3 years ago

(HELO FAST )What is the solution to this system of equations? *

Mathematics

2 answers:

Alex787 [66]3 years ago

8 0

Answer:

Step-by-step explanation:

i think thats the answer

Ket [755]3 years ago

5 0

Answer:a I think that’s the answer

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I hate math so I really need help

vivado [14]

Answer:

b. 4.5 cm

a. 42 mm is the answer

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2 years ago

Factor - 1/2 out of - 1/2 x plus 6 as a factored expression

Strike441 [17]

Answer:

$-\frac{1}{2} (x-12)$

Step-by-step explanation:

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3 years ago

What is the sum of a seven-term geometric series if the first term is -2, the last term is

ExtremeBDS [4]

Answer:

-26042

Step-by-step explanation:

sum of a finite geometric series =

$\frac{a_1(1-r^n)}{1-r}$

here, a1 is the first term, r is the common ratio, and n is the number of terms

a1 = -2

r = -5

n = 7

$\frac{a_1(1-r^n)}{1-r} = \frac{-2(1-(-5)^7)}{1-(-5)} = -26042$

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2 years ago

Which is a possible equation of a parabola that intersects the x-axis at points (-1,0) and (3,0)? Question 2 options: y=x2+3x−3

olga2289 [7]

Answer:

Step-by-step explanation:

Where a graph intersects the x-axis is where the solutions or zeros of the quadratic are found...where y = 0.

If the points of intersection are x = -1 and x = 3, then putting those into factors gives us (x + 1)(x - 3) = 0. FOIL that out to get the quadratic.

$x^2-3x+x-3$ which simplifies to

$x^2-2x-3=y$

Looks like the third option there.

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3 years ago

3x + 5y = 23<br> y = 4x<br><br> What are x and y that make both equations true?

Flauer [41]

So basically just add the equations to get rid of y. Then solve for x and plug into one of the equations for y. (1,4)

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3 years ago