Please Help!!!!!!! I am very confused. Can someone explain?

Answer:

This is tricky but I think it is A.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

Given: Dimensions of a rectangular prism are [tex]7.5\,\,inches,3\,\,inches\,,\,11.5\,\,inches[/tex]

To find: total surface area of the rectangular prism in square inches

Solution:

Length of the rectangular prism (l) = 7.5 inches

Breadth of the rectangular prism (b) = 3 inches

Height of the rectangular prism (h) = 11.5 inches

Total surface area of the rectangular prism = 2(lb+bh+hl)

= [tex]2(7.5\times3+3\times11.5+11.5\times7.5 )[/tex]

[tex]2(7.5\times3+3\times11.5+11.5\times7.5 )=2(22.5+34.5+86.25)\\=2(143.25)\\=286.5\,\,square \,\,inches[/tex]

So, option D is correct

Answer:

D! I got it correcttt

Step-by-step explanation:

Answer:

To convert the feet to square feet we have to multiply the length by the width. In which, we should get the answer as well.

Our length is 2ft, since it's a rectangle the other side is 2ft as well.

The width is 3ft, and the other half is 3ft.

So, basically to get the area of the hole, it'd be 3*2=

Which, it's 6sq ft.

Step-by-step explanation:The actual answer is 36. If I am wrong i am sorry ;3

Answer:

1/2 x 4/1 x 2/1 = 4

4th should be 1/6 btw

Step-by-step explanation:

Answer:

Step-by-step explanation:

We'll say the fraction is 4 1/2 so: The length is 6 blocks the width is 2 blocks and we'll say the height is 3 blocks so the length would be 27 the width is 9 and the height is 13 1/2 now 27*9*13 1/2=3280 1/2

(you might have to draw this cube just sayin idk exactly what it wants)

Answer: Answer is C

Step-by-step explanation:

Answer:

c.

Step-by-step explanation:

6x²-7x-5=6x²-10x +3x-5 =( 6x²+3x)-(10x+5)=3x(2x+1)-5(2x+1)=

=(2x+1)(3x-5)

Answer:

The statement is not true. There is an error in the following step:

[tex]\frac{r^{k} * r^{k} }{r^{(k-1)} } = \frac{1 * 1}{1}[/tex]

Step-by-step explanation:

Here is the complete proof:

[tex]r^{k + 1} = r^{k + k - (k - 1)}[/tex]  (because k + k - (k - 1) = k + 1)

[tex]= \frac{r^{k} * r^{k} }{r^{(k-1)} }[/tex] (By laws of exponent)

[tex]= \frac{r^{k} * r^{k} }{r^{k} * r^{-1} } }[/tex]

[tex]= \frac{r^{k} * r^{k} * r^{1} }{r^{k}} }[/tex] (Since the power of r is a negative integer i.e. -1 it will shift to the numerator)

[tex]= r^{k} * r^{1}[/tex]  (We get this equation after canceling out the similar terms in numerator and denominator in previous step)

[tex]= r^{k + 1} \neq 1[/tex] (Provided r > 1 or r < -1)

Answer:

15

Step-by-step explanation:

5 x 3 = 15

Hope this helps ;)

Answer:

$27.98

Step-by-step explanation:

100 - 30 in price %=70%

Price will be 70% of original regular price

$39.98 * .7 = answer

Answer:

Discount is $11.99

Total is now $27.99

Step-by-step explanation:

To find the discount, you find out what 30% is of 39.98, so you multiply

39.98 x 30%(or .3) = 11.994

39.98- 11.99= 27.99

Answer:

  5

Step-by-step explanation:

The amplitude is the coefficient of the cosine function: 5.

Answer:

2[tex]\frac{2}{5}[/tex]

Step-by-step explanation:

Whole numbers can be seen as the number over 1. So, 3 can also be written as [tex]\frac{3}{1}[/tex]. To do [tex]\frac{3}{1}[/tex] x [tex]\frac{4}{5}[/tex] you just multiply across (3x4 and 1x5). Doing so gets you [tex]\frac{12}{5}[/tex]. Since 12 is bigger than 5, you need to find out how many times 5 fits into 12, which is 2 times. This means 2 is the whole number, however you're still left with 2 from the fraction [tex]\frac{12}{5}[/tex], since 2x5 is just 10. You write the remaining 2 as [tex]\frac{2}{5}[/tex], because that's what the original denominator was. The final answer is 2[tex]\frac{2}{5}[/tex].

Answer:

y=9

Step-by-step explanation:

9y=81

divide 9 on both sides

y=9

Answer: It is A certain.

Step-by-step explanation:

Because all the numbers on a six-sided cube is between 1 and 6 so it is certain or 100/100 that the number will land on a number between 1 and 6.

Answer:

First one:

56 + StartFraction 28 over 5 EndFraction = 56 + 5 and three-fifths = 61 and three-fifths

Step-by-step explanation:

7 × 8⅘

7(8) + 7(4/5)

56 + 28/5

56 + 5 + 3/5

61 3/5

Answer:

its A

Step-by-step explanation:

56 + StartFraction 28 over 5 EndFraction = 56 + 5 and three-fifths = 61 and three-fifths

and pls mark me as brainliest if this is correct! :D

Answer:

The pattern is multiplying by 2.

