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3 years ago

What is the solution to the following system of equations?

Mathematics

2 answers:

velikii [3]3 years ago

6 0

Answer:

D). (2,-1)

Step-by-step explanation:

If you insert each x and y coordinate into the equations you will be able to figure out that option A will give you an answer of 10=16 and 1=3 which isn't correct. And so we do this for B and C until D is correct and matches with 6=6 and 3=3.

lisov135 [29]3 years ago

4 0

Answer:

4*2 + 2*-1= 6

2- -1= 3

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Which of the following does not represent a function?

Leona [35]

Answer:

Step-by-step explanation:

D would be the only one that doesn't represent a function because the y-value never changes while the x-value does.

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3 years ago

Reduce any fractions to lowest terms. Don’t round your answer , and don’t use mixed fractions.

kati45 [8]

Answer:

x ≥ -1

Step-by-step explanation:

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3 years ago

Plz help!! if f(x)=1/x and g(x)=x+3, which of the following is the graph of (f*g)(x)

Nataly [62]

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Step-by-step explanation:

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3 years ago

Alabama papas must average 80 on five test . Scores on the first four test were 81 73 84 and 76 what is the lowest score she can

Salsk061 [2.6K]

She has to score at least 86 on her fifth test.

Further explanation:

We will use the average formula to find the fifth value.

Given

$Average\ required=80\\x_1=81\\x_2=73\\x_3=84\\x_4=76\\x_5=?$

We have to find x5

The formula for average is:

$x=\frac{Sum\ of\ values}{Total\ number\ of\ values}\\Here,\\n=5\\So,\\x=\frac{x_1+x_2+x_3+x_4+x_5}{5}\\Putting\ values\\80=\frac{81+73+84+76+x_5}{5}$

$80*5=314+x_5\\400=314+x_5\\x_5=400-314\\x_5=86$

She has to score at least 86 on her fifth test.

Keywords: Average, Word Problems

Learn more about average at:

#LearnwithBrainly

7 0

3 years ago

What is the graph of y=-(x-2)^3-5

natulia [17]

When x=0,
y=-(0-2)^3-5
y=3

When y=0,
(x-2)^3=5
x-2= +/- 5^1/3
x= +/- 5^1/3 +2
x= 3.70997 or x=0.29002

To find the turning point at y, substitute the information that you have found above.

y=-(3.70997-2)^3-5
y=-9.99994

Find the mid-point next as mid-point is also the turning point.

(3.70997+0.29002)÷2=1.999995

Hence, Turning point is (1.999995, 9.99994)

Plot a graph using turning point, y value and the 2-x values.

6 0

3 years ago