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Artyom0805 [142]

1 year ago

6

Sasha needs to write a division expression for the fraction 9/14 . She is not sure which number goes where. Help Sasha understan

d how to write a division expression from a fraction. pls make answer pretty long, thanks in advance :)

2 answers:

Rasek [7]1 year ago

6 0

(Say I'm righting to sasha)

Hi Sasha! I understand this math is hard,but I'm here to help. 9 goes on top of 14!

If we put 14 on top of 9 it would be an inproper fraction,that's when a fraction is not very easy to work with. Now, we could do 9÷14. :)

Hope dis helps!

~Learning with Natalia~

In-s [12.5K]1 year ago

3 0

If we put 14 on top of 9 it would be an inproper fraction,that's when a fraction is not very easy to work with. Now, we could do 9÷14. :)

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If 100 treats will feed 15 dogs (each dog is given the same number of treats), how many dogs can be fed with 40 treats?

Lisa [10]

Answer: 6 dogs

Step-by-step explanation:

If 100 treats will feed 15 dogs, then that means that the number of treats that each dog requires is:

= 100/15

= 6.67 treats

If 6.67 treats will feed one dog then the number of dogs that will be fed by 40 is:

= 40 / 6.67

= 6 dogs

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2 years ago

How do I calculate percentages?

devlian [24]

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2 years ago

10. Suppose you are a salesperson for the Acme Dynamite Company. Each month you earn $400 plus one sixth of your sales.

Liula [17]

<u>ANS</u>

$15600 worth of explosives.

$3000 = $400x

$3000 - 400 ( 1/6x )

$\\ = ( \frac{1}{6} x)$

= $2600

$\\ = ( \frac{1}{6} x)$

= $

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$x = 15600$

<u>Th</u><u>ank</u> <u>You</u> !!!!

4 0

2 years ago

The following confidence interval for the population proportion for how many U.S. adults do not get enough fruits and vegetables

Zielflug [23.3K]

Answer:

The interval is constructed at 93% confidence.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between these two bounds, divided by 2.

Confidence interval of proportions concepts:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this problem, we have that:

2050 people, so n = 2050.

Lower bound: 0.878

Upper bound: 0.903

$\pi = \frac{0.878 + 0.903}{2} = 0.8905$

$M = \frac{0.903 - 0.878}{2} = 0.0125$

Confidence level:

We have to find z.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.0125 = z\sqrt{\frac{0.8905*0.1095}{2050}}$

$0.0069z = 0.0125$

$z = \frac{0.0125}{0.0069}$

$z = 1.81$

$z = 1.81$ has a pvalue of 0.965.

That is:

$]1 - \frac{\alpha}{2} = 0.965$

$\frac{\alpha}{2} = 0.035$

$\alpha = 2*0.035$

$\alpha = 0.07$

Finally

$1 - \alpha = 1 - 0.07 = 0.93$

The interval is constructed at 93% confidence.

3 0

2 years ago

DIRECTIONS: Road the question and select the best respons

lana66690 [7]

Answer:

C. 510 cm^2

Step-by-step explanation:

Well to find TSA or Total Surface Area,

We need to find the area of al the triangles and rectangles.

Let's start with the 2 rectangles facing forwards.

They both have dimensions of 5*15 and 12*15,

75 + 180

= 255 cm ^2

Now let's do the back rectangle which has dimensions of 15 and 13.

15*13 = 195 cm^2

Now we can do the top and bottom triangles,

Since we don't have height we can use the following formula,

$A = \sqrt{S(S-a)(S-b)(S-c)}$

S is $S = \frac{1}{2} (A+B+C)$

S= 15

Now with s we can plug that in,

$A = \sqrt{15(15-5)(15-13)(15-12)}$

The a b and c are the sides of the triangle.

So let's solve,

15 - 5 = 10

15 - 13 = 2

15 - 12 = 3

10*2*3 = 60

60*15 = 900

$\sqrt{900}$ = 30 cm^2

Since there is 2 triangles with the same dimensions their areas combined is 60 cm^2

60 + 255 + 195 = <u><em>510 cm^2</em></u>

<em>Thus,</em>

<em>the TSA of the right triangular prism is C. 510 cm^2.</em>

<em>Hope this helps :)</em>

7 0

2 years ago

Read 2 more answers