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3 years ago

What is the 5 times the sum of 7 and 23

Mathematics

1 answer:

sesenic [268]3 years ago

7 0

PEMDAS
5(7+23)
5(30)
150
Hope this helped :)

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Does the function g(x) = -2x2 + 10x + 2 have a minimum or a maximum? Identify its value. +

Hitman42 [59]

Answer:

(5/2, 29/2), and this represents a maximum

Step-by-step explanation:

g(x) = -2x^2 + 10x + 2 is a quadratic function with coefficients {-2, 10, 2}.

The formula for the axis of symmetry (which passes through the vertex) is

x = -b/ [2a]. Here, a = -2; b = 10. Therefore, the axis of symmetry is

x = -10/ [2(-2)] = -10/(-4) = 5/2

Evaluate the function g(x) = -2x^2 + 10x + 2 at x = 5/2 to determine the y-coordinate of the vertex:

g(5/2) = -2(5/2)^2 + 10(5/2) + 2, or

g(5/2) = -2(25/4) + 25 + 2, or

g(5/2) = -25/2 + 27, or

g(5/2) = 14.5

The vertex is thus (5/2, 29/2), and this represents a maximum, because the coefficient of the x^2 term is negative (the curve opens downward).

3 0

3 years ago

saw5 [17]

The above expression is not in its simplest form, and we need to simplify it, that is what asked in the question.

Given equation,

$(9 {x}^{2} - 3x + 7) + ( - 3 {x}^{2} + 2)$

First of all, let's open the parentheses to combine the like terms for simplifying.

$9 {x}^{2} - 3x + 7 - 3 {x}^{2} + 2$

Arranging the like terms, x² with x², x with x and constant terms near to each other.

$9 {x}^{2} - 3 {x}^{2} - 3x + 7 + 2$

Simplying further,

$(9 - 3) {x}^{2} - 3x + 9$

$6 {x}^{2} - 3x + 9$

So, the correct option is C

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8 0

4 years ago

PLEASEEEE HELP!! This is my SECOND time asking :((

adoni [48]

Answer:

Step-by-step explanation:

formula: Y2 - Y1

X2 - X1

-18 = X1

16 = Y1

31 = X2

40 = Y2

40 - 16. = 24

31 - (-18) 49

3 0

3 years ago

Please help ASAP I'll mark Brainliest

IrinaK [193]

I got C but not sure if that is right

6 0

2 years ago

If you answered 18 questions correct on a 30 question test, what is your score?

saveliy_v [14]

Answer:

60%

Step-by-step explanation:

30/10=3

18/3=6

60%

4 0

3 years ago