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velikii [3]
3 years ago
11

PLLLLLLLLZZZZZZ help will give brainliest

Mathematics
1 answer:
Elodia [21]3 years ago
7 0

Answer:A. 3x^2-2x-1+9x+2x^2-3=5x^2+7x-4

B. 5x^3+4x^2-x-3-5x^2-7x+4=5x^3-x^2-8x+1

C. Polynomials are closed under addition and subtraction...

Step-by-step explanation:

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A new shopping mall records 120 total shoppers on their first day of business. Each day after that, the number of shoppers is 10
Iteru [2.4K]

Answer:

1,139\ shoppers

Step-by-step explanation:

we know that

In this problem we have a exponential function of the form

y=a(b)^{x}

where

a is the initial value or y-intercept

b is the base of the exponential function

r is the rate in decimal form

b=(1+r)

In this problem we have

x ----> the number of days

y ----> the number of shoppers

a=120

r=10%=10/100=0.10

b=1+0.10=1.10

substitute the values

y=120(1.10)^{x}

First day

y=120

Second day

For x=1 day

substitute the value of x in the equation and solve for y

y=120(1.10)^{1}=132

Third day

For x=2 days

y=120(1.10)^{2}=145

Fourth day

For x=3 days

y=120(1.10)^{3}=160

Fifth day

For x=4 days

y=120(1.10)^{4}=176

Sixth day

For x=5 days

y=120(1.10)^{5}=193

Seventh day

For x=6 days

y=120(1.10)^{6}=213

Adds the numbers

120+132+145+160+176+193+213=1,139

3 0
3 years ago
Read 2 more answers
Mr. and Mrs. Quagmire are trying to decide on a name for their new baby girl. for the first name they like either Melissa, Jenni
marin [14]
8 choices
4 first names and for each 2 middle names
6 0
3 years ago
Can you please help me with this
e-lub [12.9K]

The answer is D.

Hope this helps!

If it does please give brainliest!

6 0
3 years ago
Four friends were born in consecutive years. The sum of their ages is 62. What is the age of the oldest friend?
denis-greek [22]
Since our sum is 62, and we have consecutive numbers being added, our range is most likely going to be from 10-20.
To further solve this problem easily, try finding 4 consecutive numbers with the ones place adding up to 12, 22, 32, 42, or any number that sums up to the 2 in the ones place.
Let's try 14, 15, 16, 17, since 4, 5, 6, and 7 sum up to a number with a 2 in the ones place.
14 + 15 = 29,
16 + 17 = 33.
33 + 29 is 62.
We have found the age of the friends, but we're looking for the oldest.
Our largest number is 17.
Your answer is 17 years old.
I hope this helps!
3 0
3 years ago
Jenny and Penny bought a llama together for £4500. Jenny paid £1215 towards this total. What percentage of the cost of the lama
lesya [120]

27%

To calculate the percentage Jenny paid, divide the amount she paid by the cost of the llama and multiply by 100%

= \frac{1215}{4500} × 100% = 27%



6 0
3 years ago
Read 2 more answers
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