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2 years ago

9

Need help ASAP Will make you brainlist

1 answer:

lara31 [8.8K]2 years ago

5 0

Answer:

B

Step-by-step explanation:

I am not that sure but I tried... :)

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Find the mode (if any) of the list of data.<br> 13, 13, 15, 15, 13, 14, 15, 13

iogann1982 [59]

Answer:

13

Step-by-step explanation:

There is the largest quantity of '13' in the list of data. Hence, 13 is the mode of the list of the data.

3 0

3 years ago

The face of the triangular concrete panel shown has an area of 22 square meters, and its base is 3 meters longer than twice its

Elodia [21]

Answer:

The length of the base is 11 meters.

Step-by-step explanation:

The diagram of the triangle is not shown; However, the given details are enough to solve this question.

Given

<em>Shape: Triangle</em>

<em>Represent the height with h and the base with b</em>

$b = 3 + 2h$

$Area = 22$

Required

Find the length of the base

The area of a triangle is calculated as thus;

$Area = \frac{1}{2} * b * h$

Substitute 22 for Area and 3 + 2h for b

The formula becomes

$22 = \frac{1}{2} * (3 + 2h) * h$

Multiply both sides by 2

$2 * 22 = 2 * \frac{1}{2} * (3 + 2h) * h$

$44 = (3 + 2h) * h$

Open the bracket

$44 = 3 * h + 2h * h$

$44 = 3h + 2h^2$

Subtract 44 from both sides

$44 - 44 = 3h + 2h^2 - 44$

$0 = 3h + 2h^2 - 44$

Rearrange

$0 = 2h^2 +3h - 44$

$2h^2 +3h - 44 = 0$

At this point, we have a quadratic equation; which is solved as follows:

$2h^2 +3h - 44 = 0$

$2h^2 + 11h - 8h - 44 = 0$

$h(2h + 11) - 4(2h + 11) = 0$

$(h - 4)(2h + 11) = 0$

Split the above

$(h - 4) = 0\ or\ (2h + 11) = 0$

$h - 4 = 0\ or\ 2h + 11 = 0$

Solve the above linear equations separately

$h - 4 = 0$

Add 4 to both sides

$h - 4 + 4 = 0 + 4$

$h = 0 + 4$

$h = 4$ ---- <em>First value of h</em>

$2h + 11 = 0$

Subtract 11 from both sides

$2h + 11 - 11 = 0 - 11$

$2h = 0 - 11$

$2h = -11$

Divide both sides by 2

$\frac{2h}{2} = -\frac{11}{2}$

$h = -\frac{11}{2}$ <em> ------ Second value of h</em>

Since height can be negative, we'll discard $h = -\frac{11}{2}$

Hence, the usable value of height is $h = 4$

Recall that $b = 3 + 2h$

Substitute 4 for h

$b = 3 + 2(4)$

$b = 3 + 8$

$b = 11$

Hence, the length of the base is 11 meters

3 0

3 years ago

What is the equation for the graph below?

andriy [413]

Answer:

y=-log5(x)

Step-by-step explanation:

www!desmos!com/calculator

online graphing calculator. replace the ! for .

3 0

3 years ago

Solve 5x - 2 = 13.<br> Please be quick

IceJOKER [234]

Answer:

C. 3

Step-by-step explanation:

5x - 2 = 13

5x = 15

x = 15 ÷ 3

x = 3

8 0

3 years ago

Read 2 more answers

How do you graph y= -4x with an exponent of 2

ololo11 [35]

Answer:

Go to Desmos.com

Step-by-step explanation:

If you go to Desmos.com and type in the equation, it will graph it for you.

8 0

3 years ago