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borishaifa [10]
3 years ago
8

How to solve it don't understand a thing

Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

1) 40ft^2

2)320mm^2

3) 96m^2

Step-by-step explanation:

first one

find the area of the bigger rectangle (80)

find the area of the inner rectangle (40)

subtract the bigger one from the smaller one(80-40=40)

shaded area is 40ft^2

second one

find the area as if it were a rectangle(720 cm)

find the area of the inner(400cm)

subtract the bigger from the smaller(720-400=320)

answer: 320mm^2

third

find area of the big square(196)

find area of one tiny unshaded square(25)

since all are the same 25x4 is 100

196-100=96

answer;96m^2

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While looking at some reports, a store manager notes that televisions that retail for $475 and up costing customers $513 once th
Mekhanik [1.2K]

The sales tax percentage of the store manager report is 7.41%

<h3>How to solve for the sales tax percentage</h3>

Customers are subject to a charge known as sales tax when they buy goods and services.

It is a pass-through tax, which means you must collect it from clients and send the money to your state or local government. the seller do not contribute sales tax.

The sales tax is first calculated by

= price after tax - price before tax

= 513 - 475

= 38

sales tax percentage is calculated using the formula

= (Tax amount / Price before tax) × 100%

= (38 / 513) * 100

= 7.4074

= 7.41%

Learn more about sales tax at:

brainly.com/question/20220356

#SPJ1

3 0
1 year ago
HELPPPP
satela [25.4K]

Answer:

the answer would be x(f)-3

Step-by-step explanation:

you already know

4 0
2 years ago
If a randomizer picks seven letters from the alphabet (with repeats allowed), how many possible outcomes are there?
Virty [35]

Answer:

7×26=182

Step-by-step explanation:

I'm pretty sure that's the right answer but I just multiplied 26 by 7. Hope that helped!

7 0
3 years ago
The sum of all integers between 3 and 11
Lena [83]

Answer:

49

Step-by-step explanation:

You would add 4+5+6+7+8+9+10 to get the sum of 49.

6 0
3 years ago
Read 2 more answers
The nth term of a sequence is 3n²-1
Anarel [89]

Answer: The number is 26.

Step-by-step explanation:

We know that:

The nth term of a sequence is 3n²-1

The nth term of a different sequence is 30–n²

We want to find a number that belongs to both sequences (it is not necessarily for the same value of n) then we can use n in one term (first one), and m in the other (second one), such that n and m must be integer numbers.

we get:

3n²- 1 =  30–m²

Notice that as n increases, the terms of the first sequence also increase.

And as n increases, the terms of the second sequence decrease.

One way to solve this, is to give different values to m (m = 1, m = 2, etc) and see if we can find an integer value for n.

if m = 1, then:

3n²- 1 =  30–1²

3n²- 1 = 29

3n² = 30

n² = 30/3 = 10

n² = 10

There is no integer n such that n² = 10

now let's try with m = 2, then:

3n²- 1 =  30–2² = 30 - 4

3n²- 1 = 26

3n² = 26 + 1 = 27

n² = 27/3 = 9

n² = 9

n = √9 = 3

So here we have m = 2, and n = 3, both integers as we wanted, so we just found the term that belongs to both sequences.

the number is:

3*(3)² - 1 = 26

30 - 2² = 26

The number that belongs to both sequences is 26.

6 0
2 years ago
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