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3 years ago

What’s 12 divided by 8? (Not for a quiz or test, just curious.)

Mathematics

2 answers:

KiRa [710]3 years ago

8 0

Answer:

3\2

Step-by-step explanation:

12 ÷ by 8 nothing more nothing less

murzikaleks [220]3 years ago

5 0

Answer:

1.5

Step-by-step explanation:

12 divided by 8 is 1 1/2 or 1.5

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Someone please helppp

mel-nik [20]

Answer:

k = 5/6

Step-by-step explanation:

First, we can make this have the form of a quadratic function, or ax²+bx+c=0. To do this, we can first subtract 10x from both sides to get

(2k+1)x²-8x=-6

Next, we can add 6 to both sides, resulting in

(2k+1)x²-8x+6 = 0

For a quadratic function of form ax²+bx+c=0, we can see that a=2k+1, b=-8, and c=6. We can then apply the quadratic equation, or

x= (-b ± √(b²-4ac))/(2a) to get our roots to be

x= (8 ± √(64-4(6)(2k+1)))/(2*(2k+1))

= (8 ± √(64-(48k+24)))/(4k+2)

= (8 ± √(40-48k))/(4k+2)

For the roots to be equal, we must have the two roots equal to each other. We can write this as

(8 + √(40-48k))/(4k+2) = (8 - √(40-48k))/(4k+2)

multiply both sides by (4k+2) to remove the denominator

8+√(40-48k) = 8 - √(40-48k)

subtract 8 from both sides to isolate the square roots

√(40-48k) = - √(40-48k)

The only number that is equal to its negative self (and is real) is 0. Therefore, √(40-48k) = - √(40-48k) = 0, so we have

√(40-48k) = 0

square both sides to remove the square root

40-48k = 0

add 48k to both sides to isolate the k and its coefficient

40 = 48k

divide both sides by 48 to isolate k

k = 40/48 = 5/6

7 0

3 years ago

Martina is currently 16 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey. Use this information to

marishachu [46]

<span>m = j + 16
m + 5 = 3j
---
put the system of linear equations into standard form
---
m - j = 16
m - 3j = -5
---
x - y = 16
x - 3y = -5

so now that you have your equations formed, just solve.

x - y = 16 , which means that x = y + 16
substitute for x in the second equation :

Hope this helps

</span>

8 0

3 years ago

Read 2 more answers

Traveling with a speed of 70 mph, a car covered a distance D miles in T hours. Write an equation that relates the distance D thi

irina [24]

Answer:

Part A) $D=70T$