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3 years ago

Solve this system of equations by substitution: −3x + 3y = 3 and −5x + y = 13

Mathematics

2 answers:

nadya68 [22]3 years ago

5 0

Answer:

x = -5 y = 12

Step-by-step explanation:

-3x + 3y = 3

-5x + y = 13

y = 13 +5x

-3x + (13+5x) = 3

x = -5

-5(-5) + y = 13

y= 12

BaLLatris [955]3 years ago

3 0

Easy x=-5 and y =12 good luck

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F(x) = 4x - 1<br> g(x) = x2 - 4x<br> Find f(g(3))

nasty-shy [4]

Answer:

-13

Step-by-step explanation:

hello,

Replace x by the value as below

$g(3)=3^2-4\times3=9-12=-3\\f(g(3))=f(-3)=4\times(-3)-1=-12-1=-13\\$

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3 years ago

What is the y-value of point A?

Fudgin [204]

Answer:

The y-value of Point A is 1.

Step-by-step explanation:

Because Point A only went up one (1) the coordinate plane.

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3 years ago

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If A = {4, 7, 10, 13, 17) and B = {3,5, 7, 9), then which of the following statements is true?

stealth61 [152]

Answer:

Step-by-step explanation:

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3 years ago

Haley measured the distances between her house and two of her friends' houses. ellen's house is 1.41 miles away from haley's, an

Arada [10]

Answer: Ellen's house is farther away by 898 feet.

Step-by-step explanation:

Given: The distance between Haley's house and Ellen's house = 1.41 miles

We know that 1 mile = 5,280 feet

Then, $1.41\text{ miles}=1.41\times5,280\text{ feet}=7,444.8\text{ feet}$

The distance between Haley's house and Dirk's house = 6,547 feet

Clearly, 6,547<7,444.8

And $7444.8-6547= 897.8\approx898$

Therefore, Ellen's house is farther away by 898 feet.

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3 years ago

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Find the slope and the y-intercept of the graph of y+1=4/3x.

riadik2000 [5.3K]

Answer:

Slope = 4/3x; y-intercept = -1

Step-by-step explanation:

y + 1 = 4/3x

You have to write this equation in slope-intercept form (solve for y) if you want to find the slope and y-intercept

y + 1 = 4/3x

Subtract one from both sides

y + 1 - 1 = 4/3x - 1

y = 4/3x - 1

Now that we have the equation, you can now find the slope and y-intercept

y = mx + b; m is the slope and b is the y-intercept

So for y = 4/3x - 1, the slope is 4/3x and the y-intercept is -1

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3 years ago