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mezya [45]
2 years ago
13

PLEASE HELP ME ASAP I NEED HELP ITS DUE AT 11:59

Mathematics
1 answer:
ivanzaharov [21]2 years ago
8 0

Answer:

When -8 is x then y = -29

When -4 is x then y = -17

When 4 is x then y = 7

When 6 is x then y = 13

Step-by-step explanation:

You simply substitute the numbers on the x row for x in the equation, then you solve the problem. (3 x -8) - 5, ect.

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The ratio of red cars to blue cars in a parking lot was 5:3 . If there was 40 red cars , how many blue cars were there ?
Bas_tet [7]
The answer is x equals 24
you set up a proportion new over old
so for red cars 40 over 5
since we don’t know the new for blue cars we’ll use x
so x over 3
we then make them equal to each other
40 x
—- = —-
5 3
cross multiply, then we get
120=5x
isolate the x by dividing 5 from both sides to get 24
5 0
3 years ago
How do I do number 3
kogti [31]

you simply have to add all of the numbers together, so it'll be 2+5+12+7+1 or 27, therefore the answer is B

5 0
3 years ago
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Ryan has shells and 4 equal groups tanner has 9 more than Ryan tanner has 3 fewer shells than parker. Parker has 48 shells. How
Nataly [62]

Answer:

9.75

Step-by-step explanation:

48-3=45

45-9=38

38÷4=9.75

3 0
3 years ago
What type of conic section is given by the equation 4x^2+9y^2=36? What are its domain and range?
Damm [24]
4x^2+9y^2=36\\
\\
\frac{4x^2}{36}+\frac{9y^2}{36}=\frac{36}{36}\\
\\
\boxed{\frac{x^2}{9}+\frac{y^2}{4}=1}

This is a equation of a ellipse (0,0) centered

Domais: {x∈R/-3≤x≤3}
Range:{y∈R/-2≤y≤2}
4 0
3 years ago
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How to do this question plz answer ​
harina [27]

9514 1404 393

Answer:

  300

Step-by-step explanation:

There are 25 ways to select the first student. After that student is removed from the selection pool for the second student, there are 24 ways to select the second student. This gives 25·24 = 600 ways to select 2 students <em>in a particular order</em>.

Since we don't care about the order, we can divide this number by the number of ways two students can be ordered: AB or BA, 2 ways.

  600/2 = 300

There are 300 ways to pick a combination of two students from 25.

__

<em>Additional comments</em>

This sort of selection (2 out of 25) has a formula for it, and an abbreviation for the formula.

 "n choose k" can be written nCk or C(n, k)

The function is a ratio of factorials:

  nCk = n!/(k!(n-k)!)

If you can typeset this, it is written ...

  \displaystyle\binom{n}{k}=\frac{n!}{k!\cdot(n-k)!}

This is different from the formula for the number of <em>permutations</em> of n things taken k at a time. That would be written nPk or P(n, k) = n!/(n-k)!.

5 0
2 years ago
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