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snow_lady [41]
3 years ago
10

Help me out fast on this question.

Mathematics
1 answer:
Ksju [112]3 years ago
3 0
The third one 15.5x2.3
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5(x + 8) + x + y, given that x = 3 and y = 30
zhuklara [117]

Answer:88

Step-by-step explanation:

Given, x=3 & y=30

So, 5(3+8)+3+30 = 5(11)+3+30 = 88

7 0
3 years ago
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Simplify the expression (3+i)(2+i)
vovikov84 [41]

Answer:

Step-by-step explanation:

hello :

(3+i)(2+i) = 6+3i+2i+i²      but : i² = -1

(3+i)(2+i) = 5+5i

3 0
3 years ago
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Which is a factor of 45x^4−5x^2? Show work.<br><br><br>a. 5x+2 b. 9x−1 c. 6x+5 d. 3x−1
Lelu [443]

Answer:

d. 3x - 1.

Step-by-step explanation:

45x^4−5x^2

The GCF is 5x^2 so we have:

5x^2(9x^2 - 1)

The expression in the parentheses is the difference of 2 squares so:

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

7 0
3 years ago
I need help on this plzzzz help me^^^
s344n2d4d5 [400]
I’m pretty sure it is B or C
6 0
3 years ago
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Find the volume of a box with a height that is 4 inches less than the
lbvjy [14]

Answer:

Volume of the box = x^3 - 4x^2

Step-by-step explanation:

V = L × W × H

Where,

V = volume of the rectangular prism

L= Length

W = Width

H = Height

volume of the rectangular prism = length × width × height

Length = x

Width= length = x

Height = x - 4

V = L × W × H

= x * x * (x - 4)

= x^2 (x - 4)

= x^3 - 4x^2

V = x^3 - 4x^2

Volume of the box = x^3 - 4x^2

8 0
3 years ago
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