All categories

3 years ago

How do you solve 2x+13=27

Mathematics

2 answers:

butalik [34]3 years ago

7 0

Answer:

x=7

Step-by-step explanation:

Simplify the equation into

2x=14

Therefore x=7

dsp733 years ago

6 0

Answer:

x=7

Step-by-step explanation:

2x+13=27

First, subtract 13 from both sides

27-13=14

2x= 14

Divide 14 by 2

14/2=7

x=7

You might be interested in

$10,000+8.55 sales tax

Pavlova-9 [17]

Answer:

$10,008.55

Add 10000, and 8.55 to give the total.

10,000.00

The cents will be .55 since the $10,000 does not have any cents included.

The $8 will stay since the $10,000 does not have any dollars below 10 dollars.

So, the answer will be $10,008.55

4 0

3 years ago

A survey about phone service has a margin of error of 5%. Out of 150 people surveyed, 103 said that they were pleased with their

lapo4ka [179]

Answer:

The range of the number of people that are satisfied is option A. 46,968 to 51,912 customers.

Step-by-step explanation:

Hi, to solve this problem you need to calculate the total number of customers that are pleased with the service, based on the 150 people sample.

so:

(72,000 x 103 )÷150 = 49,440

The next step is to calculate the 5% margin of error of that result.

49,440 x 0.05= 2,472

Finally, to obtain the range you need to add and subtract the margin to the total number of customers that are pleased with the service.

49,440-2,472= 46,968

49,440 + 2,472=51,912

So, the range of the number of people that are satisfied is option A. 46,968 to 51,912 customers.

8 0

3 years ago

A new test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A med

Troyanec [42]

The tree diagram of the problem above is attached
There are four outcomes of the two events,

First test - Cancer, Second Test - Cancer, the probability is 0.0396
First test - Cancer, Second Test - No Cancer, the probability is 0.0004
First test - No Cancer, Second Test - There is cancer, the probability is 0.0096
First test - No cancer, Second Test - No cancer, the probability is 0.9054

The probability of someone picked at random has cancer given that test result indicates cancer is $\frac{0.0396}{0.0396+0.0096}= \frac{33}{41}$

The probability of someone picked at random has cancer given that test result indicates no cancer is $\frac{0.0396}{0.0004+0.9504} = \frac{99}{2377}$