02;0;1)", and we got $z_{\alpha/2}=2.054$ , replacing into formula (b) we got:

$n=(\frac{2.054(12)}{4})^2 =37.97 \approx 38$

So then the minimum sample to ensure the condition given is n= 38

5 0

3 years ago