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3 years ago

Which figure has 90 degrees rotational symmetry?

Mathematics

2 answers:

GaryK [48]3 years ago

7 0

where is the picture

Tom [10]3 years ago

5 0

A square because 360 decided by 4 is 90

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5x+2y=24 and 8x+2y=30

larisa86 [58]

Answer:

x = 2

y = 7

Step-by-step explanation:

5x+2y=24 -------------->equ 1

8x+2y=30 -----------> equ 2

equ 1 - equ 2 =====> -3x = - 6

x = -6 / -3 = 2

x = 2

Put x = 2 in equ 1,

5*2 + 2y = 24

10 + 2y = 24

2y = 24 - 10

2y = 14

y = 14/2

y = 7

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3 years ago

For 1 bath its 2 liter so how many liers is it for 2 baths

lara [203]

Answer:

Step-by-step explanation:

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3 years ago

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Simple Inequalities:

Dimas [21]

I think it is the first option. hope this helps :)

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3 years ago

HELP WITH #2 PLEASEEE

Shtirlitz [24]

ILL HELP IF YOU HELP ME I NEED HELP ALSO

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3 years ago

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7th Grade Math <br><br> Need help with both 6 and 7

barxatty [35]

Answer:

Part 6)

case a) $P(odd)=\frac{1}{2}=0.5=50\%$

case b) $P(less\ than\ 3)=\frac{0}{8}=0=0\%$

Part 7)

case a) $P(yellow)=\frac{3}{20}=0.15=15\%$

case b) $P(green\ and\ red)=\frac{1}{20}=0.05=5\%$

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.

The size of the sample space is the total number of possible outcomes

The event space is the number of outcomes in the event you are interested in.

Let

x------> size of the event space

y-----> size of the sample space

$P=\frac{x}{y}$

Part 6)

case a) P(odd)

In this problem we have

$x=4$

$y=8$

substitute

$P=\frac{4}{8}=\frac{1}{2}=0.5=50\%$

case b) P (less than 3)

In this problem we have

$x=0$

$y=8$

substitute

$P=\frac{0}{8}=0=0\%$

Part 7)

case a) P(yellow)

In this problem we have

$x=3$

$y=20$

substitute

$P=\frac{3}{20}=0.15=15\%$

case b) P(green and red)

$P(green)=\frac{5}{20}$

$P(red)=\frac{4}{20}$

therefore

$P(green\ and\ red)=\frac{5}{20}*\frac{4}{20}=\frac{20}{400}=\frac{1}{20}=0.05=5\%$

8 0

3 years ago