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ZanzabumX [31]
2 years ago
9

Cameron had 30 minutes to do a three problem quiz. He spent 8 3/4 minutes on question A and 5 1/2 minutes on question B. How muc

h time did he have left for question C?
Mathematics
1 answer:
Delvig [45]2 years ago
3 0
He has 15 and 3/4 minutes left over
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Find the value of two numbers if their sum is 12 and their difference is 4. Systems of equations 8th grade math.
arlik [135]

To solve this problem, we will setup a system.

We know that two numbers have a sum of 12 and a difference of 4.

So let's call our first number x and our second number y.

So we know that x + y = 12.

We can also say that x - y = 4.

Now rewrite the equations on top of each other.

<h2>x + y = 12</h2><h2>x - y = 4</h2><h2 />

Now we can use addition to solve this system.

When we add the equations together, the y's will cancel.

So we have 2x = 16.

Now divide both sides by 2 and x = 8.

Now plug an 8 back in for x in the first equation to find that y = 4.

So our numbers are 8 and 4.

7 0
3 years ago
The sum of the numbers j,k, and m is 115. The ratio of j to k is 2:7 and the ratio of k to m is 14:5. What is the value of k?
I am Lyosha [343]

Answer:

I know how to help you.

Step-by-step explanation:

There is a web site called Khan Academy and it can help you understand how to solve it and it is completely free and you can use it as much as you want. There are videos that explain it to you and problems like help with practice I 100% reccomend it!

8 0
3 years ago
Read 2 more answers
Mars has m moons. The number of moons of Pluto is one more than twice the number of moons of Mars. The number of moons of Neptun
tigry1 [53]

Answer:

Neptune has 2 more than 6 times the number of moons on mars

Explanation:

neptune = 6m+2

mars has 'm' moons

pluto has one more than twice that of mars, = 2m+1

neptune is one less than thrice of pluto

= 3(2m+1) -1

= 6m+3 -1

= 6m+2

6 0
2 years ago
Can someone plzzz answer these questions with showing work?
snow_lady [41]
So what you got to do is divide them perseay use a calculator for the first one 2/15 what would that be in a decimal 0.13333333333333 what ever on has 0.13333333  or something else repeating that is the one that you will circle 11/20=0.55   17/40 =0.425 1/2=0.5 so you answer would be 2/15
hope this helped
7 0
3 years ago
Can someone help me on this math question its confusing ill give brainly when right!!!
notsponge [240]

\huge\mathsf\green{ANSWER}:—

The coefficients are:-

-4,-6

<h2>hope it would be helpful for you</h2>
7 0
2 years ago
Read 2 more answers
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