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ehidna [41]
2 years ago
10

Please help me solve for the area

Mathematics
2 answers:
Paha777 [63]2 years ago
7 0

Answer:

5x4x9=180  then 4 divided by 2 is 2 then 2x180 you get the answer

Step-by-step explanation:

Elena L [17]2 years ago
5 0

Answer:

-9

Step-by-step explanation:

why not

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PLEASE HELP, and dont forget to show work!
weeeeeb [17]
Answer: -rad7, +rad7

Explanation:
- Divide the equation by 6 (x^2-7=0)
- Add 7 (x^2=7)
- Square root x to find solutions (x=rad7)
- Dont forget the radical means that there are two solutions!
6 0
2 years ago
Find the common difference of the arithmetic sequence 4, 1, -2, ...​
wel

Answer:

6. i dont kno

Step-by-step explanation:

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Select the correct answer. A company that packages cold cuts needs to transport the packaged meat to the supermarket. It will co
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The required equation is y = 1,200 + 100x
4 0
3 years ago
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The third term of an arithmetic sequence is equal to 9 and the sum of the first 8 term is 42. Find the first term and the common
zloy xaker [14]

Answer:

The first term is 14

The common difference is -2.5

Step-by-step explanation:

we know that

The rule to calculate the an term in an arithmetic sequence is

a_n=a_1+d(n-1)

where

d is the common difference

a_1 is the first term

we have that

The third term of an arithmetic sequence is equal to 9

so

a_3=9

n=3

substitute

9=a_1+d(3-1)

9=a_1+2d ----> equation A

The rule to find the sum of the the first n terms of the arithmetic sequence is equal to

S=\frac{n}{2} [2a_1+(n-1)d]

we have

The sum of the first 8 term is 42

so

S=42

n=8

substitute

42=\frac{8}{2} [2a_1+(8-1)d]

42=4[2a_1+7d]

10.5=2a_1+7d ----> equation B

Solve the system of equations

9=a_1+2d ----> equation A

10.5=2a_1+7d ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

the solution is (14,-2.5)

see the attached figure

therefore

a_1=14\\d=-2.5

The first term is 14

The common difference is -2.5

8 0
3 years ago
The average of 171 and x
weqwewe [10]
I might is 171 + x= 171x
im not good i maths so
6 0
3 years ago
Read 2 more answers
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