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3 years ago

(7th grade math) 20% of what number is 30?

Mathematics

1 answer:

Akimi4 [234]3 years ago

3 0

Answer:

150

Step-by-step explanation:

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5 points

Lemur [1.5K]

Answer:

6x + 25 ≤ 135

Step-by-step explanation:

Maximum amount to spend = $135

Boxes of popcorn = 2

Boxes of candy = 3

Cost per box of popcorn = $6

For 3 boxes = $6 * 3 = $18

Cost per box of candy = $3.50

For 2 boxes = $2 * 3.50 = $7

Item cost = Cost of candy and popcorn = $18 + $7 = $25

Ticket price = $6

Inequality to find number of friends ;

Let number of friends = x

Ticket cost = 6x

Hence ;

Ticket cost + item cost ≤ 135

6x + 25 ≤ 135

5 0

2 years ago

Find the shape of the area below.<br> Please thank you

xenn [34]

Answer:

i cant see the picture

Step-by-step explanation:

post it again

7 0

3 years ago

PLEEEAAAASSSEEE HELLLP!!!<br>I WILL GIVE BRAINLIEST

Anettt [7]

The answer is the bottom one with 8/ (x^4 p^9 y^8)

Thanks for the fun question !! :D

7 0

3 years ago

The letters r and Θ represent polar coordinates. perform the following.

nexus9112 [7]

Answer:

$\boxed{(x - \frac{1 }{ 2})^{2} + y^{2} = \frac{21 }{ 4}}\\$

Step-by-step explanation:

$r = \frac{5}{r - cos\theta}\\r^{2} - rcos\theta = 5\\\\$

$\text{Use the relationships}\\r^{2} = x^{2} + y^{2}; cos\theta = \frac{ x}{r }\\$

$\begin{array}{ll}x^{2} + y^{2} - r(\frac{x }{r }) = 5 & \text{Made the substitutions } \\x^{2} + y^{2} - x = 5 & \text{Simplified } \\x^{2} -x + y^{2} = 5 & \text{Rearranged } \\x^{2} -x + \frac{1 }{ 4} + y^{2}= 5 + \frac{1 }{ 4} & \text{Completed the square } \\(x - \frac{1 }{ 2})^{2} + y^{2}= \frac{21 }{ 4} & \text{Wrote as sum of squares} \\\end{array}\\\\$