3 years ago

Surface area assignment pyramids help!

1 answer:

3 0

2B + Ph is the formula and to find the B you multiply h and b then divide by 2. * Disclaimer * the h you multiply is not the h in the formula.

You might be interested in

Hw is stressingg help meeee

Vadim26 [7]

B. 27.5%

because it says ‘all students,’ you look at the total, which is 55/200

and then you need to half that to get it out of 100, so 55/2=27.5

5 0

3 years ago

An unknown number decreased by six

FinnZ [79.3K]

It would be a variable minus 6 so for example n-6

3 0

4 years ago

Jake is planting flowers in his garden. For every group of 25 flowers that he plants, 10 are lilies and 15 are tulips. Which sta

Novay_Z [31]

Answer:

Out of every 25 flowers, there are 10 lilies.

Step-by-step explanation:

7 0

3 years ago

7 Aiden volunteers on the weekend at the central ledbury as a school project to record how many people visit the library and whe

Masteriza [31]

Answer:

487?

Step-by-step explanation:

3 0

3 years ago

How to solve the question

Scorpion4ik [409]

You have the equations set up correctly. I will use r and b as the variables to make it easier to follow.

12r + 8b = 70
20r + 12b = 110

First let's solve one of the equations for one of the variables.

12r = 70 - 8b

$r = \frac{70-8b}{12}$

Now plug that in for r in the second equation.

$20( \frac{70-8b}{12})+12b = 110$

Simplify

$20(70-8b)+144b=1320$

$1400-160b+144b=1320$

$-16b = -80$

b = 5 grams

Now plug 5 in for b in one of the original equations to find r.

12r + 8(5) = 70

12r = 30

r = 2.5 grams

So the red marbles weigh 2.5 grams, and the blue marbles weigh 5 grams.

3 0

4 years ago