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2 years ago

PLSSS HELPPP find the surface area of the regular pyramid ILL GIVE BRAINLIEST

Mathematics

1 answer:

lina2011 [118]2 years ago

5 0

Answer:

i know the answer to four just not 3 so you don’t have to mark me brainliest it’s 108.8153

Step-by-step explanation:

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The variables x and y are directly proportional, and y=2 when x=3. what is the value of y when x=9?

laiz [17]

X varies directly as y
x = ky
3 = 2k
k = $\frac{3}{2}$
when x =9
9 = $\frac{3}{2}$ y
$\frac{18}{3}$ = y
∴y = 6

please mark as brainliest

8 0

3 years ago

Read 2 more answers

Twelve less than a number is 50.

Katen [24]

Answer:

Step-by-step explanation:

another way to write this is

x - 12 = 50

the answer is 62

62 - 12 = 50

7 0

3 years ago

A colleague has been tutoring six students in 11th grade to prepare for the ACT. This colleague has asked you to evaluate the pe

marissa [1.9K]

We have been given that a colleague has been tutoring six students in 11th grade to prepare for the ACT. Student scores were as follows: 20, 18, 16, 15, 23, 20. We are asked to find the mean of the ACT scores.

We will use mean formula to solve our given problem.

$\text{Mean}=\frac{\text{Sum of terms}}{\text{Number of terms}}$

$\text{Mean}=\frac{20+18+16+15+23+20}{6}$

$\text{Mean}=\frac{112}{6}$

$\text{Mean}=18.66666$

Upon rounding to nearest whole number, we will get:

$\text{Mean}\approx 19$

Therefore, the mean of the ACT scores is 19 and option 'c' is the correct choice.

5 0

3 years ago

Brittany removed half of the total number of marbles from her bag, and gave one fourth of the remaining marbles to her friend. W

patriot [66]

The fraction of the total number of marbles is left in the bag after removing and giving part to her friend is 3/8

<h3>Fraction</h3>

let

Number of marbles in her bag = x
Number of marbles removed from her bag = 1/2x

Remaining marbles = x - 1/2x

= (2x-x) / 2

= x/2

= 1/2x

Number of marbles given to her friend = 1/4 of 1/2x

= 1/4 × 1/2x

= 1/8x

Number of marbles left in the bag = Remaining marbles - Number of marbles given to her friend

= 1/2x - 1/8x

= (4x-x) / 8

= 3x/8

= 3/8x

Learn more about fraction:

brainly.com/question/11562149

#SPJ1

3 0

1 year ago

HELP IAM BEING TIMED

MaRussiya [10]

Answer:

Step-by-step explanation:

given y = kx

To find k use the x and y values of the coordinate point given (- 5, 3)

k = $\frac{y}{x}$ = $\frac{3}{-5}$ = - $\frac{3}{5}$

7 0

3 years ago

Read 2 more answers