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LenKa [72]
2 years ago
7

Identify the solution(s) of

title="y ^{2} - 2y - 8 = 7" alt="y ^{2} - 2y - 8 = 7" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Burka [1]2 years ago
8 0

Answer:

y= 5 and -3

Step-by-step explanation:

subtract 7 from both sides to get y^2-2y-15=0

factor the equation to get (y-5)(y+3)=0

add five on both sides to get y=5 and subtract 3 on both sides to get y=-3

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KA AGAIN ( 2 pdfs)<br> correct answers only
Reil [10]

Answer:

B

Step-by-step explanation:

To find the constant of proportionality between y and x, divide  \frac{y}{x} for all given values of the chart. If you get the same number, then that is the constant. If they are all different numbers, then one does not exist for that function.

Using the method above, you should get:

Chart A = 2/5

Chart B = 1/5 (Correct Answer!)

Chart C = N/A

Hope this helps!

4 0
2 years ago
Read 2 more answers
A meteorite is a solid piece of debris from an asteroid or comet that traveled from outer space to reach Earth's surface. There,
djverab [1.8K]

Answer:

D

Step-by-step explanation:

When iron reacts with air and water, it forms Iron (III) oxide, also known as rust, which is reddish-brown.

7 0
3 years ago
Read 2 more answers
Which graph shows the solution to the inequality -3X-/ &lt;20?
konstantin123 [22]

Answer:

wrong❌❌

question

wrong❌❌

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6 0
2 years ago
Is (x-4) a factor of f(x) = x3 - 2x2 + 5x + 1? Use either the remainder theorem or the factor theorem to explain your reasoning.
Virty [35]

Answer:

(x-4) is not a factor of f(x)=x³-2x²+5x+1

Step-by-step explanation:

Uding the remainder theorem,(x-4) is a factor if the remainder is 0

Plug in x=4

(4)³-2(4)²+5(4)+1

64-32+20+1

64-53

11

7 0
2 years ago
Air-USA has a policy of booking as many as 24 persons on an airplane that can seat only 22. (Past studies have revealed that onl
Alex17521 [72]

Answer:

B. no, it is not low enough

A. no, it is not low enough

Step-by-step explanation:

Given that Air-USA has a policy of booking as many as 24 persons on an airplane that can seat only 22.

Prob for  a random person booked arrive for flight = 0.86

No of persons who books and arrive for flight, X is binomial, since there are two outcomes and each person is independent of the other

The probability that if Air-USA books 24 persons, not enough seats will be available

= P(X=23)+P(x=24)

= 0.1315

B. no, it is not low enough

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

The prob we got is >10% also

A. no, it is not low enough

7 0
3 years ago
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