4 years ago

What two numbers multiply to -105 and add to 8

Mathematics

1 answer:

jok3333 [9.3K]4 years ago

5 0

A b=-105
a+b=8
x²+8x-105=0

x²+-7x+15x-105=0
x(x-7)+15(x-7)=0
(x-7)(x+15)=0
a=-7
b=15

You might be interested in

Can you help me with 13

Alenkinab [10]

Answer: it would be c

Step-by-step explanation:

because she wants to make 1 and a half batches so you cut how much oatmeal she needs for one batch and you have your answer she needs 1 and a quarter cup extra

4 0

3 years ago

Read 2 more answers

The students who attend Memorial High School have a wide variety of extra-curricular activities to choose from in the after-scho

ladessa [460]

Answer:

0.16

Step-by-step explanation:

I took the test

6 0

3 years ago

Suppose you go to an ice cream shop which allows you to choose from 7 flavors of ice cream and 5 toppings. if you decide to get

alexdok [17]

The order doesn't matter.

$k$ objects can be chosen out of $n$ objects, when the order doesn't matter, in $C(n,k)=\dfrac{n!}{k!(n-k)!}$ ways.

So, the answer is $C(7,2)\cdot C(5,3)=\dfrac{7!}{2!5!}\cdot\dfrac{5!}{3!2!}=\dfrac{6\cdot7}{2}\cdot\dfrac{4\cdot5}{2}=210$ ways.

8 0

3 years ago

16b = 32 need a lil bitta help

Darina [25.2K]

32/16=2 therefore B=2

5 0

4 years ago

Read 2 more answers

Find the measure of angle ABD

Brut [27]

Answer:

137

Step-by-step explanation:

The sum of all three angles; <ABC, <ABD, and <CBD is equal to 360

now we know <ABC = 118 and

the measure of central angle <CBD is equal to measure of the arc it sees so it's = 105

we are asked to find the m<ABD

118 + 105 + <ABD = 360 add like terms

223 + <ABD = 360 subtract 223 from both sides

m<ABD = 137

5 0

2 years ago