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Sedaia [141]
3 years ago
13

Solve the system of equations by using substitution. y = 2x+ 3 x-y=-2

Mathematics
1 answer:
Arlecino [84]3 years ago
4 0

Answer:

the answer is (-1, 1)

Step-by-step explanation:

i hope this helps

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If a ball is thrown straight up into the air with an intial velocity of $$ ft/s, its height in feet after $$ seconds is given by
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Answer:

i have a f in math

Step-by-step explanation:

4 0
3 years ago
I need help with this question.
SSSSS [86.1K]

Answer:

\displaystyle S_{27}=675

Step-by-step explanation:

The sum of N consecutive natural numbers is given by:

\displaystyle S_N=\frac{N}{2}(F+L)

We need to find the sum of the natural numbers between 12 to 38.

To calculate the required sum we have F=12, L=38, but we don't have the value of N.

From 12 to 38 there are 38 - 12 + 1 = 27 natural consecutive numbers, thus N=27.

Substituting in the formula:

\displaystyle S_{27}=\frac{27}{2}(12+38)

\displaystyle S_{27}=\frac{27}{2}(50)

\displaystyle S_{27}=27*25

\mathbf{\displaystyle S_{27}=675}

5 0
3 years ago
The length of the hypotenuse of a 30 -60 -90 triangle is 16. What is the perimeter?
Brums [2.3K]
For a Right triangle with 30-60-90 degrees, the sides have specific ratios. If we assign a length of 1 to the short side (opposite 30), the hypotenuse will be 2, and the other leg will be square root 3.

Given that the hypotenuse is 16 in this triangle, we will need to multiply each of our ratios given above by 8 (16/2)

So, the short side is 8, the hypotenuse is 16 and the last leg is 8(square root 3). Adding these three sides we get

8 + 16 + 8 sqrt(3)
24 + 8 sqrt(3)

The answer is B
3 0
3 years ago
I NEED HELP PLEASE PLEASE
Aliun [14]

Answer:

length= 17.5

width=11.5

( I worked this out myself but I don't know if its right tho)

5 0
3 years ago
If f(x)= x^2 which of the following describes the graphs of f(x) +4
deff fn [24]
The parabola was moved up 4 on the y-axis
7 0
3 years ago
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