Pls help with the question

Rani had Rs800 left after spending 75% of her money.How much money did she have in the beginning?

hram777 [196]

Answer:

Rs. 3200

Step-by-step explanation:

Money left Rs. 800

Money spent = 75%

Rs 800 = 25%
800 = 0.25x
x = 800/0.25
x = 3200

Initial amount was Rs. 3200

6 0

3 years ago

The radius of a circle is 7 centimeters. What is the area?

krek1111 [17]

Answer:

49开

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Given the functionſ defined by the formula f(x) = 2x +1 find the following:

Lerok [7]

Answer:

f(4) is 9

f(-5) is -9

f(0) is 1

f(1/2) is 2

4 0

3 years ago

State whether the sentence is true or false. If false, replace the underlined term to make a true sentence.

lara [203]

False , Combining a coin toss and a roll of a die makes a simple event.

In statistics, what does a probability mean?

The probability serves as a gauge for how likely an event is to occur. It gauges how likely an event is.
P(E) = Number of Favorable Outcomes/Number of Total Outcomes is the formula for probability.
Mathematics' study of random events is known as probability, and there are four primary types of probability: axiomatic, classical, empirical, and subjective.
Since probability is the same as possibility, you could say that it is the likelihood that a specific event will occur.

False , Combining a coin toss and a roll of a die makes a simple event.

A true statement is "For data at the interval level, you CAN calculate meaningful differences between data entries."

Learn more about probability

brainly.com/question/11234923

#SPJ4

3 0

1 year ago

Suppose it takes 45 hours for robot A to construct a new robot. Working together with robot B, it takes 25 hours for both robots

Len [333]

Answer:

56 hours 25 minutes

Step-by-step explanation:

Given:

Suppose it takes 45 hours for robot A to construct a new robot

It takes 25 hours for both robots to construct a new robot.

Question asked:

How long would it take robot B to construct a new robot, working alone ?

Solution:

Let the time taken by robot B to construct new robot = $x$

By robot A

It takes 45 hours to construct = 1 new robot

It takes 1 hour to construct = $\frac{1}{45} \ new\ robot$

By robot B

It takes $x$ hours to construct = 1 new robot

It takes 1 hour to construct = $\frac{1}{x}$ new robot

By working together

It takes 25 hours to construct = 1 new robot

It takes 1 hour to construct = $\frac{1}{25} \ new\ robot$

$\frac{1}{25}$ new robot is constructed in = 1 hour

New robot is constructed by both working together in 1 hour = New robot is constructed by robot A in 1 hour + New robot is constructed by robot B in 1 hour

$\frac{1}{25} =\frac{1}{45} +\frac{1}{x} \\$

Subtracting both sides by $\frac{1}{45}$

$\frac{1}{25}-\frac{1}{45} =\frac{1}{45} -\frac{1}{45}+\frac{1}{x} \\\\\frac{1}{25}-\frac{1}{45} =\frac{1}{x}\\\\ Taking\ LCM \ of \ 25\ and\ 45,\ we\ got\ 225$

$\frac{9-5}{225} =\frac{1}{x} \\ \\ \frac{4}{225} =\frac{1}{x}\\\\ By\ cross \ multiplication\\4\times x=225\\Dividing\ both\ sides\ by\ 4\\x=56.25\ hours$

Thus, robot B would take 56 hours 25 minutes to construct a new robot, working alone.

4 0

3 years ago

Read 2 more answers

Pls help with the question​

Pls help with the question