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Misha Larkins [42]
3 years ago
8

I NEED HELP ASAP thank you so much!!

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0
B is correct

good luck
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If x=2y=4z, express
Umnica [9.8K]
x = 4z

2y = 4z

Dividing both sides by two,

y = 2z

OK, part 1.

x+4y+z = 4z + 4(2z) +z = 13z

When z=2 then x+4y+z =13(2)=26

Part 2.

2x+3y+2z= 2(4z) +3(2z) + 2z = 16z

When z=2 then 2x+3y+2z=16(2)=32


8 0
4 years ago
Find all solutions to the equation.
Bess [88]

If the equation is

7\sin^2x-14\sin x+2=-5

then rewrite the equation as

7\sin^2x-14\sin x+7=0

Divide boths sides by 7:

\sin^2x-2\sin x+1=0

Since x^2-2x+1=(x-1)^2, we can factorize this as

(\sin x-1)^2=0

Now solve for <em>x </em>:

\sin x-1=0

\sin x=1

\implies\boxed{x=\dfrac\pi2+2n\pi}

where <em>n</em> is any integer.

If you meant sin(2<em>x</em>) instead, I'm not sure there's a simple way to get a solution...

3 0
3 years ago
The line shown below are parallel if the green line has a slope of -4 where is the slope of the redline
NemiM [27]

Answer:

-4

Step-by-step explanation:

Parallel lines have the same slope

If the green line has a slope of -4, then the red line has a slope of -4

4 0
3 years ago
Read 2 more answers
Carson invested $3,900 in an account paying an interest rate of 2.1% compounded
Schach [20]

Answer:

Try using an interest calculator

Step-by-step explanation:

It's a life saver!

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3 years ago
What is the distance between the points (-5, -9) and (-5,14 )?
netineya [11]

Answer:

-4, 19

Step-by-step explanation:

4 0
3 years ago
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