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3 years ago

How many solutions does the following system have x+y=3, 2x+2y-5

Mathematics

1 answer:

kap26 [50]3 years ago

7 0

Answer:

Step-by-step explanation:

x + y = 3

2x + 2y = 5

-2x - 2y = -6

2x + 2y = 5

0 not equal to -1

no solution

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20 POINTS FOR 2 QUESTION PLEASE HELP WILL GIVE BRAINLIESTT

Vesnalui [34]

Answer:

8.a 9.acb

Step-by-step explanation:

good luck

8 0

3 years ago

Write an equation for the line of fit for this data in the form y=mx+b where x is latitude and y is temperature.

notka56 [123]

Answer:

$y = -x + 115$

Step-by-step explanation:

Given

See attachment for graph

Required

The equation of best fit

First, we pick two corresponding points on the graph,

We have:

$(x_1,y_1) =(55,60)$

$(x_2,y_2) =(45,70)$

Calculate slope (m)

$m = \frac{y_2 -y_1}{x_2 - x_1}$

This gives:

$m = \frac{70 - 60}{45 - 55}$

$m = \frac{10}{-10}$

$m = -1$

The equation is the calculated using:

$y = m(x - x_1) + y_1$

This gives

$y = -1(x - 55) + 60$

Open bracket

$y = -x + 55 + 60$

$y = -x + 115$

5 0

3 years ago

Town M is 282 feet below sea level. Town R is 679 feet above sea level. How much higher, in feet, is Town R than Town M?

krek1111 [17]

Answer:

397 feet

Step-by-step explanation:

All you have to do is subtract the feet of Town R from Town M. The equation would look like this.

679 - 282 =397

So Town R is 397 feet higher than Town M.

Hope that helps and have a great day!

7 0

3 years ago

Find the value of x.<br> A. 3<br> B. 9<br> C. 0<br> D. 12

GenaCL600 [577]

Answer:

x=3

Step-by-step explanation:

(segment piece) x (segment piece) = (segment piece) x (segment piece)

3x(x+1) = 4x(x)

Divide each side by x

3x(x+1)/x = 4x(x)/x

3(x+1) = 4x

Distribute

3x+3 = 4x

Subtract 3x

3x+3-3x= 4x-3x

3 =x

6 0

3 years ago

Read 2 more answers

Is the ratio 375 miles to 15 gallons compare?

gavmur [86]

Answer: yes

Step-by-step explanation:

375/15=25

6 0

3 years ago