3 years ago

Please help I’ll make you brainliest

Mathematics

1 answer:

asambeis [7]3 years ago

6 0

Answer:

Step-by-step explanation: 3. 12240 watts

4. 101.82 pounds of insecticide.

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Which of the following ratlos is not equivalent to 6:10?

Len [333]

Answer:

24/45 or 9/15

Step-by-step explanation:

none of these is equivalent to 6:10

7 0

3 years ago

If a prison deceased by 372 prisoners each month over one year what the monthy decrease

kozerog [31]

Answer:

31 deaths per month

Step-by-step explanation:

12 months in a year

372 / 12 = 31

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3 years ago

Write as a unit rate. $300 per 6 hours. A 50 hours per dollar B $50 per hour C $0.20 per hour D 0.2 hours per dollar

jonny [76]

The correct answer is B) $50 per hour. Hope this helps!

4 0

3 years ago

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

Can someone please help me lol

Whitepunk [10]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers