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2 years ago

Desperate Please Hurry Up

Mathematics

1 answer:

vaieri [72.5K]2 years ago

8 0

$\frac{2}{3} (y - x) = \frac{2}{3}(25 - 10) = \frac{2}{3} \times 15 =10$

Answer: 10

ok done. Thank to me :>

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For 4 weeks, William volunteered as a helper for swimming classes. The first week, he volunteered for 8 hours. He volunteered fo

frutty [35]

10.25 hours on average

8+12+12+9=41

41/4= 10.25

7 0

2 years ago

Write the following series in sigma notation.<br> 7 + 16 + 25 +34 +43 +52 + 61

Solnce55 [7]

The series 7 + 16 + 25 +34 +43 +52 + 61 is an illusration of arithmetic series

The sigma notation of the series is: $\sum\limits^7_{n=1} {9n - 2}$

<h3>How to write the series in sigma notation?</h3>

The series is given as:

7 + 16 + 25 +34 +43 +52 + 61

The above series is an arithmetic series, with the following parameters

First term, a = 7
Common difference, d = 9
Number of terms, n = 7

Start by calculating the nth term using:

a(n) = a + (n - 1) * d

This gives

a(n) = 7 + (n - 1) * 9

Evaluate the product

a(n) = 7 - 9 + 9n

Evaluate the difference

a(n) = 9n - 2

So, the sigma notation is:

$\sum\limits^7_{n=1} {9n - 2}$

Read more about arithmetic series at:

brainly.com/question/6561461

3 0

2 years ago

I cant remember this its not a test but i have more questions can someone pleas help

USPshnik [31]

Here, take any points (0, -2) ((1, -6)
Now, slope (m) = -6 - (-2) / 1 - 0 = -6+2 / 1 = -4

Now, y - y1 = m(x - x1)
y - (-6) = -4(x - 1)
y + 6 = -4x + 4
y = -4x - 2

In short, Your Equation would be y = -4x - 2

Hope this helps!

8 0

2 years ago

A 54-kg jogger is running at a rate of 3 m/s. What is the kinetic energy of the jogger? A. 18 J B. 81 J C. 162 J D. 243 J

Wewaii [24]

$\displaystyle\bf\\\text{\bf kinetic energy}=\frac{mv^2}{2}=\frac{54\times3^2}{2}=27\times9=\boxed{\bf243~J} \\\\\text{\bf Correct answer: D.}$

4 0

3 years ago

Read 2 more answers

Melvin is building a castle with a series of towers out of blocks. Each tower has twice as many blocks as the previous tower, an

Aneli [31]

X^2+2x+3+2(x^2+2x+3)+3+4(x^2+2x+3)+6+8(x^2+2x+3)+9+16(<span>x^2+2x+3)+12
add that up and you will get your answer and you get </span><span>31x²+62x+123</span>

8 0

3 years ago