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VMariaS [17]
3 years ago
6

J/2--12=15 j/2 is a fraction

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
3 0

Answer:

j = 54

Step-by-step explanation:

j/2 - 12 = 15

j/2 = 15 +12

j/2 *2  = 27 * 2

j = 54

If you're kind enough, please mark this as the brainlist answer!

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Please help me with question b) and please explain!!<br>look at the attached image
natta225 [31]

Answer:

17

Step-by-step explanation:

let x be the number of boxes to be shaded to make it 80%

x = 80% of total number

= 80/100 of 25

= 80/4

= 20

So 20 need to be shaded to fill 80%

Now, 13 of the grids are already shared so the amount of more squares that need to be shaded = 20-13

= 17 squares

4 0
3 years ago
Read 2 more answers
A student solves a problem correctly 40 times out of 72 tries. Based on this data, what is the probability that the student inco
suter [353]

Answer:

The probability of the student incorrectly solves the next problem is 44%.

Step-by-step explanation:

Let E be the event of solving a problem correctly.

Then E' is the event that the problem is solved incorrectly.

Now, recall the definition of probability.

probability of an event = \frac{number of favorable events}{total number of events}

So,

p(E) = \frac{40}{72}

Also,

p(E) + p(E') = 1 and

p(E') = 1 - p(E)

= 1 - \frac{40}{72}

= \frac{72-40}{72}

= \frac{32}{72}

= \frac{4}{9}

= \frac{4}{9} (100)

= 44% rounded.

Hence, the probability of the student incorrectly solves the next problem is 44%.


4 0
3 years ago
Notebooks cost $1.20 each. This weekend they will be on sale for $0.80. What percentage is the sale?
nexus9112 [7]
33% off you are paying 66%
6 0
2 years ago
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Gabrielle was out at a restaurant for dinner when the bill came. His dinner came to $20. After adding in a tip, before tax, he p
KATRIN_1 [288]

Answer:

75%

Step-by-step explanation:

6 0
3 years ago
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Solve the quadratic equation y^2-2y-35=0
soldier1979 [14.2K]

Hello,

To solve we need to factor y^2-2y-35:

(y-7)(y+5)=0

Now solve for :

(When will (y-7)(y+5)equal zero?)

When y-7=0 or y+5=0

Solve for the 2 equations above and;

y= 7,-5

Hope this helps, have a great day!



6 0
3 years ago
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