2 years ago

13

Mathematics

1 answer:

goldenfox [79]2 years ago

7 0

Answer:

f(x) = (x + 8)² -6

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If x=-7 is a root of the equation x^2+kx+49=0, then k=

aleksley [76]

Answer:

$k=14$

Step-by-step explanation:

Given:

$x^{2}+kx+49 = 0$

$x = -7$

Substitution can be used to find the value of $k$ :

$(-7)^{2}+(-7)k+49 = 0$

$49-7k+49 = 0$

$98 -7k = 0$

$k = 14$

Hope this helps :)

8 0

3 years ago

Montel can't keep up with the demand for the latest best-selling book. He had to order more copies twice this week. On Monday he

zhannawk [14.2K]

96+264 = 360
360 \ 24 = 15

Therefore he received 15 boxes

6 0

3 years ago

Read 2 more answers

Mr. Smith is 81 years older than his grandson, Victor. In 3 years, Mr. Smith will be four times as old as Victor. How old is Vic

puteri [66]

<h3>Answer :- </h3>

24 years

<h3>Solution :- </h3>

Let the age of victor be X .
and, the age of Mr.Smith be = 81 + x

♧ So, after 3 years = x+81 +3

81 + 3 + x = 4 ( x + 3 )
84 + x = 4x + 12

♧ now grouping the variables and constants together we get,

4x-x=84-12
3x = 72
x = 72/3
x = 24

♧ Thus, Victor's present age is 24 yrs.

Hope it helps ya ~

4 0

3 years ago

Read 2 more answers

Castel and Gabriella are selling pies for a school fundraiser. Customers can buy apple pies and lemon meringue pies. Castel sold

dmitriy555 [2]

One lemon meringue is $14 One apple pie is $4

5 0

3 years ago

F(x) = 3x - 1 and g(x) = x2 -x find (f/g(8) answer choices a)-23/6 b)4 c)-4 d)23/6

Lilit [14]

Answer:

all answer wrong with you

Step-by-step explanation:

f(x)=3x-1

f(8)=3.8-1

=24-1

=23

f(g)=x2-x

f(8)=8.2-2

=16-2

=14

7 0

3 years ago