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2 years ago

Someone help for #36 please

Mathematics

1 answer:

motikmotik2 years ago

5 0

Looks like it may be asking you to convert it to a fraction or percent. 7/20 or .35

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What number is 7 units to the left of -1? a.6 b.-6 c.-8 d.8

drek231 [11]

1 unit to the left of -1 on the number line is -2.

Thus, 7 units to the left of -1 is -8.

The appropriate choice is ...

... c. -8

6 0

2 years ago

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1/5 divided by 5/8= Please help me !!

Neporo4naja [7]

Answer:

8/ 25

Step-by-step explanation:

hope it helps!

.....

5 0

3 years ago

Graph the function f(x) = -1/4 x - 2 just tell me the points

cupoosta [38]

Two points are (0,-2) and (400,-102).

8 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

Please help me I need help NO LINKS

GREYUIT [131]

Answer:

I'd say A is the correct answer. There's a chance I'm wrong but I don't think so

4 0

2 years ago

Read 2 more answers