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3 years ago

NEEDs HELP AB ⊥ AC true or false idk i think it's false

Mathematics

1 answer:

jonny [76]3 years ago

4 0

Perpendicular means the slopes are opposite inverse of each other
If line a is slope 2, the perpendicular line to Line a would have a slope - 1/2
Difference in y over difference in x gives slope. If they are opposite inverse values the lines are perpendicular. ( in this case the answer is true.)

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An animal pen is in the shape of a triangle. One of the interior angles of the triangle is 40°. The measures of the other interi

Alexus [3.1K]

Answer:

The measure of the largest interior angle is $87.5^{o}$ .

Step-by-step explanation:

Given one of the interior angles of the triangle = 40°. Let the other interior angles be represented by b and c.

Sum of angles in a triangle is $180^{o}$ .

So that;

b + c + 40° = $180^{o}$

b + c = $180^{o}$ - 40°

b + c = $140^{o}$

But, b and c are in the ratio 3:5

Thus,

b = $\frac{3}{8}$ x $140^{o}$

= $52.5^{o}$

b = $52.5^{o}$

c = $\frac{5}{8}$ x $140^{o}$

= $87.5^{o}$

c = $87.5^{o}$

Check:

$52.5^{o}$ + $87.5^{o}$ = $140^{o}$

The measure of the largest interior angle is $87.5^{o}$ .

6 0

3 years ago

Use the grid to create a model to solve the percent problem.

Delicious77 [7]

For this case we can make the following rule of three:
21 ------> 70%
x --------> 100%
Clearing x we have:
x = (100/70) * (21)
Rewriting we have:
x = (10/7) * (21)
x = 30
Thus,
21 is 70% of 30
Answer:
21 is 70% of 30

6 0

4 years ago

There are 365 days in a year. There are four seasons in a year (winter, spring, summer, fall). Each season has the same number o

Vinvika [58]

Answer:

I think it is 272

Step-by-step explanation:

Not every month has the same amount Winter is about 89 days long. -- Autumn is 90 days. -- Spring is 93 days

8 0

3 years ago

Read 2 more answers

Solve (x-3)^2 = 5 HELP ASAP!!! Please!! :(

Bas_tet [7]

Answer:

Answer is option d 

Step-by-step explanation:

$given \: expression \: is \: {(x - 3)}^{2} = 5 \\ {x}^{2} - 6x + 9 = 5 \\ subtracting \: 5 \: on \: both \: sides \: we \: get \\ {x}^{2} - 6x + 4 = 0 \\ on \: solving \: the \: quadratic \: equation \: by \\ \: completing \: square \: method \\ {x}^{2} - 6x = - 4 \\ adding \: {3}^{2} on \: both \: sides \: w e\: get \\ {x}^{2} - 6x + {3}^{2} = {3}^{2} - 4 \\ {(x - 3)}^{2} = 5 \\ x - 3 + = \sqrt{5} \\ x = \sqrt{5 } + 3$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 

5 0

3 years ago

What does it mean to be a standard deviation away from the mean?

Helga [31]

Mean can also be thought of as average.

Standard deviation is a bit more difficult to describe. It is a statistic that can help measure how spread out the data gets.

Depending on the distribution, data within 1 standard deviation of the mean can be considered fairly common and expected. Essentially it tells you that data is not exceptionally high or exceptionally low.

8 0

3 years ago