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3 years ago

10x-8y=4 -5x plus 3y=-9

Mathematics

1 answer:

KatRina [158]3 years ago

5 0

So what is your question here?

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100 POINTS HELP ASAP Linear Combination

notka56 [123]

Answer:

1) $x=\dfrac12$

2) $n = -3 \ \ \textsf{and} \ \ m = -4$

3) see below

4) A: 0 = 1

Step-by-step explanation:

Question 1

$15-0.5(4x-2)+4x=17$

$\implies 15-2x+1+4x=17$

$\implies 2x+16=17$

$\implies 2x=1$

$\implies x=\dfrac12$

Question 2

$\textsf{rearrange} \ n=m+1 :$

$\implies -m=-n+1$

$\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\$

$\implies0=n+3$

$\implies n=-3$

$\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:$

$\implies m=-3-1$

$\implies m=-4$

Question 3

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

solve for x

Question 4

$3j=k$

$k=3j+1$

$\textsf{rearrange} \ 3j=k :$

$\implies -k=-3j$

$\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:$

$\implies 0=1$

Solution = A

6 0

2 years ago

6 cm 16 cm What is the volume of the cylinder?

jenyasd209 [6]

V = 576 pi cm^3

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h where r is the radius and h is the height

V = pi * (6)^2 * 16

V = pi *36*16

V = 576 pi cm^3

5 0

3 years ago

1/2 of 24? Please helpppppppop

Brut [27]

Answer:

Half of 24 is 12

Step-by-step explanation:

24/2 = 12

6 0

3 years ago

Read 2 more answers

A restaurant employs five people. The two cooks

shusha [124]

Answer:

Step-by-step explanation:

explain the question pls so I can help

6 0

3 years ago

You take out a bagel and place it in the toaster for 5 minutes the toaster uses 1050 watts/hour

Veronika [31]

If the power consumption is linear, then the toaster consumed 1050*(5/60)=87.5 watts.

3 0

3 years ago