3 years ago

Someone please help me this is the last question on my homework. I have to write a quadratic equation for this word problem...

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

6 0

Answer: 13 mins

Step-by-step explanation:

You might be interested in

PLEASE HELP ASAP!! URGENT!!

Black_prince [1.1K]

A= 9
B= 11

Make sure to try it

4 0

3 years ago

Find the value of c so that (x-5) is a factor of the polynomial p(x)

liubo4ka [24]

I think the question is

Find the value of c so that (x-5) is a factor of the polynomial

$p(x) = x^3 + 2x^2 + cx + 10$

The other factor is going to be some quadratic. We can say a few things about its coefficients but let's start by saying in general it's

$q(x)= ax^2 + bx + k$

$p(x) = (x-5)q(x)$

$x^3 + 2x^2 + cx + 10 = (x-5)(ax^2 + bx+k) = ax^3 + (b-5a)x^2 + (k-5b)x - 5k$

Equating respective coefficients,

$a=1$

$b-5a = 2$

$k - 5b = c$

$-5k = 10$

so we get

$b = 2 + 5 = 7$

$k = 10/-5 = -2$

$c = k - 5b = 2 - 5(7)= -37$

Answer: -37

Check:

$(x^2 + 7x - 2)(x - 5) = x^3 + 2 x^2 - 37 x + 10\quad\checkmark$

7 0

3 years ago

One day at St. Philip's High School, 1/2 of the pupils walked to school, 1/5 of the pupils came to school by bus, and the remai

Doss [256]

Let P be the number of kids,
we know P>57
take 1-(1/2)-(1/5)=3/10
therefore 57 is 3/10P
3/7P=57
P=57*7/3=133 is the answer
it would be incorrect if we didnt get a positive integer.

7 0

4 years ago

What is the area of this triangle?

fredd [130]

Answer:

i think it's 16

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The expression 15 n + 5 n + 5 Which is another way to write this expression?

bixtya [17]

Answer:

cbdkkdfn

Step-by-step explanation:

bfnsowifnccvl

4 0

3 years ago

Read 2 more answers