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3 years ago

Please fill the space below, read the question for details. there are also other pictures to help.

Mathematics

1 answer:

inna [77]3 years ago

4 0

32 total rows would be required. I simply did 800, which is 4 times 200, divided by 25, which is the amount of chairs I have each row, and I got 32. Hope this helps

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If 400ml of milk is used for 8 pancakes then how much is used for 6

Naddik [55]

To solve this equation, you will need to set up a proportion where you set two fractions equal to each other.

Let x = the unknown amount of milk

$\frac{400}{8} = \frac{x}{6}$

You would then crossmultiply and solve for x.

8x = 400(6)

8x = 2400

x = 2400/8

x = 300

You will need 300 mL of milk to make 6 pancakes if you previously needed 400 mL to make 8 pancakes.

3 0

3 years ago

A circular path runs around a circular plot. If the circumference of the plot and the path are 44m and 88m,respectively, find th

boyakko [2]

Answer:

7 meters

Step-by-step explanation:

circumference of path=88m

⇒2πr=88

⇒2.

.r=88

⇒r=14m

circumference of plot=44m

⇒2πr

′

=44

⇒2.

′

=44

⇒r

′

=7m

therefore width of path=r−r

′

=14−7

=7m

3 0

3 years ago

Solve the system of equations algebraically: x^2 +y^2 =25, y=x^2 +3

aalyn [17]

Answer:

${ \tt{ {x}^{2} + {y}^{2} = 25 - - - \{eqn(a) \}}} \\ { \tt{y = {x}^{2} + 3 - - - \{eqn(b) \} }}$

» substitute y in eqn(a) with y in eqn(b)

${ \tt{ {x}^{2} + ( {x}^{2} + 3) {}^{2} = 25}} \\ { \tt{ {x}^{2} + ( {x}^{2} + 6x + 9) = 25}} \\ { \tt{2 {x}^{2} + 6x + 9 = 25 }} \\ { \tt{2 {x}^{2} + 6x - 16 = 0}} \\ { \tt{x = 1.7 \: \: and \: \: - 4.7}}$