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Anna35 [415]
3 years ago
14

Use the linear combination method to add the system of equations and create a one-variable equation. x – 5y = 6 –x + 2y = –3 Whi

ch solution is correct? 7y = 3 7y = –9 –3y = –9 –3y = 3
Mathematics
2 answers:
Rashid [163]3 years ago
5 0

Answer:

D

Step-by-step explanation:

i did the assignment.

lozanna [386]3 years ago
3 0

Answer:

D

Step-by-step explanation:

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Please help 10 POINTS!!!
Stella [2.4K]
Y=-1/2x+3



y=-1/2x-5 is parallel:

y=-1/2x-1 is parallel: x+2y=-2

y=2x-4 is perpendicular: -2x+y=-4

y=1/2x+2 is parallel: -x+2y=2
3 0
3 years ago
LMNP is a rectangle. Find the value of x and the length of each diagonal. LN= x and MP= 2x -8
loris [4]

Answer:

<h2>x = 8 (Verified) ✅</h2>

Step-by-step explanation:

If we visualize the figure, we can see that sides LN and MP are going to be parallel and of the same length.

So x = 2x - 8

Subtract x

0 = x - 8

x = 8

Check the answer

8 = 2(8) - 8

8 = 16 - 8

8 = 8 ✅

3 0
3 years ago
Two canoes travel down a river, starting at 9:00 a.M. One canoe travels twice as fast as the other. After 4.5 hours, the canoes
Vedmedyk [2.9K]

Answer:

v_1=3.33 \ miles/hour\\v_2=6.66 \ miles/hour

Step-by-step explanation:

<u>Constant Speed Motion </u>

When the object travels the same distances in the same period of time, the speed is constant and is can be calculated as

\displaystyle v=\frac{x}{t}

where x is the distance and t is the time

There are two canoes traveling at speeds v1 and v2. One of them has twice the speed as the other. Let's say

v_2=2v_1

When t hours have passed, the canoes have traveled x1 and x2 respectively.

x_1=v_1t

x_2=v_2t

Since

v_2=2v_1

Then

x_2=2v_1t

The distance between them is

X=x_2-x_1=2v_1t-v_1t

X=v_1t

That distance is known and equals 11.25 miles, thus

v_1t=15

Solving for v1 and using t=4.5 hours

\displaystyle v_1=\frac{15}{4.5}

v_1=3.33 \ miles/hour

v_2=2\times 3.33

\boxed{v_2=6.66 \ miles/hour}

6 0
3 years ago
F(x) = -x² + 6 <br> Find f(-3).
stepan [7]

Answer:

Step-by-step explanation:

f(-3)= -(-3)^2+6= -9 + 6 = -3

6 0
3 years ago
Read 2 more answers
If i only do 8/9 assignments what will my grade be if it was 100%
Pie

Answer:

Im not sure that really makes sense but I think your grade would be 90% if you did 8/9 or somewhere around that

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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