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padilas [110]
3 years ago
12

Which quadratic function has minimum value at x = -b/2a?

Mathematics
1 answer:
tamaranim1 [39]3 years ago
4 0

Answer:

The choose (2)

y=x²+5x+6

Step-by-step explanation:

y=x²+5x+6 —> (–5/2 , –1/4)

y=-3x² + 5 X + 6 —> (5/6, 97/12)

y=-x² + 5x + 6 —> (5/2,49/4)

y = -4 x² + 5x + 6 —> (5/8 , 121/16)

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Evaluate the following function for x = 4: h(x) = 7x + 15.
Lesechka [4]

Answer:

43

Step-by-step explanation:

If x = 4, then plug in an x in the given equation

7(4) + 15 = 43

Therefore h(4) = 43

I hope this helps! :)

7 0
2 years ago
The angle of the semicircle is:<br>a) 120<br>c) 180<br>b)60<br>d)90<br>​
AlexFokin [52]
Since there is no semicircle, the angle is 0.
8 0
3 years ago
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2/5 vs. 3/8 which is bigger/smaller
vova2212 [387]

2/5 is bigger and 3/8 is smaller

6 0
3 years ago
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Country ​A, Country​ B, and Country C won a total of 130 medals. Country B won 10 more medals than Country C. Country A won 38 m
snow_lady [41]

Answer:

Country ​A = 84

Country​ B = 28

Country C = 18

Step-by-step explanation:

Country ​A, Country​ B, and Country C won a total of 130 medals;

A + B + C = 130 ......1

Country B won 10 more medals than Country C;

B = C + 10 .......2

Country A won 38 more medals than the total amount won by the other two;

A = B + C + 38 ........3

Substituting equation 3 to 1;

(B+C+38) + B+C = 130

2B + 2C + 38 = 130 .......4

Substituting equation 2 into 4;

2(C+10) + 2C + 38 = 130

4C + 58 = 130

4C = 130-58 = 72

C = 72/4 = 18

B = C + 10 = 18 + 10 = 28

A = B + C + 38 = 18 + 28 + 38 = 84

Country ​A = 84

Country​ B = 28

Country C = 18

8 0
3 years ago
A rectangle has a width of nine units in the length of 40 units what is the length of a diagonal
shepuryov [24]

Answer:

Applying the Pythagorean theorem, the diagonal is calculated by:

D = sqrt(40^2 + 9^2) = 41

Hope this helps!

:)

5 0
3 years ago
Read 2 more answers
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