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3 years ago

Please help me with this math problem (image below)

Mathematics

1 answer:

VashaNatasha [74]3 years ago

6 0

Answer:

Option B.

Step-by-step explanation:

Obvious. <u>Lets explain:</u>

<em>Option A: It's pretty ease to do. You just need 2 triangles to make a parallelogram, and that's that.</em>

<em>Option B: How can you make a rectangle from triangles-???</em>

<em>Option C: You might think I am wrong, but I am right. Get 6 triangles, then plato, you have a whole hexagon!</em>

<em>Option D: You probably already know this...but you just need three triangles.</em>

It's correct on every school thing.

<h2>Option B is your answer!</h2>

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What is 9 7/10 divided by 3/5

Pachacha [2.7K]

9 7/10 divided by 3/5 =

97/10 divided by 3/5 =

97/10 * 5/3 =

97/6 = 16 1/6

8 0

3 years ago

Read 2 more answers

Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample

scoundrel [369]

Answer:

$\hat p \sim N( p, \sqrt{\frac{p (1-p)}{n}})$

And we can use the z score formula given by:

$z = \frac{\hat p -\mu_p}{\sigma_p}$

And if we find the parameters we got:

$\mu_p = 0.26$

$\sigma_p = \sqrt{\frac{0.26(1-0.26)}{158}} = 0.0349$

And we can find the z score for the value of 0.4 and we got:

$z = \frac{0.4-0.26}{0.0349}= 4.0119$

And we can find this probability:

$P(z>4.0119) = 1-P(z$

And if we use the normal standard table or excel we got:

$P(z>4.0119) = 1-P(z$

Step-by-step explanation:

For this case we have the following info given:

$p = 0.26$ represent the proportion of the company's orders come from first-time customers

$n=158$ represent the sample size

And we want to find the following probability:

$p(\hat p >0.4)$

And we can use the normal approximation since we have the following two conditions:

1) np = 158*0.26 = 41.08>10

2) n(1-p) = 158*(1-0.26) = 116.92>10

And for this case the distribution for the sample proportion is given by:

$\hat p \sim N( p, \sqrt{\frac{p (1-p)}{n}})$

And we can use the z score formula given by:

$z = \frac{\hat p -\mu_p}{\sigma_p}$

And if we find the parameters we got:

$\mu_p = 0.26$

$\sigma_p = \sqrt{\frac{0.26(1-0.26)}{158}} = 0.0349$

And we can find the z score for the value of 0.4 and we got:

$z = \frac{0.4-0.26}{0.0349}= 4.0119$

And we can find this probability:

$P(z>4.0119) = 1-P(z$

And if we use the normal standard table or excel we got:

$P(z>4.0119) = 1-P(z$

8 0

3 years ago

A small single engine airplane flies 120 miles in 2 hours against the wind (headwind). It then turns around and flies 240 miles

Brums [2.3K]

The speed of the airplane is 90 miles per hour and the speed of the wind is 30 miles per hour.

<h3>Relative Speed Concept;</h3>

When the plane flies against the wind;

Relative Speed = 120 = x -y

When the plane flies with the wind;

Relative Speed = 240 = x +y

Where in;

The speed of the air plane = x
The speed of the wind = y

By solving the equations simultaneously; we have;

x = 180 miles in 2 hours and y = 60 in 2 hours.

Ultimately, the speed of the airplane is 90 miles per hour and the speed of the wind is 30 miles per hour.

Read more on relative Speed;

brainly.com/question/17228388

8 0

3 years ago

A dairy farmer wants to mix a 85% protein supplement and a standard 55% protein ration to make 1200 pounds of a high-grade 80% p

mr_godi [17]

The diary farmer should use 1000 pounds of 85 % protien and 55 % of 200 pounds to make 1200 pounds of a high-grade 80% protein ration

<em><u>Solution:</u></em>

Let the amount of 85 % protien supplement be "x"

Then amount of 55 % protien be (1200 - x)

According to given question,

85 % of "x" protien supplement + 55 % of 1200 - x protien used to get 80 % of 1200 pounds

85 % of x + 55 % of (1200 - x) = 80 % of 1200

$\frac{85}{100} \times x + \frac{55}{100} \times (1200 - x) = \frac{80}{100} \times 1200\\\\0.85x + 0.55(1200 - x) = 960\\\\0.85x + 660 - 0.55x = 960\\\\0.3x = 960 - 660\\\\0.3x = 300\\\\x = 1000$

Pounds of 85 % protien used = 1000 pounds

Then pounds of 55 % protien used = 1200 - 1000 = 200 pounds

Thus he should use 1000 pounds of 85 % protien and 200 pounds of 55 % protien to get 1200 pounds of a high-grade 80% protein ration

7 0

3 years ago

CAN I GET ANY HELP FOR MY HOMEWORK PROBLEMS? :( Solve the system of equations by using the substitution method. <img src="https:

IRINA_888 [86]

Answer:

One solution. (x,y) = (-5,25)

Step-by-step explanation:

y = -5x

x + y = 20

x + (-5x) = 20

-4x = 20

x = -5

y = -5 (-5)

y = 25

8 0

3 years ago