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nirvana33 [79]
3 years ago
15

Hey help me plz!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
stira [4]3 years ago
3 0

Step-by-step explanation:

Let's verify

\\ \tt{:}\leadsto -   \frac{1 }{3} x + 6 =  - 6 +  \frac{2}{3} x \\ \\ \tt{:}\leadsto 6 + 6 =  \frac{2}{3} x +  \frac{1}{3} x \\ \\ \tt{:}\leadsto 36 =  \frac{3}{3} x \\ \\ \tt{:}\leadsto 36 = x

<h3>Thus verified</h3>
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Q is directly proportional to r.<br> Q is 76 when r is 20.<br> Work out q when r is 45
r-ruslan [8.4K]

Answer:

171

Step-by-step explanation:

Q~r

find k (k is the constant)

Q=kr

76=k×20

76=20k divide 20 on both sides giving you

k=3.8

then Q=k×r

Q=3.8×45

Q=171

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3 years ago
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What is 3/8 -1/8 plz help me !!!!!
Nuetrik [128]
2/8 is the answer because if you do 3-1 it would equal 2 and then you would put 2 over eight. You can even simplify it to 1/4 because 2 and 8 can both be divided by 2.
6 0
3 years ago
Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?
goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

A(x) = \frac{f(b)-f(a)}{b-a}

As per the statement:

f(x) = x^2-2x-4

we have to find the average rate of change from x = -1 to x = 4

At x = -1

f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1

and

at x = 4

f(4) = (4)^2-2(4)-4 = 16-8-4 = 4

Substitute these in [1] we have;

A(x) = \frac{f(4)-f(-1)}{4-(-1)}

⇒A(x) = \frac{4-(-1)}{4+1}

⇒A(x) = \frac{5}{5}

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

4 0
3 years ago
Read 2 more answers
Need help please?):!!
Sunny_sXe [5.5K]
It’s located in Quadrant III
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3 years ago
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