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djverab [1.8K]
3 years ago
6

Solve the problem 4y+3=19 using mental math​

Mathematics
2 answers:
Liula [17]3 years ago
6 0

Answer:

y=4

Step-by-step explanation:

4y + 3 =19

4y = 16

y= 4

Andrew [12]3 years ago
4 0
Answer to this question should be Y = 4
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A box contains 14 large marbles and 10 small marbles. Each marble is either green or white 8 of the large marbles are green, and
netineya [11]

The probability that the marble is large or white is 0.5714.

<h3>What is probability?</h3>

Probability is the branch of mathematics that studies the possible outcomes of given events together with the outcomes' relative likelihoods and distributions.

Probability of an event is

P(A) = Number of favorable outcomes/ Total Number of outcomes      

       = n(A)/n(S)

where

P(A) is the probability of an event “A”

n(A) is the number of favorable outcomes

n(S) is the total number of events in the sample space.

We have,

Number of large marbles = 14

Number of small marbles = 10

Number of large green marbles = 8 which implies

Number of large white marbles = 14 - 8 = 6

Number of small white marbles = 4 which implies

Number of small green marbles = 10 - 4 = 6.

Now, let

Let X be the event of drawing large marble.

Let Y be the event of drawing small marble.

Let M be the event of drawing white marbles.

Let N be the event of drawing green marbles.

Since only one marble is drawn at a time ,

so P(X) =  14/24

    P(Y) = 10/24

    P(M) = 10/24

    P(N) = 14/24

We have to find the probability that a marble is large or white i.e. P(X∪M).

P(X∪M) = P(X) + P(Y) - P(X∩M)

P(X∩M) = In 14 large marbles 6 are white marbles = 6/14.

P(X∪M) = P(X) + P(Y) - P(X∩M) = 14/24 + 10/24 - 6/14 = 0.5833+0.4167-0.4286 = 0.5714.

Therefore, the probability of drawing large or white marble is 0.5714.

To know more about probability, visit

brainly.com/question/19169117

#SPJ4

3 0
1 year ago
Which of the following is most likely the next step in the series?
REY [17]

Answer:

D

Step-by-step explanation:

blue and next line

7 0
3 years ago
adam put $100 in a savings account after 10 years he had $1649 in the account what rate of interest did he earn? use the formula
Nady [450]
Using the formula
ending amount is 1649=a
p=initial amount=100
t=10
r=r

so
1649=100e^{10r}
divide both sides by 100
16.49=e^{10r}
take ln of both sides
ln(16.49)=10r
divide both sides by 10
(ln(16.49))/10=r
use calculator
0.28027=r
about 28% interest
7 0
3 years ago
Read 2 more answers
The Pythagorean Theorem
PilotLPTM [1.2K]

Answer:

a²+b²=c²

Step-by-step explanation:

a= side of right triangle

b= side of right triangle

c= hypotenuse

5 0
3 years ago
Read 2 more answers
51pts! What is the factored form of this expression? 6x^2+5x-6=(_______)(______)
notsponge [240]
It should be (2x-3)x(3x+2)
4 0
3 years ago
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