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love history [14]
3 years ago
12

What is the solution to the system of equations? {y=5x−10y=−3x+14

Mathematics
1 answer:
Dahasolnce [82]3 years ago
5 0

Answer:

x = 3 and y = 5

Step-by-step explanation:

Given equations are :

y=5x−10 ..(1)

y=−3x+14 ...(2)

Subtract equation (2) from (1).

y-y = 5x−10-(−3x+14)

0 = 5x-10+3x-14

0= 8x-24

8x = 24

x = 3

Put the value of x in equation (1).

y=5(3)−10

= 15-10

y = 5

So, the values of x and y are 3 and 5 respectively.

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Please i need help with this i dont understand it​
CaHeK987 [17]

Answer:

1. No

2. Right triangle

3. No

4. Right triangle

Step-by-step explanation:

A, B = two smallest sides

C = hypotenuse, largest side

Pythagorean theorem. If A^2 + B^2 = C^2, then you have a right triangle.

6 0
3 years ago
Find the first derivative for y = f(x). fox ) 3x² -5x-1 at a Pocat where a = 4​
Brums [2.3K]

Answer:

Step-by-step explanation:

f(x) = 3x² -5x - 1

f'(x) =2*3x - 5*1 +0

     = 6x - 5

f'(4) = 6*4 - 5

      = 24 - 5

      = 19

3 0
3 years ago
Jennifer has 25 coins with a total value of $4.25. The coins are quarters and nickels. How many of each does she have?
kirill115 [55]

Answer:

15 quarters, 10 nickels

Step-by-step explanation:

q+n=25

0.25q+0.05n=4.25

multiply the first equation by -0.25 and add the second equation to it

-0.25q-0.25n=-6.25\\0.25q+0.05n=4.25
________________
                -0.2n=-2

n=\frac{-2}{-0.2} =10   has 10 nickels

q=25-n=25-10=15  has 15 quarters

10(.05) +15(0.25) = 0.5 + 3.75 = 4.25

Hope this helps

8 0
11 months ago
How to find points of inflection from first derivative graph
SCORPION-xisa [38]
To find where the second derivative of the function changes sign, from negative to positive, or vice-versa. So, we find the second derivative of the given function.
7 0
2 years ago
Which are possible values for x? Check all that apply.<br> O-10.2<br> O 3<br> O-8<br> O 2.6<br> O 20
MAXImum [283]

Answer:

what's the formula that you're supposed to apply the x to ?

6 0
3 years ago
Read 2 more answers
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