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3 years ago

Solve the equation using the distributive property and properties of equity 1/2(x + 6) = 18

Mathematics

1 answer:

shepuryov [24]3 years ago

6 0

Answer:

x=30

Step-by-step explanation:

1/2(x + 6) = 18

Distribute

1/2 x + 1/2 *6 = 18

1/2 x +3 = 18

Subtract 3 from each side

1/2 x +3-3 = 18-3

1/2 x = 15

Multiply each side by 2

2*1/2x = 15*2

x = 30

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Anyone............I will give BRAINLIEST

posledela

Answer:

100 cm²

Step-by-step explanation:

Area of the larger circle:

A = π(2r)² = 4πr²

The shaded area:

π(2r)² - πr² = 75
3πr² = 75
πr² = 25

Area of the larger circle:

A = 4(25) = 100 cm²

6 0

3 years ago

If the sin 60 agrees equals the square root of three over two which statement is true

torisob [31]

Given that
$\sin60^o= \frac{ \sqrt{3} }{2}$

$\cos 30^o =\sin(90-30)^o=\sin60^o=\frac{ \sqrt{3} }{2}$ ,

$\cos 120^o =-\sin(180-120)^o=-\sin60^o=-\frac{ \sqrt{3} }{2}$ ,

$\cos30^o\neq0$ ,

$\cos120^o\neq0$

Therefore, the true statement is
$\cos 30^o =\sin(90-30)^o=\sin60^o=\frac{ \sqrt{3} }{2}$ ,
because the cosine and sine are complements.

3 0

3 years ago

Can someone please help for brainliest

Ksivusya [100]

Answer:

x = 10

Step-by-step explanation:

$4 (\frac{1}{2}x - 3 ) = 8$

4 came from the number of people, Donavon, and 3 friends; 1 + 3 = 4

$\frac{1}{2}$ came from the amount they spent on rides; They each spent $\frac{1}{2}$ their money on rides

(-3) came from the amount they spent on food, Then they each spend $3 on food.

8 came from the total amount they had left; Donavon and his three friends have a total of $8 remaining.

4 ( $\frac{1}{2}$ x - 3 ) = 8

Distribute;

4 ( $\frac{1}{2}$ x - 3 ) = 8

2x - 12 = 8

Inverse operations;

2x - 12= 8

+12 +12

2x = 20

/2 /2

x = 10

3 0

3 years ago

Find the Slope and Y-intercept of the line

geniusboy [140]

It's B. Because of the line is not going up or down, so the slope should be 0. And the line is 3 block above the 0 point, so y-inter is 3.

3 0

3 years ago

Read 2 more answers

Please help!

quester [9]

Answer:

The third one

Step-by-step explanation:

Median - Middle number in terms of value

Mode - outcome that appears the most

Mean - average ( add the numbers together and divide that by the amount of numbers )

Data without Kevins score

13, 21, 28, 9, 31

First let's find the mean

To find the mean we simply add the numbers up and divide that by the total amount of numbers ( there are 5 numbers )

13 + 21 + 28 + 9 + 31 = 102

102/5=20.4

So the mean without Kevins score is 20.4

Next let's find the mode

The mode is the number that appears the most

Looking at the data no number appears more than once so there is no mode

Finally let's find the median.

To make it easier to find let's list the numbers in order from least to greatest

9, 13 , 21 , 28, 31

We then go to the middle number ( which would be 21 )

The mode is 21

So for data without Kevins score the mean would be 20.4, the median would be 21 and the mode would be none

Now let's add in Kevin's score and repeat this process

Data with Kevin's score

13, 21, 28, 9, 31, 9

First let's find the mean

( Note that there is 6 numbers this time )

13 + 21 + 28 + 9 + 31 + 9 = 111

111/6 = 18.5

So mean with Kevin's score = 18.5

Next let's find the mode

The number 9 appears the most so the mode is 9

Finally let's find the mean

Once again let's list the numbers from least to greatest

9, 9, 13 , 21 , 28, 31

Because there is an even amount of numbers we will take the sum of the two middle numbers and divide that by 2

The two middle numbers would be 21 and 13

21 + 13 = 34

34/2=17

So median = 17

In the end we get the following

Without Kevins score

Mean = 20.4

Median = 21

Mode = none

With Kevin's score

Mean = 18.5

Median = 17

Mode = 9

This information corresponds with the third table

5 0

3 years ago