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leonid [27]
3 years ago
15

There are 2 green,5 yellow, 6 red,and 7 blue marbles in a bag. Erin picks one marble from the bag without looking. What is the p

robability she will pick a marble out of the bag that is blue?
a) 7% b) 20% c) 35% d) 54%
Mathematics
1 answer:
Svetach [21]3 years ago
7 0

Answer:

c 35%

Step-by-step explanation:

2 green,5 yellow, 6 red,and 7 blue marbles

2+5+6+7 = 20 marbles

P(blue) = blue marbles / total marbles

             = 7/20

              = 35/100

               =35%

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One number is 6 more than twice another. If their sum is 51, find the numbers.
joja [24]

Answer:

y=2x+6 ; x+y=51

Step-by-step explanation:

assuming x is one number and y is the other -

one number (y) is 6 more (+6) than twice another (2x) -

using that knowledge we form an equation -

y=2x+6

the sum (x+y) is 51

using this knowledge we can make the equation -

x+y=51

now you have -

y=2x+6 or 2x-y=-6

x+y=51

using system of equations -

you add the equations -

3x=45

x=15

y=51-x => y=36

hope this helps!!

7 0
3 years ago
Help once more please
REY [17]

Answer:

84

Step-by-step explanation:

they are all equal sides so what you'd do is 28+28+28= 84

5 0
3 years ago
Read 2 more answers
Please help the problem is in the picture provided below.
Nadya [2.5K]

Answer:

sorry I don't know

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone help me with this math problem please and thank you. :-)
jok3333 [9.3K]

Triangle ABE is isosceles  / Given

AB congruent to AE     / Def isosceles

angle ABE congruent to angle AEB   / Property of isosceles triangles

angle ABD congruent to angle AEC   / Subst different name for same angles

BD congruent to EC     / Given

triange ABD congruent to triange AEC    / Side Angle Side

5 0
3 years ago
Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining Bismuth-210 transforms i
Luden [163]

Answer:

Approximately 76.5 mg.

Step-by-step explanation:

Given,

The initial quantity of the Bismuth-210, P = 233 mg,

Also, the rate of decay per day, r = 13 %

Thus, the quantity of the Bismuth-210 after 8 days would be,

A=P(1-\frac{r}{100})^8

=233(1-\frac{13}{100})^8

=233(1-0.13)^8

=233(0.87)^8

=76.4733194697

\approx 76.5\text{ mg}

3 0
3 years ago
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