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2 years ago

Which of the following is a zero for the function f(x) = (x - 15)(x + 1)(x - 10)?

Mathematics

1 answer:

fomenos2 years ago

7 0

The answer is x=15. Hope this helps

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How do you write 5.44 in words?

wel

Answer:

five and forty-four hundredths

Step-by-step explanation:

3 0

2 years ago

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Find the greatest common factor of 36 and 42

Margaret [11]

The greatest common factor is 6

36: 1, 2, 3, 4, 6, 9, 12, 18, 36
42: 1, 2, 3, 6, 7, 14, 21, 42

Hope this helps : )

3 0

3 years ago

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An alloy consists of nickel, zinc, and copper in the ratio 2:7:9.

docker41 [41]

Zinc = 7/18
Divide 4.9 by 7 = 0.7
Multiply by 18 = 12.6

The answer is 12.6 lbs of alloy. Sorry if I'm wrong

4 0

3 years ago

How do you solve<br> -.8x + 40 - 8x - 35

makvit [3.9K]

Answer:

-16x + 5

Step-by-step explanation:

-8x + 40 -8x - 35

Collect like terms

-8x - 8x + 40 - 35

= - 16x + 5 or 5 - 16x

I hope this was helpful, Please mark as brainliest

6 0

2 years ago

Read 2 more answers

Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help

Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

$x=y-8$ ----> $y=x+8$ ----> equation A

$xy=105$ ----> equation B

substitute equation A in equation B

$x(x+8)=105$

$x^2+8x-105=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+8x-105=0$

$a=1\\b=8\\c=-105$

substitute in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{484}} {2}$

$x=\frac{-8(+/-)22} {2}$

$x=\frac{-8(+)22} {2}=7$

$x=\frac{-8(-)22} {2}=-15$

Remember that the solution cannot be a negative number

The solution is x=7

therefore

Marco's age is 7 years old

4 0

3 years ago