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3 years ago

What is the justification for step 4 in the solution process?

Mathematics

1 answer:

Sloan [31]3 years ago

4 0

Answer: its C the multiplication property of equality

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Jill earns $15 per hour babysitting plus a transportation fee of $5 per job. Write a formula for E, Jill's earnings per babysitt

Sphinxa [80]

E= 15h+5
This i believe is the right equation

5 0

3 years ago

What is the value of n so that the expression x2 11x n is a perfect square trinomial

saw5 [17]

Answer:

$n=\frac{121}{4}$

Step-by-step explanation:

Since we know that perfect square trinomial formula states that any trinomial of the form $ax^{2} +bx+c$ is said to a perfect square if it satisfies the condition $b^{2} =4ac$ .

We are given an expression $x^{2} ?11x ?n$ and asked to find value of n for expression to be a perfect square trinomial .

Let us compare our expression with perfect square trinomial formula.

We can see that a=1, b=11 and c=n.

Let us find value of n by substituting our given values in $b^{2} =4ac$ .

$11^{2} =4*1*n$

$121 =4n$ .

$n=\frac{121}{4}$

Therefore, $n=\frac{121}{4}$ will make the expression $x^{2} ?11x ?n$ a perfect square trinomial.

6 0

3 years ago

What is the average rate of change for this exponential function for the interval from x = 2 to x = 4?

Hunter-Best [27]

Answer:

The average rate of change over the interval is 120

Step-by-step explanation:

For a function f(x) the average rate of change over an interval [a,b] is given as;

f(b)-f(a)/b-a

in this case, a is 2 and b is 4

f(b) is 256 and f(a) is 16

Substituting these values in the equation for rate of change, we have;

(256-16)/(4-2) = 240/2 = 120

8 0

3 years ago

Will give Brainliest! if right!

Jet001 [13]

There are 7 pairs per poster and u have 8 posters so, I think u should do 7 times 8 and u get 56 so its B.56

4 0

3 years ago

Read 2 more answers

What is the solution to 5a-15+9a=3a+29

scZoUnD [109]

5a - 15 + 9a = 3a + 29

5a + 9a - 3a = 29 + 15

14a - 3a = 44

11a = 44

a = $\frac{44}{11}$

a = 4

3 0

3 years ago

Read 2 more answers