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vagabundo [1.1K]
3 years ago
10

Solve for like terms. -4 + 7(1 - 3m)

Mathematics
1 answer:
stiv31 [10]3 years ago
7 0
-4 + 7(1 - 3m) =
-4 + 7 - 21m = 
3 - 21m
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Find the projection of v on to w if v = ⟨-5,-2⟩ and w = ⟨1,-1⟩
eduard

Answer:

Step-by-step explanation:

\frac{\vec v \bullet \vec w}{||\vec w||}\bullet \vec w

\vec v \bullet \vec w = \bullet = -5+2 = -3

||\vec w ||=\sqrt{2}

Hence, the result will be

\frac{-3\sqrt{2} }{2}

you can put the scalar in to get

8 0
3 years ago
Mr. Shaffer bought a block of fudge that weighed 8 3/4 pounds. He shared 2.45 pounds with his friends. How much does he have lef
Zinaida [17]

Answer:

6.3 or 6 3/10 pounds

Step-by-step explanation:

First you convert 8 3/4 into a decimal.

8 3/4 = 8.75

You then subtract 8.75 and 2.45.

8.75 - 2.45 = 6.3

6.3 as a fraction is 6 3/10

Therefore, he has 6.3 or 6 3/10 pounds of fudge left.

Hope this helps:)

5 0
3 years ago
HELP ME OUT PLEASE I REALLY NEED SOME HELP ON THIS QUESTION PRETTY PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Alexxx [7]
Viewing the two equations (by graphing them), we can see that the y axis is the vertical one and the x axis is the horizontal one. If something were to be reflected over the y axis, it would be flipped around x=0 and the x value of every point would be multiplied by -1. If it was reflected over the x axis (y=0), every y value would be multiplied by -1. Taking two points that have the same absolute values, e.g. (-1, 0) and (1, 0)  (by absolute values I mean that (|-1|, |0|)=(|1|, |0|)=(1, 0)) we can see that -1*-1=1 and 1*-1=-1. Since they are the x values, it is reflected across the y axis - you are correct!


5 0
3 years ago
Keiko has scored 86, 91, 86, 61, and 87 on her previous five tests. what score does she need on her next test so that her averag
Andru [333]
X= grade on next test

Add up all scores, divide by 6 and this equals the average of 84


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add in parentheses

(411 + x)/6= 84
multiply both sides by 6

411 + x= 504
subtract 411 from both sides

x= 93


ANSWER: 93 is needed on the next test to have an average of 84

Hope this helps! :)
8 0
3 years ago
Ratio
Nastasia [14]

honestly I have no idea what the answer is but I need so more points so I decided to do the question

6 0
3 years ago
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