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3 years ago

14

PLEASE help. The problem is to find the indicated sum.

1 answer:

alukav5142 [94]3 years ago

8 0

The indicated sum is 350. The answer is 350 because the E or sigma is making you do (6j+2) ten times. Every time you do 6j+2 you start with j as 1 and add a 1 to j for every time you add. For example, [6(1)+2]+[6(2)+2]+[6(3)+2]...[6(10)+2].

Hope this helps.

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What is the zero (x intercept) of the following equation y = 2/5x + 5

Inga [223]

The x intercept is the x value when y is 0.
So,
0 = 2/5x + 5
-5 = 2/5x
-25 = 2x
The x intercept is -25/2.

3 0

3 years ago

Bill is making a garden that is twice as long as it is wide.

Cloud [144]

Answer:

The equation that best represent the situation is;

x^2 = 576

or x^2 -576 = 0

Step-by-step explanation:

Here, we want an equation that best represent the given information in the question.

The length of the garden is twice as long as it is wide

So, given that x is the length of the garden, then x/2 will represent the width of the garden

From the description given in the question, the garden would be rectangular in shape.

Mathematically, the area of a rectangle can be calculated using the formula;

L * B = area

Thus;

x * x/2 = 288

x*2 = 2 * 288

x^2 = 576

5 0

3 years ago

calculate the power of the pump which can lift 400kg of water to be stored in a water tank at a height of 19m and 40s (take g=10

iren [92.7K]

Hi, here it is !
I hope this help...

5 0

3 years ago

If 2x + 5 = 8x, then 12x = ?A.5B.10C.15D.20

butalik [34]

<h2>Answer:</h2> $10.\text{ Option B is correct}$

<h2>Explanation:</h2>

Given the equation expressed as:

$2x+5=8x$

First, we need to calculate the value of "x" from the given expression.

Step 1: Given the equation 2x + 5 = 8x

Step 2: Subtract 5 from both sides:

$\begin{gathered} 2x+5-5=8x-5 \\ 2x+\cancel{5}-\cancel{5}=8x-5 \\ 2x=8x-5 \end{gathered}$

Step 3: Subtract 8x from both sides

$\begin{gathered} 2x-8x=8x-8x-5 \\ -6x=\cancel{8x}-\cancel{8x}-5 \\ -6x=-5 \end{gathered}$

Step 4: Divide both sides by -6

$\begin{gathered} \frac{-6x}{-6}=\frac{-5}{-6} \\ x=\frac{5}{6} \end{gathered}$

Step 5: Get the value of 12x. Substitute x = 5/6 into the expression to have:

$\begin{gathered} 12x=12(\frac{5}{6}) \\ 12x=\cancel{12}^2(\frac{5}{\cancel{6}^1}) \\ 12x=2\times5 \\ 12x=10 \end{gathered}$

Therefore the value of 12x is 10

3 0

1 year ago

Someone please help asap!!!!! difference of squares

AnnZ [28]

Answer:

The answer to your question is: the last option

Step-by-step explanation:

m² - 6m + 6m -36

Simplify like terms m² - 36

Factor (difference of squares) (m + 6) (m - 6)

4 0

3 years ago