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Alisiya [41]
3 years ago
6

Mark correctly drew a heptagon on the board. How many interior angles does Mark's heptagon have?

Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0
There are 7 interior angles
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Find the sum of 6a - 5b + c, -2a +4b -2c​
Sphinxa [80]

Answer:

4a-b-c

Step-by-step explanation:

we first look at the letters of each number. if there is only a letter, there is an imaginary 1 in front of it. we need to make sure that we add the numbers that have the exact same letters because they are known as like terms. we cannot add 6a and 4b because the letters are different and they are known as unlike terms. When we add numbers with the same letter ONLY the number changes

4 0
2 years ago
Jen invested $3500 into a continuously compounded account with an interest rate of 3.1%. After 9 years, how much money is in the
GarryVolchara [31]

Answer:

≈$4607

Step-by-step explanation:

I will assume it's compounded yearly.

Apply the compound interest formula.

A=P(1+\frac{r}{n})^{nt}

A = Total

P = Initial Principle

r = Interest Rate

n = number of interest in every t period

t = number of periods

In the case,

P = 3500

r = 3.1% = 0.031

n = 1

t = 9

Hence,

A=3500(1+\frac{0.031}{1})^{1*9}

A = 4606.764717......

A ≈ 4607 (nearest whole number)

7 0
2 years ago
Can someone help with this Algebra? pls will mark Brainlist<br> -7x -3x + 2 =8x -8
OLga [1]

Answer:

x=0.55

Step-by-step explanation:

-7x -3x + 2 =8x -8

-10x+2=8x-8

2+8=8x+10x

10=18x

10/18=x

x=0.55

5 0
3 years ago
Read 2 more answers
Solve system by substitution<br> Y=x-2<br> Y=4x+1
Natasha_Volkova [10]

y=x-2\\y=4x+1\\\\x-2=4x+1\\\\3x=-3\\x=-1\\\\y=-1-2\\y=-3

6 0
4 years ago
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Arica saved 20% on a shirt she just bought. if the amount of money she saved was $6, what as the original price of the shirt?
Reil [10]
The original price of the shirt would be $30
4 0
3 years ago
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