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3 years ago

What is the sum? 8+(-12) -20 4 ОО 20

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

4 0

The answer is 4 but I don’t see that in the answer choices you have provided. Is there anything more to the question?

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3. Terry wants to buy 3 toys.

Vikentia [17]

Answer:

Robot truck robot

truck robot truck

robot robot robot

truck truck truck

Step-by-step explanation:

3 0

3 years ago

Two computers just scanned for viruses at the same time. Computer A runs a virus scan every 2.75 days. Computer B runs a virus s

Elis [28]

Let the time taken by computer for virus scan be, 'x' days

We are given that Computer A runs a virus scan in every 2.75 days and Computer B runs a virus scan in every 3.5 days.

<h3>Amount of work done by computer A⤵️</h3>

Amount of work done in one day = $\tt\frac{1}{2.75}$

Amount of work done in x days = $\tt\frac{x}{2.75}$

<h3>Amount of work done by Computer B⤵️</h3>

Amount of work done in one day = $\tt\frac{1}{3.5}$

Amount of work done in x days = $\tt\frac{x}{3.5}$

Since, They are doing the same work the amount of work done is 1.

$\sf \: \frac{x}{2.75} + \frac{x}{3.5} = 1$

Solve for x ~

$\sf \frac{x}{ \frac{11}{4} } + \frac{x}{ \frac{7}{2} } = 1$

$\sf \frac{4x}{11} + \frac{2x}{7} = 1$

$\sf \: 28x + 22x = 77$

$\sf \: 50x = 77$

$\sf \: x = \frac{77}{50}$

$\boxed{ \bf \: x = 1.54}$

➪ <em>Thus, the time taken when both computers run a virus scan at the same time again is, 1.54 days</em>

8 0

2 years ago

PLEASE HELP ME please!

Delicious77 [7]

Answer:

x < -1

so its C

Step-by-step explanation:

3 0

3 years ago

Donna is taller than David but shorter than bill. dan is shorter than Bob. wha is the first letter in the name of the tallest pe

natka813 [3]

It would be B.
David Donna bill
Dan bob

6 0

3 years ago

you decided to keep flipping a coin until tails came up. what is the probability of tails coming up on the 5th flip of the coin?

zzz [600]

1 in 2. Each flip is independent of each other, so whether it is the 1st flip or 5th or 100th, the probability of getting tails on any one flip is 50%

6 0

4 years ago