Next three terms: 64,128,256

Step-by-step explanation:

4,8,16,32

To get from 4 to 8 we can multiply by 2.

To get from 8 to 16 we can multiply by 2.

To get from 16 to 32 we can multiply by 2.

So the pattern is multiplying by 2.

To find the next three terms:

32*2=64

64*2=128

128*2=256

Answer:

24

Step-by-step explanation:

Ameeta = 12 math problems.

David =12×3=36 math problems

So 36-12=24

Answer:

12

David's

3 times longer

comparison problem

Step-by-step explanation:

got right on edge

Answer:x=0

Step-by-step explanation:

Answer:

x = 0  

Step-by-step explanation:

Solve for x:

3 (8 x + 8) - 10 x = -6 (x - 4)

3 (8 x + 8) = 24 x + 24:

24 x + 24 - 10 x = -6 (x - 4)

Grouping like terms, 24 x - 10 x + 24 = (-10 x + 24 x) + 24:

(-10 x + 24 x) + 24 = -6 (x - 4)

24 x - 10 x = 14 x:

14 x + 24 = -6 (x - 4)

Expand out terms of the right hand side:

14 x + 24 = 24 - 6 x

Add 6 x to both sides:

14 x + 6 x + 24 = (6 x - 6 x) + 24

6 x - 6 x = 0:

14 x + 6 x + 24 = 24

14 x + 6 x = 20 x:

20 x + 24 = 24

Subtract 24 from both sides:

20 x + (24 - 24) = 24 - 24

24 - 24 = 0:

20 x = 24 - 24

24 - 24 = 0:

20 x = 0

Divide both sides of 20 x = 0 by 20:

(20 x)/20 = 0/20

20/20 = 1:

x = 0/20

0/20 = 0:

Answer:  x = 0

Answer:

C. $290

Step-by-step explanation:

The expected cost is:

E = 1686.50 − (0.057) (24500)

E = 290

Answer:

The range will be 103 because 148-45 = 103

Answer:

1.8

is the median

Answer: 1.8

Step-by-step explanation: 1.8 is the median

Answer: It is 8/10 Because 7+1 equals 8/10 so 7/10+1/10 equals 8/10.

Step-by-step explanation:

D.12

A.26

........................

Answer:

D and A

Step-by-step explanation:

D= 132

A is larger than 132

Answer:

850152.29052

Step-by-step explanation:

278000 rep 32.7%

278000=32.7%, 100% is the total

100%×278000= 278000000÷32.7=850,152.29052

Answer:

3.816

Step-by-step explanation:

4.156-0.34

=4.156-0.34

=4.156 + (-0.34)

= 3.816

hope this helps!!

The given expressions 4.156 - 0.34 simplified form is 3.816.

We have given,

4.156 - 0.34

We have to determine the subtraction

Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol  -

4.156-0.34

=4.156-0.34

=4.156 + (-0.34)

= 3.816

The given expressions 4.156 - 0.34 simplified form is 3.816.

To learn more about the expression visit:

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Answer:

0.000033

Step-by-step explanation:

​​(7.8×10^-5)-(4.5×10^-5)​=

(7.8×0.00001)-(4.5×0.00001)=

0.000078-0.000045=

0.000033

Answer:

0.000033

Step-by-step explanation:

your welcome :)

Answer:

52.74% probability that a randomly selected airfare between these two cities will be between $325 and $425

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

[tex]\mu = 387.20, \sigma = 68.50[/tex]

What is the probability that a randomly selected airfare between these two cities will be between $325 and $425?

This is the pvalue of Z when X = 425 subtracted by the pvalue of Z when X = 325. So

X = 425

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{425 - 387.20}{68.50}[/tex]

[tex]Z = 0.55[/tex]

[tex]Z = 0.55[/tex] has a pvalue of 0.7088

X = 325

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{325 - 387.20}{68.50}[/tex]

[tex]Z = -0.91[/tex]

[tex]Z = -0.91[/tex] has a pvalue of 0.1814

0.7088 - 0.1814 = 0.5274

52.74% probability that a randomly selected airfare between these two cities will be between $325 and $425

Answer:

Option A is correct

Step-by-step explanation:

a^(6/4) = a^(3/2)

b^(4/4) = b

c^(8/4) = c^2

Hope this helps!

:)

Answer:

y = mx+b

Step-by-step explanation:

The slope intercept formula for a line is

y = mx+b  where m is the slope and b is the y intercept

The formula for slope-intercept form is attached below.

I have drawn this on my whiteboard.

In this equation, the m represents slope

and the b represents the y-intercept.

The correct answer is $1.4 million

The insurance company must put $1.4 million into a bank account.

Insurance is a way to manage your risk. When you buy insurance, you purchase protection against unexpected financial losses. The insurance company pays you or someone you choose if something bad happens to you.

Given that, Marcus has a life insurance policy that will pay his family $35,000 per year if he dies. the interest rates are at 2.5%, we need to find the amount of the lump sum that the insurance company must put into a bank account,

Considering that the interest is Simple interest,

So, SI = PRT / 100

Here, the interest is 35000, P we need to find, r = 2.5 and T = 1

35000 = 2.5P/100

3500000 = 2.5P

P = 1400000

P = 1.4 millions

Hence, the insurance company must put $1.4 million into a bank account.

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Answer:

140

Step-by-step explanation:

175% of 80 = 140