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3 years ago

(1 - 3k) - 4(2 + 2.5k)tbh I just need the answer

Mathematics

1 answer:

sashaice [31]3 years ago

3 0

-7-13k would be the answer

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Which ratio is equivalent to 10:22<br> 2:8<br> 3:15<br> 5:1<br> 9:3

guapka [62]

I think the answer is 5:1

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2 years ago

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I need help with all except graph on first question please! Work shown or not doesn’t matter

Jobisdone [24]

Answer:

y = 7/5x + 18/5

Step-by-step explanation:

so we have y = mx + b

f(1) = 5

f(-4) = -2

so let's find b

so like if you do (5 - (-2))/(1 - (-4)) you get (5 + 2)/(1 + 4) = 7/5

y = 7/5x + b

so now we can plug in a value like f(1) = 5

5 = (7/5)1 + b

b = 18/5

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2 years ago

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Fiesta28 [93]

Answer:

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2 years ago

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How do you find surface area of a cylinder?

Vlad1618 [11]

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2 years ago

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Mr. Martin's math test, which is worth 100 points, has 35

AlekseyPX

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Further explanation:

The given system is a system of linear equations in two variables.

We will use the subsitution method to solve the system

Given equations are:

$x+y=35\\5x+2y=100$

From equation no 1:

$x+y=35\\x=35-y$

Putting x=35-y in second equation

$5x+2y=100\\5(35-y)+2y=100\\175-5y+2y=100\\-3y=100-175\\-3y=-75\\\frac{-3y}{-3}=\frac{-75}{-3}\\y=25\\Putting y=25 in first equation\\x+25=35\\x= 35-25\\x=10$

Hence,

Number of questions worth 5 points = 10

Number of questions worth 2 points = 25

Keywords: Linear Equations, Substitution method

Learn more about substitution method at:

#LearnwithBrainly

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2 years ago

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