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Sergeeva-Olga [200]
3 years ago
8

Please help me im so lost​

Mathematics
1 answer:
Zepler [3.9K]3 years ago
5 0

Answer:

<em>5x + 1</em>

Step-by-step explanation:

f(x) = 3x + 2

g(x) = - 2x + 1

<em>f(x) - g(x)</em> = 3x + 2 - ( - 2x + 1 ) = 3x + 2 + 2x - 1 = <em>5x + 1</em>

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Solve and graph each of the following. Show your work to receive full credit.5x – 6 – 8x ≤ 9
alexandr402 [8]

Answer: x> or equal to -5

Step-by-step explanation:

5x – 6 – 8x ≤ 9

Combine the lioe numbers

-3x-6≤ 9

+6 to both sides

-3x≤ 15

Divide by a -3 to both sides

X>or equal to -5

Hope that helps

4 0
2 years ago
A bag has ten marbles in it.Three of them are green one of them is red four of them are yellow and two of them are blue.If one m
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Express the following vector in the form v=v1i+v2j+v3k. 3u - v if u=(4,7,-3) and v=(2,-7,5).3u - v = ____ i + ____ j + _____ k.(
Alecsey [184]

Answer:

<h2><em>5i+14j-7k</em></h2>

Step-by-step explanation:

Given the vectors u = (4,7,-3) and v=(2,-7,5), both vectors are 3-dimensional in nature and can also be rewritten as;

u = 4i+7j-3k and v = 2i-7j+5k

To get 3u-v, we will substitute the given vectors into the expression;

3u-v = 3(4i+7j-3k) -  (2i-7j+5k)

open the parenthesis

3u-v = 12i+21j-9k - 2i + 7j - 5k

collect like terms

3u-v = (12i - 2i) + (21j + 7j) (-9k-5k)

3u - v = 10i+28j-14k

To simplify the answer, we will divide through by 2

3u - v = 10i/2+28j/2-14k/2

<em>3u - v = 5i+14j-7k</em>

<em>Hence the simplified form of the expression is 5i+14j-7k</em>

3 0
2 years ago
Please help on this triangle
Arte-miy333 [17]

Answer:

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Step-by-step explanation:

Since the triangle is right we can use the sine ratio to find h

sin48° = \frac{opposite}{hypotenuse} = \frac{h}{18}

Multiply both sides by 18

18 × sin48° = h

⇒ h = 13.4 cm ( to 1 dec. place )

3 0
3 years ago
Hi so idk what 4×4×7×2×0×9 is ​
professor190 [17]
The answer is 0! Hope this helps!!! :)
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3 years ago
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