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icang [17]
3 years ago
5

Please answer quickly, it’s inequalities and it’s very confusing.

Mathematics
1 answer:
disa [49]3 years ago
7 0

Answer:

A

Step-by-step explanation:

It is A, because it tells you the equation of

-5x + 8 ≥ -7

Because the key on the right tells you that shaded squares are negative and white ones are positive.

You can then subtract both sides by 8 to isolate the -5x and the equation becomes:

-5x ≥ -7 - 8

Which simplifies to

-5x ≥ -15

which you can now divide both sides by -5 to get

x ≥ 3

BUT WAIT

the general rule is that when you divide a variable (in this case x) by a negative number, you have to flip the inequality sign

so ≥

should become ≤

so the equation is x ≤ 3

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11. What is the third term of the recursive sequence below? a1=-6 an=1/2an-1-n<br> Hurryy plzzz
AlexFokin [52]

Answer:

a

Step-by-step explanation:

a_{1} = -6\\\\a_{n}=\frac{1}{2}a_{n-1} - n\\\\a_{2}=\frac{1}{2}a_{1}-2\\\\  = \frac{1}{2}*(-6)-2\\\\ = -3 - 2\\\\= -5\\\\a_{3}=\frac{1}{2}a_{2}-3\\\\= \frac{1}{2}*(-5)-3\\\\=\frac{-5}{2}-3\\\\= \frac{-5}{2}-\frac{3*2}{1*2}\\\\=\frac{-5}{2}-\frac{6}{2}\\\\=\frac{-11}{2}

5 0
3 years ago
Find the 5 number summary for the data shown x 3.1 10.2 12 12.1 12.2 15.3 27.9 30
Kazeer [188]

Answer:

  Min.     1st Qu.    Median      Mean       3rd Qu.        Max.  

  3.10     11.55       12.15        15.35        18.45         30.00

Step-by-step explanation:

The five-number summary includes five things that are:

1. Minimum Value

2. First Quartile (Q₁)

3. Median

4. Third Quartile (Q₃)

5. Maximum Value

So,  

1. Minimum Value = 3.10

It can be found by arranging the data in ascending order, the first value we will get is the minimum value.

2. First Quartile is the middle value between Minimum value and Median of data after arranging data in ascending order.

First Quartile (Q₁) = 11.55

3. Median is the middle value of the data after arranging them in ascending order.  

Median = 12.15

4. The third Quartile is the middle value between Median and Maximum Value of data after arranging data in ascending order.

Third Quartile (Q₃) = 18.45

5. Maximum Value is the largest value of the data or is the last value after arranging the data in ascending order.

Maximum Value = 30.

Percentiles are mostly use in very large data. Here n percent of data shows the nth percentile.

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4 years ago
Why was Mexico considered a single-party state?
otez555 [7]

Answer:

because it voted to be independent from america

Step-by-step explanation:

8 0
4 years ago
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Answer this plz!!!!!!!!!!
belka [17]

That's a trapezoid,

A = \frac 1 2 (b+B)h

A = \frac 1 2 (4+12) 4 = 32

Answer: 32

But say we didn't know the formula. We can chop out the 4 by 4 square and we have two 45/45/90 triangles side 4 left over, so two 4 by 4 squares,

A = 2(4)(4) = 32

We can think of this as 12 by 4 rectangle with two 4 by 4 right triangles chopped out:

A = 12(4) - 2(1/2)(4)(4) = 48 - 16 = 32


7 0
3 years ago
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