All categories

3 years ago

if you know that 2 of the angles in a triangle are acute and 1 of them is obtuse, how can you tell what kind of triangle it is?

1 answer:

5 0

Determine if the following lengths make an acute, right or or obtuse triangle. Plug in each set of lengths into the Pythagorean Theorem.

You might be interested in

Does anyone know how to do thesubstitution method?

Angelina_Jolie [31]

Hi!

<h3>How do we use the substitution method?</h3>

To solve using the substitution method, we first want to isolate any of the variables from one of two equations, and then you take the value of that and plug it into the other equation.

<h3>Given:</h3><h3> $y=4x-10$ </h3>

$y=-3x+4$

Normally, our step one would be to pick a variable and isolate it, but it looks like we already have the y-value in both equations isolated! So our step one is already done!

Plug the isolated variable into the other equation.

We will use the value of y in the first one, and plug it into the second.

The value of y is "4x - 10", so we will change "y" in the second equation to "4x - 10", like so:

$4x-10=-3x+4$

<h3>Step Three:</h3>

Algebra!

You should be familiar with how to solve equations.

So:

$4x-10=-3x+4$

Add 10 to both sides:

$4x=-3x+14$

Add 3x to both sides:

$7x=14$

Divide both sides by 7:

$x=2$

Now, take the x value and plug it into one of the other equations and solve for y.

$y=4(2)-10$

$y=8-10$

$y=-2$

Therefore, our answer is (2, -2).

For a fantastic explanation of how to do the substitution method, see:

brainly.com/question/26094713

7 0

2 years ago

The mean number of students in a classroom at school a is 32.5 and there are 25 classrooms. The mean number of students at schoo

Airida [17]

We have given three school there, School A, School B and School C.

We are going to use following formula.

Total number of student in a school = Mean of number of student × Number of classrooms.

School A

Mean of students in School A = 32.5.

Number of classroom in School A = 25.

Number of students in School A = Mean × number of classrooms = 32.5×25 = 812.5

School B

Mean of students in School B = 29.6.

Number of classroom in School B = 12.

Number of students in School B = Mean × number of classrooms = 29.6×12 = 355.2

School C

Mean of students in School C = 15.3.

Number of classroom in School C = 10.

Number of students in School C = Mean × number of classrooms = 15.3×10 = 153.

Total sum of number of classes in all schools = 25+12+10 = 47.

Total sum of all students in all schools = 812.5 +355.2 +153 = 1320.7 .

The mean number of students per classroom for all the schools combined =

$\frac{Total \ sum \ of \ all \ students \ in \ all \ schools}{Total \ sum \ of \ number \ of \ classes \ in \ all \ schools}$

= $\frac{1320.7}{47}$ = 28.1

The mean number of students per classroom for all the schools combined= 28.1

4 0

3 years ago

Find the slope of the line that passes through the points (2,3) and (2, -5)

iren [92.7K]

Answer: undefined

Step-by-step explanation:

(-5-3)/(2-2) = -8/0 so the slope is undefined

3 0

3 years ago

What is the simplified form of 8b^3c^ 2a + 4b^3c^2?

stiv31 [10]

$8b^{3} c^2+4b^{3} c^2$
$= (8+4) b^{3} c^2$
$=12 b^{3} c^2$

Be carefully, normally there is no a in your expression. I think you made a mistake.

Hope this helps !

Photon

8 0

3 years ago

Kahn academy question:

Rufina [12.5K]

Answer:

2.97×10³

Step-by-step explanation:

3600 - 6.3×10² = 3600 -6.3×100 = 3600 -630 = 2970

= 2.97×1000

= 2.97×10³

_____

Your calculator can accept and display numbers in scientific notation.

8 0

3 years ago