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borishaifa [10]
3 years ago
6

The table shows the participation in a school’s debate club during the last four years.

Mathematics
1 answer:
Dominik [7]3 years ago
7 0

Incomplete question, but use the following example as an illustration.

Step-by-step explanation:

Say one person had $200 in a savings account last month and now has $225. That's an increase. The problem is to find the percent of increase in money.

Read more on Brainly.com - brainly.com/question/14791979#readmore

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Use the discriminant to determine how many real number solutions exist for the quadratic equations -4j+3j-28=0
aleksandr82 [10.1K]
<span>the correct equation is
- 4j² + 3j - 28 =0

 ax² + bx + c,
 a = -4, b=3  c =- 28.
The discriminent D = b² - 4.a.cD = 3² - 4(-4)(-28)D = -439 
If D ≥ 0 there are either 2 roots or one double if = 0)if D< 0, there are no real roots (but 2 imaginary roots)Since D < 0, then there is no real roots
 The answer there is no real roots</span>
8 0
3 years ago
A bin contains 25 light bulbs, 5 of which are in good condition and will function for at least 30 days, 10 of which are partiall
Ira Lisetskai [31]

Answer:

The probability that it will still be working after one week is \frac{1}{5}

Step-by-step explanation:

Given :

Total number of bulbs = 25

Number of bulbs which are good condition and will function for at least 30 days = 5

Number of bulbs which are partially defective and will fail in their second day of use = 10

Number of bulbs which are totally defective and will not light up = 10

To find : What is the probability that it will still be working after one week?

Solution :

First condition is a randomly chosen bulb initially lights,

i.e. Either it is in good condition and partially defective.

Second condition is it will still be working after one week,

i.e. Bulbs which are good condition and will function for at least 30 days

So, favorable outcome is 5

The probability that it will still be working after one week is given by,

\text{Probability}=\frac{\text{Favorable outcome}}{\text{Total number of outcome}}

\text{Probability}=\frac{5}{25}

\text{Probability}=\frac{1}{5}

5 0
3 years ago
What is this fraction as a decimal?
expeople1 [14]
14.4
hope this helps:)
6 0
2 years ago
Question is in the picture pls help.
Usimov [2.4K]

Answer:

c. is the answer

5 0
2 years ago
Read 2 more answers
The oldest child in a family of four children is twice as old as the yougest. The two middle children are 12 and 16 years old. I
Vladimir [108]
Four children average is 15.25 so ages must add to 61
61-12-16=33
11 and 22 go into 33
Youngest is 11
6 0
2 years ago
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