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MariettaO [177]
3 years ago
9

Which ordered pair is the solution to the system of equations? {y=x−4−4x+3y=−3 (−9, −13)

Mathematics
1 answer:
Leviafan [203]3 years ago
8 0
The correct answer is (-9, -13)

p.s I already took the test and this was right
hope I helped :)
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-4+(-10t)/0.5+15
ziro4ka [17]
The answer is C because when you divide it out you get 6
6 0
2 years ago
14. Solve: 3x² + 5x – 12 = 0<br>B. 4-3<br>C. 8, - 18​
VARVARA [1.3K]

Answer:

b

Step-by-step explanation:

The equation:

3

x

2

−

5

x

−

12

=

0

is in the form:

a

x

2

+

b

x

+

c

=

0

with  

a

=

3

,  

b

=

−

5

,  

c

=

−

12

The roots are given by the quadratic formula:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

x

=

5

±

√

(

−

5

)

2

−

4

(

3

)

(

−

12

)

2

(

3

)

x

=

5

±

√

25

+

144

6

x

=

5

±

√

169

6

x

=

5

±

13

6

That is:

x

=

5

+

13

6

=

18

6

=

3

 

or  

 

x

=

5

−

13

6

=

−

8

6

=

−

4

3

7 0
3 years ago
A researcher claims that the average annual salary of part-time community college instructors is at least $45,000. To test this
Doss [256]

Answer:

See explanation

Step-by-step explanation:

Solution:-

- The researcher claims :

" the average annual salary of part-time community college instructors is at least $45,000 "

- We will extract the claim made by the researcher to be the Null hypothesis:

                     Null Hypothesis : μ ≥ $45,000

- Any statement otherwise, or point of rejection criteria will denote the Alternate hypothesis that disbands the claim that:

" the average annual salary of part-time community college instructors is less than $45,000 " :

                    Alternate Hypothesis : μ < $45,000

- This type of test with a sample size of n = 25 < 30 and population standard deviation is also not given hints the use t-test statistics and t-critical value reject the claim.

                     Lower tail - one sample - T-test.

6 0
2 years ago
Write the expression in rational exponent form.
MrRa [10]

Determine the power by looking at the numerator of the exponent.

Determine the root by looking at the denominator of the exponent.

Using the base as the radicand, raise the radicand to the power and use the root as the index.

mark as BRAINLIST

7 0
2 years ago
How do you find the ratio of 40:28
ratelena [41]
First reduce it.
10:7 In a sense that is about as far down as you can go
You could however make it 1 3/7 to 1
6 0
3 years ago
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