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liq [111]
3 years ago
11

The length of the rectangle is twice the width. Find the length of the rectangle if the perimeter is 42m.

Mathematics
1 answer:
kompoz [17]3 years ago
8 0

Answer:

28m

Step-by-step explanation:

2x+x=42

3x=42

x=14

However, since the length of the rectangle is twice the width, we'll need to multiply it by 2.

So: 14 times 2=28

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Find the circumference of a circle if the area is 300 square centimeters.
mr Goodwill [35]

So the formula for a circle is Pie * r^2

If you divide 300 by pie and then Square root it you would get your radius

And once you have the radius you would use the equation of 2pie * r to find the circumfrence.

Answer is 61.38

Hope this helps!



4 0
3 years ago
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You have a bag of 14
AlekseyPX

Answer:

30% or 30/100

Step-by-step explanation:

14+15+9+12= 50 Jelly beans total

yllow- 15

15/50=30/100= 30%

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A cell phone store sells the basic model of a phone for $30 and the upgraded model for $100 when a customer signs a two-year agr
mixer [17]
<span>You need to set up 2 equations for this, a system to be exact let x represent the cheaper phone and y represent the upgraded phone for store costs you will have 5x+25y=200 for selling prices you will have 30x+100y=900 set these two equations together 5x+25y=200 30x+100y=900 multiply the first one by -4 and add them -20x-100y=-800 30x+100y=900 10x=100 x=10 10 cheaper phones, plug into any equation again 5(10)+25(y)=200 y=6<<<6 upgraded phones</span>
3 0
3 years ago
PLEASE HELP GIVING 25 POINTS!! -3x + 12 &lt; 18
Volgvan

Answer:

x > -2

Step-by-step explanation:

-3x + 12 < 18

Subtract the 12 from both sides and you'll get:

-3x < 6

Divide by -3

x > -2

You flip the sign when you mulitply by a negative number

Hopefully this helps, sorry if it doesn't

8 0
3 years ago
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An 8-sided fair die is rolled twice and the product of the two numbers obtained when the die is rolled two times is calculated.
ELEN [110]

Answer:

(a)

\left[\begin{array}{ccccccccc} &1&2&3&4&5&6&7&8\\1&1&2&3&4&5&6&7&8\\2&2&4&6&8&10&12&14&16\\3&3&6&9&12&15&18&21&24\\4&4&8&12&16&20&24&28&32\\5&5&10&15&20&25&30&35&40\\6&6&12&18&24&30&36&42&48\\7&7&14&21&28&35&42&49&56\\8&8&16&24&32&40&48&56&64\end{array}\right]

(b)

(i)probability that the product of the two numbers is a prime number=7/64

(ii)probability that the product of the two numbers is not a perfect square=56/64

(iii)probability that the product of the two numbers is a multiple of 5 =15/64

(iv)probability that the product of the two numbers is Less than or equal to 21 =40/64

(v) probability that the product of the two numbers is divisible by 4 or 6 =42/64

Step-by-step explanation:

(a) 8-sided fair die implies each die can have outcomes 1,2,3,4,5.6,7,8 with equal chances.

To draw the possibility diagram of the product of the two numbers appearing on the die in each throw, we put the outcomes of both dies side by side and find the product of possible outcomes.

(b) probability= Number of outcome / Total number of outcomes

(i)probability that the product of the two numbers is a prime number=8/64=1/8

based on sample space, the prime numbers are 2,2,3,3,5,5,7,7

(ii)probability that the product of the two numbers is not a perfect square=56/64=7/8

based on sample space, only  1,4,9,16,25,36,49,64 are perfect square

(iii)probability that the product of the two numbers is a multiple of 5 =15/64

(iv)probability that the product of the two numbers is Less than or equal to 21 =40/64=5/8

(v) probability that the product of the two numbers is divisible by 4 or 6 =42/64=21/32

6 0
3 years ago
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