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9966 [12]
3 years ago
8

Please help 20 points!

Mathematics
1 answer:
anastassius [24]3 years ago
7 0

Answer:

1717171717171771717171717 i use to own this acc till i forgot pw

Step-by-step explanation:

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Pls help me on this!
kupik [55]

Answer:

C) 1/25

Step-by-step explanation:

In the denominator the term is 5^2, which equals 25. Therefore you're left with 1/25

8 0
3 years ago
Find two consecutive even integers such that the square of the first, decreased by the second is 130
marta [7]
Let's make the first even integer m and the second even integer n. The square of the first, decreased by the second is 130 is:

m^{2}-n=130  ---> Add n to each side
m^{2}=130+n ---> Take the square root of each side
m=±\sqrt{130+n}

Let's look at the first square number above 130, which is 12^{2}. <em>m</em> is 12, therefore the next consecutive even integer is 14.

12^{2}=144
144-14=130

The two consecutive integers are 12 and 14
5 0
4 years ago
Jake ate 1/6 of the chocolates the Jill came ate 1/5 of the remaining then mike ate 1/4 of the remaining then Sara ate 1/3 of th
ahrayia [7]

Answer:

  4 chocolates

Step-by-step explanation:

Before Luke started eating, there were 8. This is 2/3 of what Sara had to start with, so she started with 12. That is 3/4 of what Mike started with, so he started with 16.

Jill left 4/5 of what she started with, so she must have started with 20. Jake ate 1/6 and left 5/6, so 20 is 5 times the number Jake ate.

Jake ate 4 chocolates.

___

Jill ate 4; Mike ate 4; Sara ate 4; and Luke ate 4.

3 0
4 years ago
Simplify : 6/7 of 5/9 ÷ 10/21​
elena55 [62]

Answer:

Step-by-step explanation:

Don’t know

5 0
3 years ago
Read 2 more answers
A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equati
lidiya [134]

Answer:

Total number of points in the test = 100

Total number of items in the test = 40

Let number of items of 2 points be x and number of items of 3 points be y.

Now, using the given information the situation can be represented by using the following equations :

⇒ x + y = 40 .........(1)

⇒ 2x + 3y = 100 .........(2)

The matrix equation is :

\begin{bmatrix}1 & 1\\ 2& 3\end{bmatrix}\cdot \begin{bmatrix}x\\ y\end{bmatrix}=\begin{bmatrix}40\\ 100\end{bmatrix}

By solving the equation (1) and equation (2), we get :

Solution : x = 20 and y = 20

4 0
4 years ago
Read 2 more answers
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