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lianna [129]
3 years ago
6

2. y - 8 = 15 y -0 =

Mathematics
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

23

Step-by-step explanation:

I'm going to start by solving the first equation like so,

y - 8 = 15        (Remember what we do to one side we MUST do to the other)

<u>  +8    +8 </u>

y = 23

So know we know y = 23  What we have to do now is replace 23 for y in the second equation.

y - 0 = ?

23 - 0 = 23  

Hope that helps and have a great day!

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Part A
Vilka [71]

Answer:

answer is c

Step-by-step explanation:

oranges in Paris are three cups and grapes and apples are about two cups. (1 11/12 cups to be exact)

the exact amount of five portions of fruit salad and fraction form is 59 / 60

7 0
2 years ago
7. Slips are drawn form a box containing 100 slips written with numbers 1 to 100. If three slips are
Svetradugi [14.3K]

Answer:

D

Step-by-step explanation:

We need the numbers of each before we can calculate the probability

Number of even numbers are 50

Number of odd numbers are 50

Number of perfect squares;

1 , 4 , 9 , 16 , 25 , 36 , 49 , 64 , 81 and 100

10 perfect squares

Probability of selecting even = probability of selecting odd = 50/100 = 1/2

Probability of selecting a perfect square = 10/100 = 1/10

Thus, the probability of having the draws in the other stated in the question will be;

1/2 * 1/2 * 1/10 = 1/40

7 0
3 years ago
A diamond can be classified as either gem-quality or industrial-grade. 80% of diamonds are classified as industrial-grade.
mote1985 [20]

Answer:

a) 0.64

b) 0.21

c) 0.79

Step-by-step explanation:

Percentage of industrial-grade diamonds = 80%

This means, if one diamond is chosen at random, there is 80% chance that it will be of industrial-grade. So,

P(Industrial grade) = 80% = 0.80

Part a)

Probability that 1st diamond is industrial-grade = 0.80

Since, selection of diamonds in independent, the probability that 2nd diamond is also industrial grade = 0.80

The overall probability of both diamonds being industrial-grade will be the product of their individual probabilities, according to the fundamental rule of counting.

So, if two diamonds are chosen at random, the probability that both are industrial grade = 0.80 x 0.80 = (0.80)² = 0.64

Part b)

Following the same logic as we followed in the previous part.

The probability of each of the 7 diamonds being industrial-grade is 0.80, so the probability that all 7 are industrial grade will be:

Probability = 0.80 x 0.80 x 0.80 x 0.80 x 0.80 x 0.80 x 0.80 = (0.80)^{7} = 0.21

So, if 7 diamonds are chosen at random, the probability that all 7 are industrial grade is 0.21.

Part c)

The event "at least one" is complement of event "none". So, the event "at least one of 7" will be complement of "none of the 7"

If none of the selected diamonds is gem quality, this means all 7 of the diamonds are industrial-grade. So,

The probability that none of the diamonds is gem-quality = The probability that all 7 are industrial-grade = 0.21

So,

The probability that at least one of the 7 selected diamonds is gem-quality = 1 - Probability that none is gem-quality

= 1 - 0.21

= 0.79

Since the probability that atleast one of the 7 randomly selected diamonds is gem-quality is greater than 0.05, it won't be unusual event.

3 0
3 years ago
Solve the follwoing questions: a. 17 x 10 = b. 24 x 100 = c. 6 x 1000 =
Allushta [10]

Answer:

a. 17 x 10 = 170

b. 24 x 100 = 2,400

c. 6 x 1000 = 6000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help...............................
nadezda [96]
The answer is 25 grams.
5 0
3 years ago
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