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Evgen [1.6K]
3 years ago
9

Need help as soon as possible please

Mathematics
1 answer:
Leokris [45]3 years ago
5 0

Answer:

C - 10

Step-by-step explanation:

n is the number of the term

an = -2n+8

a9 = -2*9 +8

a9 = -18+8

a9 = -10

The 9th term is -10

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In a test, John was able to answer 15 correct out of 40 questions. Beth was able to answer 24 questions correctly out of 50. Mic
Helen [10]

Answer:

that is wrong beth has a better score

Step-by-step explanation:

14 out of 40 is 37.5%

and 24 out of 50 is 48%

4 0
2 years ago
Help with math?Please? ANYONE
AlekseyPX

Answer:

(-1, 1)

Step-by-step explanation:

Hi there!

We want to solve the system of equations given as:
2x-3y=-5

3x+y=-2

Let's solve this equation by substitution, where we will set one variable equal to an expression containing the other variable, substitute the expression as the variable that it equals, solve for the other variable (the variable that the expression contains), and then use the value of the solved variable to find the value of the first variable
In the second equation, we have y by itself; therefore, if we subtract 3x from both sides, then we will get an expression that y is equal to.

So subtract 3x from both sides

y=-3x-2

Now substitute -3x-2 as y in the first equation.
It will look something like this:

2x - 3(-3x-2)=-5

Now do the distributive property.

2x+9x+6=-5

Combine like terms

11x+6=-5

Subtract 6 from both sides

11x=-11

Divide both sides by 11

x=-1

Now substitute -1 as x in the equation y=-3x-2 to solve for y:

y=-3(-1)-2

multiply

y=3-2

Subtract

y=1

The answer is x=-1, y=1; this can also be written as an ordered pair, which would be (-1, 1)
Hope this helps!
If you would like to see another problem for additional practice, take a look here: brainly.com/question/19212538

7 0
2 years ago
Read 2 more answers
What is the inverse of f(x) = 1x+2?
jeka57 [31]
For this specific equation the answer is x - 2
3 0
3 years ago
Write the estimated weight of each dinosaur in scientific notation.
Lubov Fominskaja [6]
Argentinosaurus- 2.2x10^5

Brachiosaurus- 1.0x10^5

Apatosaurus- 6.6x10^4

Diplodocus- 5.0x10^4

Camarasourus- 4.0x10^4

Cetioauriscus- 1.985X10^4

I hope this helps :3
6 0
3 years ago
Read 2 more answers
Which of the following does NOT describe x-4
prisoha [69]

Answer:

Need a Picture please repost so I can help you :)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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