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Zigmanuir [339]
2 years ago
6

Find the surface area of the rectangular prism. 3 ft. 9 ft. 5 ft. [? ] sq ft.

Mathematics
1 answer:
dalvyx [7]2 years ago
6 0

Answer:

174 ft^2

Step-by-step explanation:

2(3*9)+2(5*9)+2(5*3)

= 54 + 90 + 30 = 174 ft^2

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What is the greatest common factor of 20x6y+40x4y2−10x5y5 ?
mestny [16]
The greatest common factor: 20x^6y 40x^4y^2 10x^5y^5 is 10x^4y.
20x^6y = 10x^4y*2x^2
40x^4y^2 = 10x^4y*4y
10x^5y^5 = 10x^4y*y^4


8 0
3 years ago
Which number is between 1/6th and 1/4th
bazaltina [42]
1/5...
This question should be relatively easy for a high schooler...
 
3 0
3 years ago
Read 2 more answers
(4 - x)(3+ 2x) = .................... ​
Norma-Jean [14]

Answer:

-2x^2+5x+12

Step-by-step explanation:

(4-x)(3+2x)

12-3x+8x-2x^2

12+5x-2x^2

-2x^2+5x+12

8 0
2 years ago
Easy math!!! Do #13 and #14 (#15 optional)<br> Please show work!
Andru [333]
13. Let A = the amount of money in the given time, P = principal amount; the amount of money you start with, T = time in years, R = interest rate, and N = amount of times interest is compounded each year.

The formula for compound interest is:

A = P(1 +  \frac{R}{N} )^{NT}

Now, we find in the information from the description needed to plug in. P = $1000, R = 7% or 0.07, N = 1 time a year, T = 3 years

A = 1000(1 +  \frac{0.07}{1})^{1(3)}

This simplifies to:

A = 1000(1 + 0.07)^{3}

And again to:

A = 1000(1.07)^{3}

Plug this into a calculator:

A = 1225.043 or ≈1,225.04

14. (x² + 3)(x - 3)(x + 3)

I'm going to do FOIL method on the second and third binomials first and simplify. This gives you:

(x² + 3)(x² - 9)

Then you do the FOIL method again to get:

x⁴ - 9x² + 3x² - 27

And combine like terms for your answer:

x⁴ - 6x² - 27

Number 15 doesn't give you a number to set the polynomial (that results from multiplying those two binomials) equal to so I'm guessing it wants you to set said polynomial equal to zero and solve for x then plug back in. 

If not, your area is found by the equation 3x² - 5x - 12
4 0
3 years ago
T=4st/s-t what is the value of s when t = 5 and T = 40?
Tcecarenko [31]
Why does ever outcome equal 15 I suspect this is a trick question should you get a answer for this let me know btw that's awesome that no matter what it's always 15 even through infinity
3 0
3 years ago
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