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schepotkina [342]
2 years ago
8

Anyone know what the answer is

Mathematics
2 answers:
Molodets [167]2 years ago
8 0

Answer:

the answer is D

Step-by-step explanation:

because of the negative 5x

and u add the powers 2+7=9 because u are multiplying

mars1129 [50]2 years ago
5 0
The correct answer is A
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Distinguish whether the ordered pair (16, -3) is a solution to:
sammy [17]
I believe you should try to plug in the ordered pair to see if the solutions work.

The ordered pair is (x,y) because x is on the x-axis and y is on the y-axis, therefore in (16,-3) the x=16 and y=-3.

Now substitute, meaning plug in those numbers into the equation.
For x+2y=10 would be 16+2(-3)=10
Now you just need to solve one side and see if it equals the other side.
16+2(-3)
First you use order of operations to solve this. PEMDAS. So you multiply 2(-3) first because of the parenthesis and it being multiplication.
16+(-6) and when you have a positive number adding a negative number it’s going backwards of the number line, basically meaning subtraction in a way. Sorry if this confuses you, if you already know how to do negatives and such nevermind this part.
But 16+(-6)=10
So now you look at both side of the equation, does the left side equal to the right? 10=10, so yes. It is a solution for that equation.

Now for the next equation, 7y=-21
Again, plug in the ordered pair (16,-3) into the equation. Remember that it’s (x,y).
There is no x in this equation so no need to worry about that; you only plug in y for this one.
7(-3) Now you multiply. Whenever you multiply a positive number and a negative number, the answer will always be negative. So 7(-3) is -21.
Now look if the left side is equivalent to the right. Does -21=-21? Yes. The ordered pair is a solution.

(16,-3) is a solution to both equations.

Hope this helps!
5 0
3 years ago
An event is three times as likely as its complement. What is the probability of the event?
serg [7]
E = some event
C = complement of event E
Since the events are complementary, this means P(E)+P(C) = 1

We know that P(E) = 3*P(C) since "an event is three times as likely as its complement"

So we can replace P(E) with 3*P(C) and then isolate P(C)
P(E) + P(C) = 1
3*P(C) + P(C) = 1
4*P(C) = 1
P(C) = 1/4

The probability of the complementary event is 1/4
So the probability of the original event is 3/4 (three times 1/4)

Answer: 3/4

note: in decimal form, 3/4 = 0.75
5 0
3 years ago
Hakeem is training for a long-distance race he ran six 1/4 miles on Monday 5 3/4 miles on Wednesday and 5 1/4 miles on Friday ab
Anit [1.1K]
Answer: 6.25 miles
On Friday Hakeem ran 6.25 miles.
6 0
3 years ago
Alice ran 1.24.Round her distance to the nearest tenth of a mile
posledela

Answer:

The answer is 1.2.

Step-by-step explanation:

And I do not know how to explain this

6 0
2 years ago
Read 2 more answers
If b=5 what is b3 answer?<br> A) 15<br> B) 25<br> C) 75 <br> D) 125
Papessa [141]
A is the correct answer
3x5 is 15
6 0
3 years ago
Read 2 more answers
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