3 years ago

16. Keisha has a bag that contains 3 red, 2 orange, 1 yellow, and 2 purple marbles. She will

Mathematics

1 answer:

o-na [289]3 years ago

5 0

Answer:

1/4

Step-by-step explanation:

you add 3+2=5+2=7+1=8 which is the total amount 8. Then the question is asking What is the probability that Kelsha will choose

an orange marble then the orange marble is 2 which is 2/8. Then simplify 2/8 get to 1/4.

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I really need help right now someone help pls!!!

Ray Of Light [21]

The answer would be 120 degrees

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3 years ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

azamat

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

8 0

2 years ago

Alex’s paycheck for the last two weeks totaled $239.64. He owes the cell phone company $45.87. How much money does he have left?

enyata [817]

239.64-45.87=193.77 the answer is $193.77

4 0

3 years ago

Please help (no links or you will reported)

goblinko [34]

Answer:

16 rolls of ribon

Step-by-step explanation:

C = Dπ

d = r x 2

d = 100 x 2

d = 200

C = 200 x 3.14

C = 628

628 / 40 = 15.7

she should buy 16 rolls

3 0

3 years ago

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Please help! 51 points!

tekilochka [14]

Answer:

1 = 0.5 2 = 4.3 3= 9.4 4= 12.04

Step-by-step explanation:

Divide.

6 0

3 years ago

Read 2 more answers