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2 years ago

Do you have good methods to calculate percentage mentally? Plz give me some good tips. I will also be giving BRAINLIEST!!!!

Mathematics

2 answers:

user100 [1]2 years ago

4 0

Answer:

If trying to find precentages Like 75% first try to find 50% and 25% and add them together.

Step-by-step explanation:

for example:

75%=50%+25%

to find 50% well just divide the number by half and to find 25% divided the number by 4. Then add these number to get 75%!

kati45 [8]2 years ago

3 0

Answer: well me if I want to find a percentage of a number I turn the percent into a decimal.

Step-by-step explanation:

Example- 15% of 60

0.15*60= 9

15% of 60 is 9

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Help me on this math question please

Sunny_sXe [5.5K]

Answer:

its simplest form is 4/5

3 0

2 years ago

Slope intercepts <br> No links, Will mark BRAINLIEST

Sergeeva-Olga [200]

Answer:

<em><u>Lines are perpendicular to each other .</u></em>

Step-by-step explanation:

Standard equation of line is : y = mx + c, Where m represents the slope

Given Equations :

$y = -5x + 1\\\\Slope , m_1 = -5$

$y = \frac{1}{5}x +1\\\\Slope, m_2 = \frac{1}{5}$

Two lines are parallel if the slope of the lines are same.

Two line are perpendicular if the product of the slope = - 1

Clearly slopes are not equal , therefore the lines are not parallel.

product of the slope is - 1, therefore the lines are perpendicular.

$m_1 \times m_2 = -5 \times \frac{1}{5} = - 1$

8 0

2 years ago

On a lunch counter, there are 3 oranges, 5 apples, and 2 bananas. If 3 pieces of fruit are selected, find the probability that 1

muminat

Answer:

$Probability = \frac{1}{24}$

Step-by-step explanation:

Given

$Oranges = 3$

$Apples = 5$

$Banana = 2$

$Total = 10$

Required

Determine the probability of 1 orange, 1 apple and 1 banana

Since, order is not important:

$Probability = P(Orange) * P(Apple) * P(Banana)$

$Probability = \frac{3}{10} * \frac{5}{9} * \frac{2}{8}$

<em>The difference in the numerator is as a result of picking the fruit without replacement</em>

$Probability = \frac{30}{720}$

$Probability = \frac{1}{24}$

6 0

3 years ago

Laura has 3.85 pounds of bananas. She goes to the store to buy 2.75 more pounds of bananas to make banana bread. Each loaf requi

Inessa [10]

Answer:

Step-by-step explanation:

3.85+2.75= 6.6

6.6÷0.30= 22

6 0

2 years ago

Read 2 more answers

5b 2 −6b−2 is prime TURE OR FALSE!! 100 POINTS PLEASE HELP!!!!

Ivan

The given quadratic expression; 5b² -6b -2 is prime because the discriminant is not a perfect square.

<h3>What is the discriminant of the expression?</h3>

According to the task content; it is required to identify if the expression is prime.

On this note, it follows that the discriminant of the expression can be evaluated as follows;

= 36 -(4× 5 × -2)

= 76.

Hence, the expression is prime since 76 is not a perfect square.