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torisob [31]
2 years ago
5

Evaluate the expression when a=-15 and b=-5. b^2 / a + 5​

Mathematics
1 answer:
DENIUS [597]2 years ago
3 0
Answer: 20/3

Solution:

-5^2/-15 + 5
Determine the sign

5^2/15 + 5
Calculate

25/15 + 5
Simplify

5/3 + 5
Transform the expression

5 + 15/3
Calculate

= 20/3

(But there’s alternative forms too!: 6.6, 6 2/3)
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Find the remainder when f(x) = x3 − 14x2 + 7x − 10 is divided by x − 3. 184 164 −88 −122
Fudgin [204]

Answer:

122

Step-by-step explanation:

For this case we must build a quotient that, when multiplied by the divisor, eliminates the terms of the divide until it reaches the remainder.

It must be fulfilled that:

Dividend = Quotient * Divisor + Remainder

we have that the remainder is 122.

have a good day

5 0
3 years ago
What is the sum of the numbers in the series? 15 + 11 + 7 + . . . + (–129)
babymother [125]
Using Gauss's method
Total number of terms = [15-(-129)]/4+1=36+1=37
Add
S=15+11+7+....-125-129
S=-129-125-...+7+11+15
--------------------------------
2S=-114-114-114...(37 times)
=>
sum=S=(1/2)*(-114)*37=-2109


Using AP, T(n)=15+11+7+....-129
T(n)=19-4n  => T(1)=15, T(37)=-129
S(n)=(1/2)(37)(T(1)+T(37)=(1/2)37(15-129)=2109
3 0
3 years ago
One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if
kow [346]

Answer:

3.6 hours or 3 hours and 36 minutes.

Step-by-step explanation:

If the first pipe can fill the pool in 9 hours that means that in 1 hour it fills \frac{1}{9} of the pool, we use the same logic for the second pipe and conclude that in 1 hour it feels up \frac{1}{6} of the pool. If both were to fill the pool together that means that in 1 hour they would fill...

\frac{1}{9} +\frac{1}{6} = \frac{5}{18} of the pool in 1 hour.

Now to find how many hours it will take divide the pool by the speed with which it is getting filled.

1 / \frac{5}{18} = 3.6 hours

3.6 hours in other words is 3 hours and 36 minutes.

3 0
2 years ago
What is the difference between<br> 7z<br> and z to the power of 7
agasfer [191]

Answer:

7z is the sum of seven 'z's while z to the power of z is the multiplication of z to itself z times.

Step-by-step explanation:

7z is 7 times of z.

7z= z +z +z +z +z +z +z

z⁷ (z to the power of 7) is multiplying z by itself 7 times.

z⁷= z ×z ×z ×z ×z ×z ×z

3 0
2 years ago
What is 91 divided by 3576
valina [46]

Answer:

39.30

Step-by-step explanation:

When you divide you usually don't get a full number, so, when you get a answer that has a long decimal number, you round the two numbers after the decimal point, so, 39.29 would be 39.30. I'm pretty sure that is your answer. If it is wrong I sincerely apologize.

7 0
3 years ago
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