All categories

3 years ago

TEST PLZ HELP FOR POINTS

Mathematics

2 answers:

77julia77 [94]3 years ago

7 0

My best answer will be 12

dmitriy555 [2]3 years ago

5 0

Answer:

the answer is 32 for sure

Step-by-step explanation:

pretend that they are two triangles opposite to each other and the use the Pythagoras Theorem

You might be interested in

Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya had bought 2 burgers

Maru [420]

<span>3x + 2 y = 27
2 x + y = 27-11 = 16
=================

The student's conclusion is correct because the solution to the system of equations 3x + 2y = 27 and 2x + y = 16 is (5, 6). C
</span>

8 0

4 years ago

Read 2 more answers

Integrate dx/3sinx+4cosx

german

$\displaystyle\int\frac{\mathrm dx}{3\sin x+4\cos x}$

A standard approach would be the tangent half-angle substitution:

$t=\tan\dfrac x2\implies\mathrm dt=\dfrac12\sec^2\dfrac x2\,\mathrm dx$

Then

$\sin x=2\sin\dfrac x2\cos\dfrac x2\implies\sin x=\dfrac{2t}{1+t^2}$

$\cos x=\cos^2\dfrac x2-\sin^2\dfrac x2\implies\cos x=\dfrac{1-t^2}{1+t^2}$

from which we get

$\mathrm dx=\dfrac2{1+t^2}\,\mathrm dt$

So the integral becomes

$\displaystyle\int\frac{\frac2{1+t^2}}{\frac{6t}{1+t^2}+\frac{4(1-t^2)}{1+t^2}}\,\mathrm dt=\int\frac{\mathrm dt}{3t+2(1-t^2)}=-\int\frac{\mathrm dt}{2t^2-3t-2}$

Rewrite the denominator as

$2t^2-3t-2=(2t+1)(t-2)$

and expand the integrand into its partial fractions:

$\dfrac1{2t^2-3t-2}=\dfrac15\left(\dfrac1{t-2}-\dfrac2{2t+1}\right)$

We have

$\displaystyle-\frac15\int\frac1{t-2}-\frac2{2t+1}\,\mathrm dt=-\frac15(\ln|t-2|-\ln|2t+1|)+C$

$=\dfrac15\ln\left|\dfrac{2t+1}{t-2}\right|+C$

$=\dfrac15\ln\left|\dfrac{2\tan\frac x2+1}{\tan\frac x2-2}\right|+C$

6 0

3 years ago

La maestra del quinto grado, que tiene 27 estudiantes, desea hacerles un regalo por el "Día del niño". Si adquirió una caja de b

Mekhanik [1.2K]

Answer: Yes, it will be enough.

Step-by-step explanation:

I will answer this in English:

We have 27 students and 81 units, we want to give 3 units to each student.

This is only possible if the quotient betwen 81 and 3 must be bigger than 27.

Lets do it:

81/3 = 27

So we have exactly enough for the 27 students.

8 0

3 years ago

From 90 apples to 75 apples Round to nearest percent

Elanso [62]

Answer:

we can play the game 3 in a car but it is a 3rd year of my life as a child in the same age group and we all night out the day we can see that we are in my best in the morning and I have a good feeling of the great depression I can get in a while but you are going to be pregnant and have no 6clue or anything to eat but don't have a problem in my area and the symptoms of my diet have to go down and the symptoms of a flu are not severe and the pain will inv and

Step-by-step explanation:

he is a great example and I think the most interesting part is the time when the same people are going through the process that they have in the future for 3rd century and then the next one will inv to the store in the next few years to t or no one else in the day and the rest is not going on the phone and the phone will not have a problem or a problem that they are trying not a snitch or no

3 0

3 years ago

Help i'm doing math i have 10 minutes! :/

vova2212 [387]

Answer: x=7
(Trust me)

8 0

3 years ago

Read 2 more answers