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3 years ago

What is the value of w? 2/5 (w+5) = 4/5

Mathematics

2 answers:

tatyana61 [14]3 years ago

6 0

Answer:

w = - 3

Step-by-step explanation:

Given

$\frac{2}{5}$ (w + 5) = $\frac{4}{5}$

Multiply both sides by 5 to clear the fractions

2(w + 5) = 4 ( divide both sides by 2 )

w + 5 = 2 ( subtract 5 from both sides )

w = - 3

alex41 [277]3 years ago

3 0

Answer:

W = -3

Step-by-step explanation:

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A card is drawn from a standard deck of 52 playing cards. If the card is a club, a fair coin is flipped 9 times and the number o

olasank [31]

Answer: There are 18 elements in the sample space for this experiment

Step-by-step explanation:

Total cards = 52

Total outcomes on tossing a coin = 2 [1 head , 1 tail]

If the card is a club, a fair coin is flipped 9 times and the number of heads flipped is noted (but card drawn is not noted)).

Possible outcomes for heads = 0,1,2,...,9

So sample space for this event = {0,1,2,3,4,5,6,7,8,9}   (Total 10 elements )  (i)

If it is not a club, the coin is only flipped 3 times, but this time the result of each flip is noted(but card drawn is not noted).

Sample space with all possible outcomes ={TTT,TTH, THT, HTT, HTH,HHT,THH,HHH} (Total 18 elements ) (ii)

From (i) and (ii), Total elements in the sample space for this experiment = 10+8 = 18

Hence, there are 18 elements in the sample space for this experiment

4 0

3 years ago

..Urgent.. 600 students attend Ridgewood Junior High School. 10% of students bring their lunch to school everyday. How many stud

zysi [14]

Answer:

Number of student bring their lunch = 60

Step-by-step explanation:

Given:

Total number of student = 600

Student bring their lunch = 10%

Find:

Number of student bring their lunch

Computation:

Number of student bring their lunch = Total number of student x Student bring their lunch

Number of student bring their lunch = 600 x 10%

Number of student bring their lunch = 60

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2 years ago

Select the locations on the number line to plot the points 11 /4 and 19 /4 .

KIM [24]

Answer:

Step-by-step explanation:

6 0

3 years ago

Please help me solve this, and show your work

zlopas [31]

$6r+5=11r\ \ \ \ |\text{subtract 6r from both sides}\\\\5=5r\ \ \ \ |\text{divide both sides by 5}\\\\\boxed{r=1}\\-------------------------\\\dfrac{2x-4}{2}=6x+3\\\\\dfrac{2x}{2}-\dfrac{4}{2}=6x+3\\\\x-2=6x+3\ \ \ \ \ |\text{add 2 to both sides}\\\\x=6x+5\ \ \ \ |\text{subtract 6x from both sides}\\\\-5x=5\ \ \ \ \ |\text{divide both sides by -5}\\\\\boxed{x=-1}$

6 0

3 years ago

A slot machine has 3 slots. For each slot, the possible outcomes are an apple, orange, lemon, banana, melon, and a joker. When t

PolarNik [594]

Answer:

1. 15

2. 75

Step-by-step explanation:

The possible outcomes are an apple (A), orange (O), lemon (L), banana (B), melon (M), and a joker (J), 6 outcomes in total.

1. You could win with 2 jokers in

$5+5+5=15$ different ways.

You can list all these ways:

JJA JAJ AJJ

JJO JOJ OJJ

JJL JLJ LJJ

JJB JBJ BJJ

JJM JMJ MJJ

2. You could win with 1 joker in

$5\cdot 5+5\cdot 5+5\cdot 5=75$ different ways

You can list all these ways:

JAA JAO JAL JAB JAM

JOA JOO JOL JOB JOM

JLA JLO JLL JLB JLM

JBA JBO JBL JBB JBM

JMA JMO JML JMB JMM

AJA AJO AJL AJB AJM

OJA OJO OJL OJB OJM

LJA LJO LJL LJB LJM

BJA BJO BJL BJB BJM

MJA MJO MJL MJB MJM

AAJ AOJ ALJ ABJ AMJ

OAJ OOJ OLJ OBJ OMJ

LAJ LOJ LLJ LBJ LMJ

BAJ BOJ BLJ BBJ BMJ

MAJ MOJ MLJ MBJ MMJ

6 0

3 years ago