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Alinara [238K]
3 years ago
12

Pls helpppp meeeeee :(

Mathematics
1 answer:
Alja [10]3 years ago
7 0

Answer:

Sam

30

Step-by-step explanation:

Sam made a mistake when he said 10^2 -20. The steps should have been:

2n^2-20=2(5)^2-20\\2(25)-20\\50-20=30

You are supposed to square 5 first before multiplying 2. Sam multiplied by 2 first. The correct answer is 30.

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Factor the polynomial 8x² - 24x – 224 completely. A- 4(x + 4)(x-7) B- (4x + 16X(12x – 14) C- 8(x + 4)(x - 7) ht D- 2(4x + 16)(x
alisha [4.7K]

Answer:

The correct answer would be...

c. 8(x + 4)(x - 7)

Hope this helps!

8 0
3 years ago
The Great Pyramid of Giza is a square pyramid located by El Giza, Egypt. The height of the pyramid is currently 455.4 feet. The
jonny [76]
V = a²h/3

Plugging values in we get 8.67X10^7, or 86,700,000
3 0
3 years ago
What is the sum of 1/9, 2/3, and 5/18?<br> A. 19/18<br> B.4/15<br> C. 12/9<br> D. 8/20
kari74 [83]

Answer:

19/18

Step-by-step explanation:

The GCF of 9, 3, and 18 is 18.

Each denominator must be multiplied to 18, and as a result what you multiply in the denominator MUST be multiplied in the numerator.

9 * 2 = 18

1 * 2 = 2

2/18

3 * 6 = 18

6 * 2 = 12

12/18

5/18

Add all three fractions together:

12/18 + 5/18 + 2/18 = 19/18

8 0
3 years ago
Jen walked 1/4 of a mile in 1/2 of an hour. At this rate, how long will it take her to walk 2 miles to the park?
Leto [7]

Answer:

The awnser is C. 4 hours

Step-by-step explanation:

It takes her 2 hours two walk 1 mile so 2*2 is 4

4 0
3 years ago
Please aswer this. Thank you!
mamaluj [8]

Answer:

4 pairs of sock and a little bit of left over change.

Step-by-step explanation:

24.95 + 5.95x = 50

-24.95                -24.95

5.95x=25.05

/5.95   /5.95

x = 4.21

We drop the 0.21 because you cant have 0.21 pairs of socks and we get:

x=4

6 0
2 years ago
Read 2 more answers
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