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2 years ago

What is the answer of question 1

Mathematics

1 answer:

jeyben [28]2 years ago

7 0

Answer: don't know sorry

Step-by-step explanation:

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2 years ago

The school you want to go to has an acceptance rate of 15%. That means that 15% of the students who apply to the school get in.

lisov135 [29]

12,000 Students Applied...

To find the answer, consider that for every 1000 students that apply, 150 students are accepted.

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2 years ago

-5x +3y +6z=4<br> -3x + y + 5z=-5<br> -4x + 2y + z= 13

lozanna [386]

See the attached image for solution:

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2 years ago

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2 times what equals 36?

Tanya [424]

18 ,2x18=36 hope i helped

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2 years ago

Write the sum using summation notation, assuming the suggested pattern continues. -9 - 4 + 1 + 6 + ... + 66

Ipatiy [6.2K]

Answer:

Summation notation is:

$\sum_{n=1}^{16}[5(x-1)-9]$

If you prefer it a little more simplified:

$\sum_{n=1}^{16}(5x-14)$

Step-by-step explanation:

First my favorite part, finding a pattern between the consecutive terms.

This is an arithmetic series because the terms are going up by 5 each time.

So arithmetic sequence, think linear equations:

x | y

1 -9

2 -4

3 1

4 6

..................

n 66

We are going to have to find that n but will will eventually...

The equation for a line in point slope form is $y-y_1=m(x_x_1)$ where $(x_1,y_1)$ is a point on the line and m is the slope.

We are already have the slope is 5 (the slope is the common difference in arithmetic sequence).

I'm going to use the first point (1,-9).

So the equation in point slope form is $y-(-9)=5(x-1)$

Subtract 9 on both sides:

$y=5(x-1)-9$

Now we need to know how many terms we are adding so what is x if y=66.

$66=5(x-1)-9$

Add 9 on both sides:

$75=5(x-1)$

Divide both sides by 5:

$15=x-1$

Add 1 on both sides:

$16=x$

We have 16 terms in this sequence where the 16th term is 66.

Summation notation is:

$\sum_{n=1}^{16}[5(x-1)-9]$

You could simplify the 5(x-1)-9.

Distribute: 5x-5-9

Add like terms: 5x-14

3 0

2 years ago

Read 2 more answers