MATHEMATICS MIDDLE SCHOOL

Solve kx + 12 = 3kx for x.

Answers

Answer 1
Answer:

Answer: x=6/k

Step-by-step explanation:

kx + 12 = 3kx and subtract k from both sides

12=3kx-kx then simplify

12=2kx, now divide both sides by two

12/2=kx simplify again

6=kx divide next

6/k=x finally, switch sides to get x=6/k

Hope this helps, have a BLESSED and wonderful day, as well as a safe one!

-Cutiepatutie ☺❀❤
Answer 2
Answer:

</p><p>kx+12=3kx \n</p><p>12=2kx \n</p><p>x=(12)/(2k) \n</p><p>x=(6)/(k)</p><p>

Hope this helps.

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Marseilles and Algiers lie on the same longitudinal line. Algiers is at 37 degrees latitude and Marseilles is at 47 degrees latitude. If the earth is a sphere of radius 4000 miles, use arc length to find the distance between the cities. [Use pi = 3.14, and round to the nearest mile.]A) 620 miles

B) 680 miles

C) 730 miles

D) 760 miles

Answers

Answer:

b 680

Step-by-step explanation:

Samantha saw two bottles of catchup at the store for the same price one bottle containing fourpence of catchup and the other contain 1.25 quarts of catch-up which bottle was better Bargin

Answers

the better bargain if I'm right should be the 1.25 quarts.

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marblesWhat is the probability that you choose a red marble and then a green marble assuming you replace the first marble?

A) 1/24
B) 5/72
C) 5/66
D) 5/6

Answers

B)5/72 i hope this helped

Answer:

b

Step-by-step explanation:

0.1 is 1/10 of what number

Answers

0.1 is 1/10 of 1
as 1 divided by 10 is 0.1
so the answer is 1
hope this helps
1 is the number as 1.0 is a whole number and 0.1 divides into it ten times

A teacher offers her students 5 fake dollars to spend in the class store, when they get a perfect score on their math tests. If one of her students gets a perfect score on 4 of the math tests and already has 25 fake dollars, how many fake dollars, in total, does this student have to spend in the class store?

Answers

Answer:

45 fake dollar.

Step-by-step explanation:

Given: teacher offer 5 fake dollar for each perfect score in Math test.

           One of Student get perfect score on 4 maths test.

          Student already have 25 fake dollor.

Now, solving to find total number of fake dollar teacher offered to student.

As given teacher offer 5 dollar for each perfect score in maths test and student got perfect score on 4 maths test.

Number of fake dollar offer to the student= Fake\ dollar\ offered\ for\ each\ perfect\ score\ *\ number\ of\ maths\ test\ with\ perfect\ score∴ Number of fake dollar offered to the student=  5* 4= 20\ fake\ dollar

We know, student already have 25 fake dollar.

Next, finding total number of fake dollar student have.

Total fake dollar student have= fake\ dollar\ offered\ by\ teacher + fake\ dollar\ student\ already\ have.

Total fake dollar student have= 20+25= 45\ fake\ dollar

Hence, student have total 45 fake dollar to spend in the class store.

7 times as much as the sum of 1/3 and 4/5

Answers

First of all, you add 1/3 and 4/5, so you get:
(1)/(3) + (4)/(5)

To add 2 fractions, they need to have the same denominator. Since 3 and 5 don't have a common factor, so you multiply 1/3 by 5, and 4/5 by 3, so you get:
(1*5)/(3*5) + (4*3)/(5*3)
(5)/(15) + (12)/(15)

Now, the two fractions got the same denominator, and you can add them by adding the numerators over the same denominator. (You don't add denominators in addition) so you get:
(5+12)/(15)
(17)/(15)

That's the sum of 1/3 + 4/5.

Now, they want the sum of the 2 fractions 7 times. So you multiply 17/15 by 7. And as you know, 7 = 7/1. So you get:
(17)/(15) * (7)/(1)

In multiplication no need to have the same denominator. You multiply nominators by nominators and denominators by denominators. So you get:
(17*7)/(15*1)
(119)/(15)

Since 119 and 15 don't have a common factor, so they can't be simplified.
So, the answer is 119/15. 

Hope this Helps! :D

What you have to do first is to add (1)/(3) and (4)/(5),

Further Explanation

Therefore we have:

= (1)/(3) + (4)/(5)

= ( (1)/(3) + (4)/(5) ) / 15 (15 is the smallest number that divide both denominator also known as LCD)

= (5 x 1) + (3 x 4) / 15

= 5 + 12 / 15

= (17)/(15)

Therefore, the sum of (1)/(3) + (4)/(5) is (17)/(15)

But since the question says you should determine the sum of the 2 fractions, therefore you should multiply (17)/(15) by 7. Therefore you should have:

(17)/(15) X 7 (7 can also be expressed as (7)/(1))

= (17)/(15) x (7)/(1) (notably, in multiplication there is no need for the fraction to have the same denominator. You can multiply both numbers at the top together (numerator) and do same with the denominator.

= (119)/(15)

= 7(14)/(15)

Therefore, 7 times as much as the sum of (1)/(3) and (4)/(5) is 7(14)/(15)

LEARN MORE:

KEYWORDS:

  • multiplication
  • addition
  • sum
  • denominator
  • numerator
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