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3 years ago

I need help with this math problem.

Mathematics

2 answers:

storchak [24]3 years ago

8 0

p r
10 18
12 16
14 14
16 12

mars1129 [50]3 years ago

5 0

14= 14
16=12
I hope I helped

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If 10x+6y=7 is a true equation, what would be the value of 6(10x+6y)?

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

We know that 10x + 6y = 7, and so

6(10x + 6y) = 6(7) = 42

8 0

3 years ago

PLEASE HELP <br><br> I WILL BRAINLIEST !

jasenka [17]

Answer:

10 1/12

Step-by-step explanation:

In order to subtract fractions, you have to give them a common denominator.

18 1/2 can be rewritten as 18 6/12, as they are the same thing and 6/12 simplifies to 1/2. We make it 6/12 because we have to subtract it by 8 5/12, and the denominators are both 12.

So now we have 18 6/12 - 8 5/12, which gives us 10 1/12.

8 0

3 years ago

Solve each quadratic equation by factoring and using the zero product property.<br><br> n^2 - 49 = 0

Karo-lina-s [1.5K]

Answer:

x = 7 x = -7

Step-by-step explanation:

n^2 - 49 = 0

+49 +49

n^2 = 49

$\sqrt{n} = \sqrt{49} \\\\n = +/- 7\\$

7 0

3 years ago

Read 2 more answers

What is the answer in square root

Viefleur [7K]

Hi!
First of all, we can look and see that these sqaure roots are the same, so it's easy to add.

In square roots, if the number INSIDE the square root is the same, it stays that way for the answer .

So the equation is 9(square root) 5 + 4(square root) 5.
The numbers out the sqaure root can just be added. So 9+4 = 13.

Lastly just attach the sqaure root onto the 13

Final answer should be 13(square root)5

***use the actual symbol in place of (sqaure root)

I hope this helps!

7 0

3 years ago

Jamie recently drove to visit her parents who live 510 miles away. On her way there her average speed was 25 miles per hour fast

tino4ka555 [31]

Answer:

Average speed in mph with which he goes to parent's place = 75 mph

Average speed with he comes back = 50 mph

Explanation:

Distance between Jamie's house and parent's house = 510 miles.

Let u be the average speed in mph with which he goes to their place.

We have the average speed of coming back = (u -25) mph

Total time of journey considering both ways = 17 hours.

Time taken to go their home = 510/u hours

Time taken for coming back = 510/(u-25) hours

So total time = $\frac{510}{u} +\frac{510}{u-25}$

Equating both times we have

$\frac{510}{u} +\frac{510}{u-25}=17\\ \\ 510u-12750+510u=17u^2-425u\\ \\ 17u^2-1445u+12750=0\\ \\ u^2-85u+750=0\\ \\ (u-75)(u-10)=0$

u = 75 mph or u =10 mph

If the average speed in mph with which he goes to their place = 75 mph, average speed with he comes back = 75-25 = 50 mph

If the average speed in mph with which he goes to their place = 75 mph, average speed with he comes back = 10-25 = -15 mph(Not possible)

So, Average speed in mph with which he goes to parent's place = 75 mph

Average speed with he comes back = 50 mph

5 0

3 years ago