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3 years ago

8

The sides of a square are increased by a scale factor of 7. the perimeter of the smaller square is 16ft. what is the perimeter o

f the larger square

1 answer:

Ivenika [448]3 years ago

5 0

I think you need to multiply 16 ft times 7

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Harry ran 80 yards.Approximately how many feet did he run?

mixer [17]

240 feet because there are 3 ft in a yard 3 times 80 is 240

8 0

4 years ago

Read 2 more answers

I need help on this question

Irina18 [472]

To find the surface area of the figure , we need to add the surface area of all the faces

So the surface area of figure = Area of two lateral rectangular faces + Area of two triangular faces + area of base

hence

Surface Area of figure = 2(10*15) + 2( 1/2 * 8 * 12) + (12*15)

= 300 + 96 + 180

= 576 square feet

So correct option is the last one

7 0

3 years ago

A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50% of this population prefers t

ehidna [41]

Answer:

The probability that more than a third of the buyers would prefer brown is 0.8491.

Step-by-step explanation:

This is binomial problem with n=15 and p=0.50.

The binomial formula of probaility is:

P(X=x)= $\frac{n!}{x!(n-x)!} p^{x} (1-p)^{n-x}$

More than a third of the buyers: 15÷3=5

We have to find P(x>5).

P(x>5) = 1 - P(x≤5) = 1 - P(x=0) - P(x=1) - P(x=2) - P(x=3) - P(x=4) - P(x=5)

P(x=0)= $\frac{15!}{0!15!} (0.5)^{0} (1-0.5)^{15}$ =0.00003

P(x=1)= $\frac{15!}{1!14!} (0.5)^{1} (1-0.5)^{14}$ =0.00046

P(x=2)= $\frac{15!}{2!13!} (0.5)^{2} (1-0.5)^{13}$ =0.00320

P(x=3)= $\frac{15!}{3!12!} (0.5)^{3} (1-0.5)^{12}$ =0.01389

P(x=4)= $\frac{15!}{4!11!} (0.5)^{4} (1-0.5)^{11}$ =0.04165

P(x=5)= $\frac{15!}{5!10!} (0.5)^{5} (1-0.5)^{10}$ =0.09164

P(x>5) = 1 - P(x≤5)= 1- 0.00003 - 0.00046 - 0.00320 - 0.01389 - 0.04165 - 0.09164 = 0.8491

4 0

3 years ago

Evaluate the following expression:

Maurinko [17]

Answer:

1

Step-by-step explanation:

${6}^{2} - 7(8 + 6 - {3}^{2})$

Using BODMAS we'll have to solve what is in the bracket first

$= {6}^{2} - 7(14 - 9) \\ = {6}^{2} - 7(5) \\$

Multply -7 by 5 still using the rule of BODMAS

$= {6}^{2} - 35 \\ = 36 - 35 \\ = 1$

<h2><em>OladipoSeun</em><em>♡˖꒰ᵕ༚ᵕ⑅꒱</em></h2>

5 0

3 years ago

Last month, gianni used 6GB out of 8GB included in his cell phone plan. Lamar used 4GB out of 5GB included in his cell phone pla

anygoal [31]

Answer:

Lamar used a greater percent in their data (75%)

Step-by-step explanation:

If Gianni used 6 out of 8 and Lamar 4 out of fie we need to calculate the perecentages:

GIANNI:

If 8GB ---> 100%

6GB ----> X

we do the ecuation and the result is 75%

LAMAR:

If 5GB -----> 100%

4GB ------> X

we do again another ecuation. The result is 80%

solution: Lamar used a greater percent in his data. (80%)

6 0

3 years ago