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Ierofanga [76]
3 years ago
5

It is in the attachment topic is 7th grade mathematics.

Mathematics
1 answer:
valkas [14]3 years ago
7 0

Answer:

Based on the ratio, she answered 9/30 incorrect. Therefore, she answered 21/30 correct.


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Which are sums of perfect cubes? Check all that apply.
vichka [17]
I think these are the sums of perfect cubes. 

A = (2x²)³ + (3)³
B = (x³)³ + (1)³
D = (x²)³ + (x)³
E = (3x³)³ + (x^4)³

5 0
3 years ago
Evaluate x3 − 2y2 − 3x3 + z4 if x = 3, y = 5, and z = −3.
White raven [17]

Answer:

Step-by-step explanation:

x^3-2y^2-3x^3+z^4

(3)^3-2(5)^3+(-3)^4

-142

8 0
3 years ago
Whats the area of this parallelogram?
mart [117]
The formula for a parallelogram is A(area)= b(base) x h(height)
A= 6cm + 5cm
A= 11cm
A= 11cm x 12cm
A= 132cm

So your answer is 132cm.
7 0
3 years ago
Please help and provide work for help!!
Stella [2.4K]

Answer:

Step-by-step explanation:

1)

Tri. prism:

B = base = 1/2 a c

base = 1/2 * 6 * 6 = 18

volume = Bh

v = 18*4

v = 72

Rec. prism

volume = 4*6*6

v = 144

total volume = 144+72

vt = 212

2)

top rec.  = 2*3*5=30

bot rec. = 4*5*6=120

vt = 30 + 120

vt = 150

7 0
3 years ago
Louisa has $145 saved in her account. She makes $8 an hour at work. How many hours must she work to have at least $320?
musickatia [10]
<span>$145 saved in her account.
</span><span>$8 an hour at work.
</span><span>at least $320

320 - 145 = 175

175 </span>÷ 8 = 21.875

Louisa needs to work about 22 more hrs to have at least $320!
6 0
3 years ago
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