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miskamm [114]
3 years ago
7

Evaluate the expression 3X plus Z plus 2Y -12 if X equals 3Y equals eight and Z equals five

Mathematics
1 answer:
Sveta_85 [38]3 years ago
7 0

Hey there!

3x + z + 2y - 12

We know this information:

x = 3

y = 8

z = 5

With this information, we’ll just “fill in the blanks” (aka the parts with the exponents)

So, the expression would look like this:

(3 * 3) + 5 + (2 * 8) - 12

Now, we solve (see photo)

Therefore, the answer is 18

Hope this helps you!

God bless ❤️

xXxGolferGirlxXx

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If mary. Has 1234567891012345678910lambs how many lambs does she have in tons
OLga [1]
On average a lamb weighs about 200 pounds,
so 12345678910 multiplied by 200 =<span>2.469135782e+12
</span>2.469135782e+12 divided by 2000 = <span>1234567891 tons</span>
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B is the answer

Step-by-step explanation:

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A person can order a new car with a choice of 13 possible colors, with or without air conditioning, with or without automatic tr
Gnoma [55]

Answer:

208

Step-by-step explanation:

13 options for colours = 13C1 = 13

AND

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AND

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AND

2 options power windows = 2C1 = 2

AND

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3 0
3 years ago
Number 1 and 2 please (25 points)
Elenna [48]

Answers:

1) (3x+2)+(4-5x)=-2x+6

(3+2i)+(4-5i)=7-3i

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

(1-3i)+(2+i)=5-5i

Step-by-step explanation:

In mathematics there are rules related to complex numbers, specifically in the case of addition and multiplication:

<u>Addition: </u>

If we have two complex numbers written in their binomial form, the sum of both will be a complex number whose real part is the sum of the real parts and whose imaginary part is the sum of the imaginary parts (similarly as the sum of two binomials).

For example,  the addition of these two binomials is:

(3x+2)+(4-5x)=3x-5x+2+4=-2x+6

Similarly, the addition of two complex numbers is:

(3+2i)+(4-5i)=3+4+2i-5i=7-3i Here the complex part is the number with the i

<u>Multiplication: </u>

If we have two complex numbers written in their binomial form, the multiplication of both will be the same as the multiplication (product) of two binomials, taking into account that i^{2}=-1.

For example,  the multiplication of these two binomials is:

(1-3x)(2+x)=2+x-6x-3x^{2}=-3x^{2}-5x+2

Similarly, the multiplication of two complex numbers is:

(1-3i)+(2+i)=2+i-6i-3i^{2}=2-5i-3(-1)=5-5i

8 0
3 years ago
Find the surface area of the right prism:
REY [17]

Answer:

A) 200 in²

Step-by-step explanation:

Height of the front rectangle

sqrt(6² + 6²)

6sqrt(2)

3 rectangles + 2 triangles

(6×8) + (6×8) + (8×6sqrt(2)) + (2×½×6×6)

132 + 48sqrt(2)

199.8822509939

8 0
3 years ago
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