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2 years ago

Simplify the expression 11+3(−5+4)

Mathematics

1 answer:

Ghella [55]2 years ago

7 0

Answer:

= 11+3(-1)

= -14

The answer is -14.

Step-by-step explanation:

Please mark me brainliest

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The sum of all the digits of the integers from 18 to 21 inclusive is 24 (1+8 + 1+9 + 2+0 + 2+1 = 24). What is the sum of all the

blondinia [14]

Answer:

$R=900$

Step-by-step explanation:

You can add all the digits one by one, or count how many of each digit you have in total, for example: how many digits one are in the digits of the integers from 0 to 99:

First, the ones that are in the units: 1,11,21,31,41,51,61,72,81,91, there are 10 in total (not counting the digit one in the decimals in 11).

Then the ones that are in the decimals:

10,11,12,13,14,15,16,17,18,19 they are 10 in total (not counting the digit one in the units in 11).

This means they are 20 digit ones in total. And is the same for the twos, the threes, etc. The sum of all will be:

$R=20*1+20*2+20*3+20*4+20*5+20*6+20*7+20*8+20*9\\$

Factorizing:

$R=20(1+2+3+4+5+6+7+8+9)=20(45)=900$

6 0

4 years ago

375 of the students at Haldane Elementary School walk to school. If these

ELEN [110]

Answer:

506

Step-by-step explanation:

do the math

7 0

3 years ago

PLEASE HELP ASAP! WILL GIVE BRAINLIEST! Thank you!<br> Given: mKP=2mIP, mIVK=120°<br> Find: m∠KJL

shtirl [24]

That is 99 degrees if you have the triangle facing the other way

8 0

4 years ago

Answer Choices:<br> 1/12<br> 1/2<br> 1/6<br> 2/3

lyudmila [28]

Answer:

1/12

Step-by-step explanation:

there is 1/2 chance of flipping heads and 1/6 chance of rolling a six

1/2*1/6=1/12

7 0

3 years ago

The table shows the average number of hours of daylight per day for the last four months of the year. a 2-column table with 4 ro

mina [271]

The correlation coefficient for the data in the table is A. –0.993

<h3>Calculations and Parameters:</h3>

Using this formula: $r = \frac{n(\sum xy)-(\sum x\sum y)}{\sqrt{n\sum x^2-(\sum x)^2}\sqrt{n\sum y^2-(\sum y)^2}}$

We would use x and y to represent the unknowns.

n = 4

We have,

∑x = 42,
∑y = 44.37 ,
∑xy = 461.3
∑x^2 = 446,
∑y^2 = 494

Putting these values in the formula $r = \frac{n(\sum xy)-(\sum x\sum y)}{\sqrt{n\sum x^2-(\sum x)^2}\sqrt{n\sum y^2-(\sum y)^2}}$ would bring the answer as. A. –0.993

Read more about correlation coefficient here:

brainly.com/question/4160489

#SPJ4

5 0

3 years ago