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slega [8]
4 years ago
10

Solve Systems Graphically and graphs pls solve 2 of them at least and three to get brainliest!

Mathematics
1 answer:
rewona [7]4 years ago
3 0

Answer:

43b. (-1, 2)

43a. (1, -3)

36b. Yes: (0,9)

Step-by-step explanation:

<u>43b</u>. x+y=1

       -x+y=3

----------------------

2y=4   > y=2

2+x=1  > x=-1

check:

2(-1)+2=0

0=0

<u>43a</u>. can you figure this one out by yourself and then check it? If you can't I will show my work. The answer is above. :)

<u>36b</u>. y-(0)^2=9

y=9

You might be interested in
Find the value of A in the formula A=1/2h(a+b) when h=6inches, a=12inches, and b=8inches.
Arada [10]

Answer:

<h2>A = 60 in²</h2><h2 />

Step-by-step explanation:

a = 12 in

b = 8 in.

h = 6 in.

<u>plugin values into the formula:</u>

A = 1/2 h(a + b)

A = <u>(12 + 8) </u>  x  6

           2

A = 60 in²

8 0
3 years ago
As an estimation we are told 5 miles is 8 km. <br> Convert 70 miles to km. <br> km
Lena [83]

Answer:  112 km

=====================================================

Work Shown:

(5 miles)/(8 km) = (70 miles)/(x km)

5/8 = 70/x

5*x = 8*70 ... cross multiply

5x = 560

x = 560/5 .... divide both sides by 5

x = 112

According to the given estimation, 70 miles converts to 112 km.

The more accurate conversion is approximately 70 miles = 112.65408 km, so this estimation isn't too far off.

8 0
3 years ago
3x-17=7x-9
Lerok [7]
The answer would be x=-2
4 0
4 years ago
Read 2 more answers
Please help and explain. Thank you!
Anvisha [2.4K]

Answer:

For the first question, the answer is 216 and the equation would become just 6^3

For the second, the answer is 9.

Step-by-step explanation:

When there is a negative exponent, that monomial is brought up to the top of the fraction, (the numerator) so 1/6^-3 becomes 1(6^3)/1, or simplified, just 6^3 since divided by one is the same number and times one is the same number. 6 x 6 x 6 is 216.

When there is a negative exponent outside the equation in a <u>fraction,</u> you need to take the reciprocal  of the fraction. Since it's squared, it will always be positive, so we can ignore the negative sign. 3/1 (or just 3) to the power of 2 is 9. (3 x 3 is 9).

When explained throughly this might be found confusing, but it's a very easy concept to get after a while.

8 0
3 years ago
A number m is more than -7 2/3 or at most -10
frutty [35]

This situation is represented by the following disjoint inequality:

m > -\frac{23}{3} \cup m \leq -10

---------------------------

  • The format of a <u>disjoint inequality</u> is:

x > a \cup x \leq b

  • Which is read as: x is more than a or at most b.

---------------------------

  • In this question, we have number m more than -7\frac{2}{3} = -7 - \frac{2}{3} = -\frac{21}{3} - \frac{2}{3} = -\frac{23}{3} and at most -10, thus, the disjoint inequality that represents this situation is:

m > -\frac{23}{3} \cup m \leq -10

A similar problem is given at brainly.com/question/24528399

4 0
3 years ago
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