HELPPPP MEEEEE PLEASEEEEEEE

Mathematics

1 answer:

julsineya [31]3 years ago

8 0

Y=4-7x
because it equals = -7
and
y= -5/4x + 2
because it equals = -5/4

You might be interested in

Can someone check and see if I got the right answer on these problems

Ber [7]

(1) is correct. $\mathbf u\cdot\mathbf v=(-14)(0)+(8)(11)=0+88=88$

(2) is correct. I assume you just computed the dot product as above, but another way to do it is to notice that $\mathbf v\cdot\mathbf v=\|\mathbf v\|^2$ (that is, the dot product of a vector with itself is the square of its magnitude). Then since $\|\mathbf v\|=\sqrt{1^2+2^2}=\sqrt5$ , we have $\mathbf v\cdot\mathbf v=\|\mathbf v\|^2=5$ .

(3) is not correct. Since $\mathbf u\cdot\mathbf u=\|\mathbf u\|^2=\sqrt{45}$ , we have $\|\mathbf u\|=\sqrt{\sqrt{45}}$ .

(4) is correct.

$2\mathbf u\cdot\mathbf v=2(\mathbf u\cdot\mathbf v)=2((-3)(1)+(6)(2))=2(-3+12)=2(9)=18$

7 0

3 years ago

What is f(-4) if f(x)=|7x-3|

MrRissso [65]

Substitute the given into the function

f(-4) = |7(-4) - 3|
now solve
f(-4) = |-28 - 3|
f(-4) = | -31|
the absolute value of |-31| is 31
so,
f(-4) = 31

Hope this helps :)

8 0

4 years ago

Read 2 more answers

Pls help me with G and H

igomit [66]

G) 49, H) 60 2/3
If the second one is wrong, u didn't say what to solve it as.

5 0

3 years ago

If a square has an area of 81 square units how long is each side?

Sloan [31]

$A=81 \\ \\ A = s^2 \\ \\ s^2 = 81 \\ \\s=\sqrt{81} \\ \\s= 9 \\ \\ Ansewr : \ each \ side \ is \ 9 \ units \ on \ each \ side$