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3 years ago

5

6)

2 answers:

tangare [24]3 years ago

7 0

If Tim was 27 years old 9 years ago, that’s the same as 27 + 9 = x where x is his current age.

We can rearrange this and bring 9 to the other side.

27 = x - 9

The last option D is correct.

Dvinal [7]3 years ago

6 0

Answer:

It has to be x - 9= 27

so it can be x=36

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What does the f(n - 1) represent?

leonid [27]

I'm assuming that you are talking about sequences <3

In the context of a recursive formula where we have "n-1" in sub-index of "a", you can think of "a" as the previous term in the sequence. In the context of an explicit formula like "-5+2(n-1)" "n-1" represents how many times we need to add 2 to the first term to get the nth term.

Dw if you don't understand, sequences and functions isn't an easy topic

3 0

3 years ago

What is the value of z?

babymother [125]

Answer:

Step-by-step explanation:

<u>Item 1:</u>

Discount = Original price - discount price

= 22.50 - 13.50

= $ 9

Discount percentage = $\frac{9}{22.50}*100\\\\$

= 40%

Discount percentage = 40%

Tax = 14.31 - 13.50 = $0.81

Tax% = $\frac{0.81}{13.50}*100\\\\$ = 6%

Tax percentage = 6%

<u>Item 2:</u>

Tax = 6% of 16.20

= 0.06 * 16.20

= 0.972

Tax = $ 0.97

Total price (including tax )= 16.20 + 0.97 = $ 17.17

x = $ 17.17

<u>Item 3:</u>

Discount = 40% of 32.50

= 0.4 * 32.50

= $ 13

y = 32.50 -13

y = $ 19. 50

Tax = 6% of 19.50

= 0.06 * 19.50

= 1.17

z = 1.17 + 19.50

Z =$ 20.67

5 0

3 years ago

SimpifyWhat is x to the power of 3 times x to the power 7?

jeka94

Answer:

Here is your solution-

x³ times x⁷

means, x³×x⁷

Here you just have to add the powers as aⁿ×aᵐ=aⁿ⁺ᵐ

x³⁺⁷

x¹⁰

7 0

3 years ago

Read 2 more answers

Alexa and her friends went out for pizza to celebrate the softball team’s victory. Their total bill for the pizza and drinks wa

Nitella [24]

Answer:

$39

Step-by-step explanation:

32.50:100 × 20 = $6.50

32.50+6.50 = $39

5 0

3 years ago

The cost of a floral bouquet after a discount is applied is represented by the function below, where x represents the number of

galina1969 [7]

The average rate of change over the interval $(12,24)$ is 2.17

Explanation:

Given that the cost of a floral bouquet after a discount is given by the function $f(x)=2.17x-10.00$

We need to determine the average rate of change over the interval $(12,24)$

The average rate of change can be determined using the formula,

$\frac{f(b)-f(a)}{b-a}$

where $a=12$ and $b=24$

Substituting the value of a and b in the function, we get,

$f(12)=2.17(12)-10.00$

$=26.04-10.00$

$=16.04$

$f(24)=2.17(24)-10.00$

$=52.08-10.00$

$=42.08$

Hence, substituting these values in the formula, we get,

$\frac{f(b)-f(a)}{b-a}=\frac{42.08-16.04}{24-12}$

Simplifying, we get,

$\frac{f(b)-f(a)}{b-a}=\frac{26.04}{12}$

Dividing, we have,

$\frac{f(b)-f(a)}{b-a}=2.17$

Thus, the average rate of change over the interval $(12,24)$ is 2.17

7 0

3 years ago