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Lady bird [3.3K]
4 years ago
7

Please help! I don’t understand

Mathematics
2 answers:
lora16 [44]4 years ago
5 0

The answer is definitely B

klasskru [66]4 years ago
3 0

the correct answer is B

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13 + -13 =0 exemplifies which property
stira [4]
Zero property is going to be your answer
3 0
4 years ago
Read 2 more answers
Last year, Goran opened an investment account with 5600. At the end of the year, the amount in the account had increased by 23.5
Keith_Richards [23]

Answer:

a) 1316 dollars

b) 6916 dollars

Step-by-step explanation:

Last year, Goran opened an investment account with 5600. At the end of the year, the amount in the account had increased by 23.5% .

a) How much is this increase in dollars?

The increase on dollars is calculated as:

5600 × 23.5%

= 1316 dollars

b) How much money was in his account at the end of last year ?

The amount of money in his account at the end of last year is calculated as:

Increase + Initial amount invested

=( 1316 + 5600) dollars

= 6916 dollars

8 0
3 years ago
Suppose a family has a gross annual income of ​$36,000, What is the maximum amount the family should spend each month on a mortg
Talja [164]

Answer:

Step-by-step explanation:

Ok, if they make $36,000 every year, that means the maximum they can spend is $36,000.

If the mortgage is a monthly payment, and there are 12 months in a year, that means we will split the $36,000 over 12 different payments. To do that we will divide the 36,000 by 12

36,000 / 12 = $3,000

That means the most they can spend on mortgage is $3,000 per month.

6 0
3 years ago
Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC.
faust18 [17]

Answer:

P(-2.06

And we can find this probability with this difference:

P(-2.06

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the temperatures of a population, and for this case we know the distribution for X is given by:

X \sim N(0,1)  

Where \mu=0 and \sigma=1

We are interested on this probability

P(-2.06

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(-2.06

And we can find this probability with this difference:

P(-2.06

8 0
4 years ago
Tammy said the product of 5/7 and 1 1/4 is 1 3/4.
Anna11 [10]

Answer:

Tammy is incorrect

Step-by-step explanation:

The product of 5/7 and 1 1/4 is,

(5/7) x (1 1/4)

turn the mixed number to a whole number.

1 1/4= 4/4 + 1/4 = 5/4

(5/7) x (5/4) = 25/28 which is approximately 0.8929

Tammy believes it equals 1 3/4

1 3/4 = 4/4 + 3/4 = 7/4 which is 1.75

0.8929 does not equal 1.75

5 0
2 years ago
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