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Arte-miy333 [17]
3 years ago
14

Please answer.

Mathematics
2 answers:
Dominik [7]3 years ago
6 0

Answer:

1.5

Step-by-step explanation:

divide 12 by 8 and get 1.5

Nana76 [90]3 years ago
6 0

Answer:

1.5 cause 1.5 x 8 equals 12

You might be interested in
Tom is 8 years older than jane. five yeara ago tom was three times as old as jane. how old is jane now?
Mumz [18]
Jane = x years

Tom = x+8

*5 Years Ago

Jane= x-5

Tom= (x+8)-5=>x+3---------------------------
x+3=3(x-5)<span>x+3=3x-15
3x-x=18
2x=18
x=9 
Jane = 9 years
Tome = 9+8 = 17 years</span>
5 0
3 years ago
HELP PLEASE???!!!!!!!
Fiesta28 [93]

Answer:

<h2>A. (-4, -15)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}y=\dfrac{3}{4}x-12&(1)\\y=-4x-31&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\\dfrac{3}{4}x-12=-4x-31\qquad\text{multiply both sides by 4}\\\\3x-48=-16x-124\qquad\text{add 48 to both sides}\\\\3x=-16x-76\qquad\text{add}\ 16x\ \text{to both sides}\\\\19x=-76\qquad\text{divide both sides by 19}\\\\x=-4\\\\\text{Put it to (2):}\\\\y=-4(-4)-31\\y=16-31\\y=-15

7 0
4 years ago
How many solutions does y=-x^2-4x+7 have
Anastaziya [24]

Answer:

x = sqrt(11 - y) - 2 or x = -sqrt(11 - y) - 2

Step-by-step explanation:

Solve for x:

y = -x^2 - 4 x + 7

y = -x^2 - 4 x + 7 is equivalent to -x^2 - 4 x + 7 = y:

-x^2 - 4 x + 7 = y

Multiply both sides by -1:

x^2 + 4 x - 7 = -y

Add 7 to both sides:

x^2 + 4 x = 7 - y

Add 4 to both sides:

x^2 + 4 x + 4 = 11 - y

Write the left hand side as a square:

(x + 2)^2 = 11 - y

Take the square root of both sides:

x + 2 = sqrt(11 - y) or x + 2 = -sqrt(11 - y)

Subtract 2 from both sides:

x = sqrt(11 - y) - 2 or x + 2 = -sqrt(11 - y)

Subtract 2 from both sides:

Answer: x = sqrt(11 - y) - 2 or x = -sqrt(11 - y) - 2

7 0
3 years ago
Which is the definition of a line segment?
Ne4ueva [31]

Answer:

The answer is d

Step-by-step explanation:

A line segment is a portion of an infinite line separated by two end points

5 0
3 years ago
Helpp i really neeed it
Marizza181 [45]

Answer:

9 hours

Step-by-step explanation:

If she makes $ 20 for each car, washing 9 cars in 3 hours would get $ 180.

So she will need to work 9 hours 180 + 180 + 180, washing 9 cars in 3 hours and would get $ 540. This is enough to buy her phone and she will have a surplus of $ 120.

In summary she must work 9 hours

Hope this helps you, please give me the brainliest

7 0
3 years ago
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