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lbvjy [14]
3 years ago
11

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

Mathematics
1 answer:
WITCHER [35]3 years ago
5 0
<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0, 
</span><span>kf(x) = -x², a= -1<0  
so the answer is </span><span>B.kf(x) </span><span>

</span>
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Find m abc (2x+14) (x+7)
alina1380 [7]
M equals 3x+21 because you add 2x+1x=3x.then you add 14+7=21.then you combine them together to get 3x+21
3 0
2 years ago
Members of the Wide Waters Club pay
vivado [14]

Answer:

The number of times members and non-members will have to rent a boat in order to pay the same amount=20

Step-by-step explanation:

We can have two expressions to show the total cost paid by a member and non-member;

Total cost by member=Cost per summer season+cost per number of times they rent a boat×number of times they rent a boat

where;

Cost per summer season=$105

Cost per number of times they rent a boat=$9.50

Number of times they rent a boat=n

Replacing;

Total cost by a member=105+(9.5×n)=9.5 n+105......equation 1

Total cost by a non-member=Cost per number of times they rent a boat×number of times they rent a boat

where;

Cost per number of times they rent a boat=$14.75

Number of times they rent a boat=n

Replacing;

Total cost by a non-member=(14.75×n)=14.75 n......equation 2

To calculate the number of times they would have to rent a boat in order to pay the same amount, we equate equation 1 to equation 2

9.5 n+105=14.75 n

14.75 n-9.5 n=105

5.25 n=105

n=105/5.25

n=20

The number of times members and non-members will have to rent a boat in order to pay the same amount=20

6 0
3 years ago
PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.
sammy [17]

Answer:

The answer to your question is VW = 2.2

Step-by-step explanation:

Data

angle = 63°

hypotenuse = ?

adjacent side = 1

Process

To solve this problem use trigonometric functions, the trigonometric function that relates the adjacent side and the hypotenuse is cosine.

        cos α = \frac{adjacent side}{hypotenuse}

solve for hypotenuse

        hypotenuse = \frac{adjacent side}{cos \alpha}

Substitution

        hypotenuse = \frac{1}{cos 63}

Simplification

         hypotenuse = \frac{1}{0.45}

Result

         hypotenuse = 2.2

5 0
3 years ago
Read 2 more answers
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Mnenie [13.5K]

Answer:

=14bx2−7x3−4b+2x

Step-by-step explanation:

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3 years ago
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Ratling [72]
Obviously a b c & d.
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