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ehidna [41]
3 years ago
11

Solve the following system of equations y=-2x-5 and 2x-4y=0

Mathematics
1 answer:
kifflom [539]3 years ago
7 0

Answer:

x=-2 y=-1

Step-by-step explanation:

all you have to do is substitute -2x-5 for y in the second equation

2x-4(-2x-5)=0

2x+8x+20=0

10x=-20

x=-2

y=-2(-2)-5

y=4-5

y=-1

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PLESE HELP GEOMETERY
nalin [4]

In this problem, you must use SohCahToa which basically means:

Sin - opposite over hypotenuse

Cosine - adjacent over hypotenuse

Tangent - Opposite over hypotenuse


So in this picture we have 4 -which is on the opposite side of x - and a 5 -which is the hypotenuse of the triangle. This means we must use sin.

Using a calculator you put in:

sin^{-1} (\frac{4}{5} )

Your answer is 53.13 degrees

4 0
3 years ago
With a short time remaining in the day a delivery driver has to make deliveries at 5 locations among the 6 locations remaining.
nika2105 [10]
The delivery driver has to make deliveries at 5 locations <span>among the 6 locations. </span>This means the order of the probability is important because the route he will take from A to B is different with A to C.
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6 0
3 years ago
An artist has completed 1/14 of a painting in 2 weeks. At what rate is she working?
joja [24]

Answer:

Rate = 0.035 per weeks

Step-by-step explanation:

Given that,

An artist has completed 1/14 of a painting in 2 weeks.

We need to find the rate at which she is working. Let the rate is R. It can be calculated by dividing part that is completed and time.

R=\dfrac{\dfrac{1}{14}}{2}\\\\R=0.035\ \text{per weeks}

Hence, her rate is 0.035 per weeks.

6 0
2 years ago
HELP ME ASAP PLEASE <br> Solve algebraically: <br> —3e^7x+9 = –12
aniked [119]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
an artist enlarged a drawing she made. the original is 3cm wide and 5cm tall .the artist set the copier zoom button to 120% . wh
gizmo_the_mogwai [7]

For this case we have the following data:

The original dimensions of the drawing are:

  • Width: 3cm
  • Height: 5cm

If the copier zoom is at 120%, we can find the new dimensions of the drawing by making a rule of three:

Width:

3 ----------> 100%

x ----------> 120%

Where x represents the new width of the drawing:

x=\frac{(120*3)}{100}\\x=3.6cm

Long:

5 ----------> 100%

y ----------> 120%

Where y represents the new long of the drawing:

y=\frac{(120*5)}{100}\\y=6cm

Thus, the new dimensions are 3.6 cm wide and 6 cm long

Answer:

the longer dimension of the new drawing is 6cm


6 0
3 years ago
Read 2 more answers
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