MATHEMATICS HIGH SCHOOL

Solve the system of equations.2.5y + 3x = 27
5x – 2.5y = 5

What equation is the result of adding the two equations?

What is the solution to the system?

Answers

Answer 1
Answer: If you put them together, +2.5y and -2.5y neutralize themselves while 5x and 3x become 8x.

2.5y + 3x = 27
5x – 2.5y = 5

8x = 32
x = 4

2.5y + 3x4 = 27
2.5y + 12 = 27
2.5y = 27-12
2.5y = 15
y = 15/2.5
y = 6

X = 4
Y = 6
Answer 2
Answer:

Answer:

x=4 Y=6

Step-by-step explanation:

                                                                                                                                                                                                     

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Write the radical below in the simplest radical form

√210

Pls show ur work

Answers

Answer:

√(210)

Step-by-step explanation:

Let's look at the prime factors of 210.

210 = 2 * 3 * 5 * 7

√(210) = √(2 * 3 * 5 * 7) = √(210)

Since no factor appears more than once, this radical cannot be simplified.

What is 6n-8=16? Can someone tell me please

Answers

Answer: n = 4

Step-by-step explanation: To solve for n, we first isolate the term containing n which is 6n.

Since 8 is being subtracted from 6n,

we add 8 to both sides of the equation.

On the left, the -8 and +8 cancel out and on the right, 16 + 8 is 24.

So we have 6n = 24.

Now we can finish things off by just

dividing both sides of the equation by 6.

On the left the 6's cancel and on the right, 24 divided by 6 is 4.

So we have n = 4.

Answer:

n = 4

Step-by-step explanation:

6n - 8 = 16

Add 8 on both sides.

6n = 16 + 8

6n = 24

Divide 6 into both sides.

n = 24/6

n = 4

The value of n in the equation is 4.

Please hurry need it asap

Answers

Answer:

I think its B

Step-by-step explanation:

Answer:

use math w ay .co m its helps

Step-by-step explanation:

The ground temperature at an airport is 13 °C. The temperature decreases by 7 °C for every increase of 1 kilometer above the ground. What is the temperature outside a plane flying at an altitude of 5 kilometers?The temperature outside a plane flying at an altitude of 5 kilometers is ____ c*?

Answers

I’m guessing it’s -22

What is 79.35 divided by 5

Answers

79.35 divided by 5 equals: 15.87
~~~~~~~~~~~~~~~~~~~~~~~~~~~
To check:
    243
    15.87
  x  5.00
     0000
    0000
 79.35
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope this helped! :)
Any more questions, please ask! :)

Can someone show me how to factor this? 5k-35

Answers

Sure.
Can you find a number that goes into both terms, 5k and 35 ?
How about 5 ?

(5k - 35) = 5 times (k - 7) .
5k-35=5(k-7)
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