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3 years ago

9. Translate to an algebraic expression

Mathematics

2 answers:

Mashcka [7]3 years ago

4 0

Answer:

100-3x

Step-by-step explanation:

Well he has $100 and if each day he spends $3 we get the equation 100-3x giving us an expression we can use to calculate for any given day.

Alina [70]3 years ago

4 0

Answer:

x - 3

Step-by-step explanation:

umm i dont really know, just assuming

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What is the average rate of change of the amount of the element over the 10-minute experiment? *

Dima020 [189]

Answer:

$-2.7 g/min$

Step-by-step explanation:

Given: a graph

To find: the average rate of change of the amount of the element over the 10-minute experiment

Solution:

A rate of change of one quantity with respect to another quantity is known as rate of change. If y is the dependent variable and x is the independent variable then average rate of change = change in y /change in x.

From the graph,

change in x (time) = $10-0=10$ minutes

change in y ( amount of the element) = $3.22-30=-26.78$ g

So, average rate of change = $\frac{-26.78}{10} =-2.7 g/min$

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3 years ago

Which graph represents the given equation? <br><br> Y = 3/2x^2 + 4x - 2

lana [24]

Answer:

The graph is B

8 0

3 years ago

Layne uses software to graph f(x)=3x+2. Then she changes it to f(x)=3x-2 and uses the software to graph the new function.which o

Vanyuwa [196]

Answer:

B, the y-intercept

Step-by-step explanation:

The y-intercept will change but all else will stay the same.

When you shift a function up and down, the y-intercept will change.

8 0

3 years ago

7th grade work really need help on this!

seropon [69]

I really don’t know

I really dont know

4 0

3 years ago

If a triangle is 12 inches high and has a 20 inch long hypotenuse then how wide is it?

Ber [7]

Answer:

The triangle should be 16 inches wide.

Step-by-step explanation:

$\text {Use the Pythagorean Theorem to solve for the leg.}\\a^2 + b^2 =c^2$

What we know:

One of the legs measures 12 inches.

The hypotenuse is 20 inches.

We need to solve for b. Solving for a while b is 12 would also be acceptable.

$12^2 + b^2 = 20^2 \text { OR } a^2 +12^2=20^2$

We will use the first equation.

$12^2 + b^2 = 20^2\\12 * 12 = 144\\20 * 20 = 400\\\\\boxed {144 + b^2 = 400}$

$\text {Subtraction property of equality: }\\144-144+ b^2 = 400-144\\\boxed {b^2 = 256}\\\\\text {Take the square root of 256: }\\\sqrt{256}=\sqrt{b^2} \boxed {16 = b}$

The triangle should be 16 inches wide.

3 0

3 years ago