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4 years ago

How do you do question 4, 5 and 6? I don't understand :(

Mathematics

1 answer:

AleksandrR [38]4 years ago

6 0

Sorry i would help but i dont understand either. D:

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What is the slope of the line if the equation is 5x-3y=9

allochka39001 [22]

Answer:

Slope = 5/3

Step-by-step explanation:

5x - 3y = 9

Write in slope y-intercept form: y = mx +b

-3y = -5x + 9

Divide the whole equation by (-3)

$\frac{-3y}{-3}=\frac{-5x}{-3}+\frac{9}{-3}\\\\y =\frac{5}{3}x- 3$

Slope =5/3

5 0

3 years ago

The diameter of the moon is 2,160 miles. A model has a scale of 1 in : 150 mi. What is the diameter of the model?

Charra [1.4K]

Answer:

The diameter of the model is 14.4 inches.

Step-by-step explanation:

The Diameter of the moon = 2,160 miles

The scale on the model represents 1 in = 150 miles

Let the model represents k inches in 2,160 miles.

So, by the Ratio of Proportionality:

$\frac{1}{150} = \frac{k}{2160}$

⇒ $k = \frac{2160}{150} \\\implies k = 14.4$

or, k = 14.4 inches

⇒On the scale 2160 miles is represented as 14.4 inches

Hence the diameter of the model is 14.4 inches.

3 0

3 years ago

The step function f(x) is graphed.

AnnyKZ [126]

Answer:

It is f(x), y or the "output".

Step-by-step explanation:

3 0

3 years ago

What is the value of x if 17-3(x+9)=50

Rom4ik [11]

Answer:

-31 1/3

Step-by-step explanation:

17-3(x+9)=50

-17 -17

-3(x+9)=67

divide by -3

x+9=-22 1/3

-9 -9

x=-31 1/3

6 0

4 years ago

Read 2 more answers

Write your answer without using negative exponents (u^4)^-7

umka21 [38]

Answer:

solution,

${(u}^{4} \: )^{ - 7} \\ = {(u)}^{4 \times ( - 7)} \\ = {(u)}^{ - 28} \\ = \frac{1}{ {u}^{28} }$

Hope this helps...

Good luck on your assignment..

7 0

3 years ago