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garri49 [273]
3 years ago
15

5. Which of the following is not shown in the

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
8 0
C.
(I’m pretty sure but if I’m wrong I apologize in advance)
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What is the area of this face?
EleoNora [17]
The surface area is the sum of the are of all sides. One side's area is 64 in^2 and since it's a cube, all sides will be the same.
64*6 = 384
The surface area is 384 in^2
6 0
3 years ago
Read 2 more answers
You use a debit card to purchase several t-shirts. Your account balance after buying the t-shirts changes by -$30.60. For each t
omeli [17]

Answer:

the number of T-shirts bought was 5

Step-by-step explanation:

After using a debit card, to purchase several t-shirts. Your account balance after buying the t-shirts changes by -$30.60. The negative sign means there was a total debit of $30.6 after your transactions. For each t-shirt you purchased , the changes in your account balance was -6.12. If you purchased n T-shirts, the changes would be

n × -6.12 = -6.12n. This means a total debit of 6.12n for all the T-shirts you bought. Therefore,

6.12n = 30.6

n = 30.6/6.12 = 5

So the number of T-shirts bought was 5

4 0
3 years ago
For a singing contest in which 42,000 votes were cast the winner received 3/5 of votes. How many votes did the winner not receiv
DENIUS [597]
3/5 of 42000 is 25200 so the amount of people who did not vote is 16800 because the beginning amount of 42000 subtracted from 25200 gives you the final answer If that's confusing the answer is 16800 votes didn't pick the winner
3 0
3 years ago
Bethany,Lauren,Amanda,and David all meet at Family reunion. They are comparing their ages. They have found that Laura is 13 year
bazaltina [42]
The second system of equations, 

\left \{ {{y=\frac{x^2}{2}+\frac{13}{2}x} \atop {y=x^2-27x+129}}
is correct.

We know that Bethany's age is x.  Since Laura is 13 years older, her age is x+13.  The product of their ages is equal to twice Amanda's age, and Amanda's age is y.  This gives us:
x(x+13) = 2y

Using the distributive property, we have 
x²+13x=2y

Dividing everything by 2 (to isolate y), we have:
x²/2 + (13/2)x = y

If we take 20 years off of Bethany's age, it is now represented as x-20.  Taking 20 years off of Laura's age would be (x+13-20) or x-7.  The product of their ages now is equal to David's age; David is 11 years older than Amanda, so his age is y+11.  This gives us:

(x-20)(x-7)=y+11

Multiplying the binomials we have:"
x*x - 7*x - 20*x - 20(-7) = y+11
x²-7x-20x--140=y+11
x²-27x+140=y+11

To isolate y, subtract 11 from both sides:
x²-27x+140-11 = y+11-11
x²-27x+129 = y
7 0
3 years ago
WILL MARK BRAINLIEST ON THE FIRST PERSON !! Giving EXTRA POINTS!! Need the answer right now!!
V125BC [204]

Answer:

I think it's 34.12 inches

Step-by-step explanation:

Use the Phythagorean Theorem, because bisecting a rectangle using the diagonal will produce 2 triangles. The diagonal represents the hypotenuse of the triangle so to solve for it you'd use the formula c² = a²+b²

8 0
3 years ago
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