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Lunna [17]
3 years ago
8

Evaluate the expression 3x^2+4x^3 when x=4.

Mathematics
1 answer:
larisa [96]3 years ago
6 0

Step-by-step explanation:

304

plug 4 in for x

3(4)^2 + 4(4)^3 = 304

48 + 256 = 304

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The answer to the question above accurate please
SashulF [63]

Answer:

x = <u>132</u> degrees

Step-by-step explanation:

To help explain, lets add some letters to designate those line intersections.

Starting at x, label that intersection O, then go up-right to that intersection and label that P, then go down-right to that intersection and label that Q, then go up-right and name that R, then go down-right and label that S, finally go right to that intersection and label that T.

Angle TRS = 12 degrees because  isosceles triangle so TRS = a = 12 degrees.

Angle RST = 180-12-12 = 156 degrees.

Angle QSR is supplementary to RST so it is 24 degrees.

Angle RQS = 24 degrees because isosceles.

Angle QRS = 180-24-24 = <u>132</u> degrees.

Angle PRQ = 180-12-<u>132</u> = <u>36</u> degrees.

Angle PRQ = <u>36</u> degrees because isosceles.

Angle PQR = 180-<u>36</u>-<u>36</u> = <u>108</u> degrees.

Angle PQO = 180-24-<u>108</u> = <u>48</u> degrees.

Angle POQ = <u>48</u> degrees because isosceles.

Angle x = 180 -<u>48</u> = <u>132</u> degrees because it is supplementary.

3 0
3 years ago
Find the GCF of the monomials: 18x² and 21x²y
Len [333]
It’s b because they both have x squared and are both divisible by 3
3 0
3 years ago
If y = 3x and 2x – 4y = 3, then x=
lozanna [386]

Answer:

x = -0.3

Step-by-step explanation:

You can substitute y in 2x – 4y = 3, to solve for x.

How to solve for x:

2x - 4(3x) = 3 (Simplify)

2x - 12x = 3 (Simplify)

-10x = 3 (Divide by -10)

x = -0.3

6 0
3 years ago
Read 2 more answers
Find the mean of the following numbers; 7 21 2 17 3 14 7 4 9 7 9
Margarita [4]

Answer:

9

Step-by-step explanation:

2,3,4,7,7,7,9,9,14,17,21

21,17,14,9,9,7,7,7,4,3,2

3,7,7,7,9,9,17,21

3 0
3 years ago
Read 2 more answers
Subtract 2w + 4 ​​from​ 3w + 6.
ANEK [815]
X subtracted from y means y-x

2w+4 subtracted from 3w+6= (3w+6)-(2w+4)
don't forgett to diestribute invisible -1

-(2w+4)=-1(2w+4)=-2w-4

so
3w+6-2w-4=
3w-2w+6-4=
1w+2=
w+2
3 0
3 years ago
Read 2 more answers
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