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sukhopar [10]
2 years ago
8

I need help doing this

Mathematics
1 answer:
uysha [10]2 years ago
7 0
The answer is 3 because x is -7. I hope this helps!
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The ratio of oil to vinegar in a salad dressing is 8:5.How much oil must blend with 7 liters of vinegar for that recipe?
sukhopar [10]
Set it up in a proportion.

8 (oil)/5 (salad dressing) = x/7
cross multiply to get 11.2
7 0
3 years ago
Read 2 more answers
food express is having a special promotion in which customers can win a free gallon of milk if they're receipt has a star on it.
jeka94
We know here 147 out of 156 customers are not won so far
Probability of not winning=147/156
P not wining=0.94
so probability for winning is 1-P not wining
1-0.94= 0.057

if u want an answer is numerator and denominator so u just find 1-147/156<span />
5 0
3 years ago
The Barkers started their trip with a full tank of gas and a total of 39,872 miles on their car. They stopped 4 hours later and
lara [203]

Answer:

27.5 miles per gallon

Step-by-step explanation:

3 0
2 years ago
Plz help!
beks73 [17]

First, you need to find the derivative of this function.  This is done by multiplying the exponent of the variable by the coefficient, and then reducing the exponent by 1.  

f'(x)=3x^2-3

Now, set this function equal to 0 to find x-values of the relative max and min.

0=3x^2-3

0=3(x^2-1)

0=3(x+1)(x-1)

x=-1, 1

To determine which is the max and which is the min, plug in values to f'(x) that are greater than and less than each.  We will use -2, 0, 2.

f'(-2)=3(-2)^2-3=3(4)-3=12-3=9

f'(0)=3(0)^2-3=3(0)-3=0-3=-3

f'(2)=3(2)^2=3(4)-3=12-3=9

We examine the sign changes to determine whether it is a max or a min.  If the sign goes from + to -, then it is a maximum.  If it goes from - to +, it is a minimum.  Therefore, x=-1 is a relative maximum and x=1 is a relative miminum.

To determine the values of the relative max and min, plug in the x-values to f(x).

f(-1)=(-1)^3-3(-1)+1=-1+3+1=3

f(1)=(1)^3-3(1)+1=1-3+1=-1

Hope this helps!!

7 0
3 years ago
I need help QUICK!!!
Flauer [41]

Answer:

87 in³

Step-by-step explanation:

that is the solution above

8 0
1 year ago
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