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laiz [17]
3 years ago
13

Find the intercepts of each equation:x + y = 82x + y = -3​

Mathematics
2 answers:
agasfer [191]3 years ago
4 0

Answer:

x =  - 11

y = 19

Step-by-step explanation:

x + y = 8 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: ...1 \\ 2x + y = -3 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: ...2

from equation 1, we get

x  =  8 - y

now put x = 8 - y in equation 2

2(8 - y)  + y= -3 \\ 16 - 2y + y =  - 3 \\  - y =  - 3 - 16 \\  - y =  - 19 \\ y = 19

now put y = 19 in equation 1

x + 19= 8 \\ x = 8 - 19 \\  x =  - 11

thus, x = -11 and y = 19

madreJ [45]3 years ago
4 0
X=-11
Y=19
If on a graph it would be {-2x-8[-20,20,-10,10]}
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Which best represents a sampling error?
Nata [24]

Answer:

D because the people at the jazz festival must be biased toward jazz because they are at a jazz festival and must like jazz.

Brainliest please?

4 0
3 years ago
if you subtract 17 from my number and multiply the difference by -6 the results is -138 what is Sarah's number
likoan [24]

Answer:

40

Step-by-step explanation:

let the unknown be y (x is used as times(multiplication) )

(y-17)x-6=-138

add /-6 to both sides

y-17x-6/-6=-138/-6

y-17=23

make y independent/add 17 to both sides

y-17+17=23+17

y=40

or in an easier way

-138/-6 =23

23+17=40

simply reversing the question to get the answer

7 0
3 years ago
Which expression is a prime polynomial?A. X^3-bx^2B. X^2-4x-12C. X^+8xy^3D. X^2-b^3
SOVA2 [1]

A prime polynomial is one that can only be divided by itself and 1. Let's check it option.

A. x³-bx²

This polynomial can be divided by itself, 1, x and x². So it can't be prime.

B. x²-4x-12

This polynomial represents the standard form of a second order polynomial. This means that it is a parabolla. A polynomial of this form can be divided by (x-a) where "a" is the value of its roots. So it can't be prime.

C. x+8xy³

This polynomial can be divided by x, 1 and itself, therefore it can't be a prime.

D. x²-b³

This polynomial can only be divided by 1 and itself. So this is the correct answer.

5 0
2 years ago
Find the equation of a line that contains the points (−3,−1) and (−4,−7). Write the equation in slope-intercept form
kipiarov [429]

Answer:

is the answer

11 upon 4 (11/4)

6 0
3 years ago
Lois makes customised tee-shirts. She advertises and receives orders through her own website. She buys blank tee-shirts for $1 e
Kay [80]

Lois will sell her tee-shirt for $13.20

The percentage profit = \frac{profit}{cost price} × 100

Profit = Selling price - cost price

Cost price is the total amount expended in making the tee-shirts

cost price includes cost of buying blank shirt , cost of fabric paint and amount Lois pay herself

cost of buying blank shirt = $1

cost of fabric paint = $1

amount Lois pay herself = 1\frac{1}{2} x $6

\frac{3}{2} x $6 = $9

Total cost price = $1 + $1 + $9 = $11

0.2 = \frac{profit}{11}

profit = 11 x 0.2 = $2.2

$2.20 = selling price - $11

selling price = $11 + 2.20 = $13.20

To learn more about selling price, please check : brainly.com/question/15533091?referrer=searchResults

3 0
3 years ago
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