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3 years ago

Can someone PLZ help me! This is a music question, and WILL AWARD BRAINLIEST

Mathematics

1 answer:

LekaFEV [45]3 years ago

5 0

That’s a quarter rest &&

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Using polynomial identities, multiply the expression (2x+8y)(2x-8y)

igomit [66]

(2x)sqrt 2- 64y2 is the answer

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3 years ago

What is 27 divided by 1,581

quester [9]

Answer:

0.01707779886

Step-by-step explanation:

Just do 27/1581

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3 years ago

if a triangle is an equilateral triangle then the triangle has exactly three 60 angles abc is an equilateral triangle

Artist 52 [7]

Answer:

The statement is always TRUE

Step-by-step explanation:

An equilateral triangle has all angles and all sides equal

The sum of angles in a triangle is 180 degrees.

Let each of the angles be x degrees.

Then we solve the following equation for x.

$x+x+x=180\degree$

$\implies 3x=180$

$\implies x=\frac{180}{3}=60\degree$

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3 years ago

two cars travel at same speed to different destinations. car A reaches its destination in 24 minutes. car B reaches its destinat

Harlamova29_29 [7]

Answer:

The speeds of the cars is: 0.625 miles/minute

Step-by-step explanation:

We use systems of equations in two variables to solve this problem.

Recall that the definition of speed (v) is the quotient of the distance traveled divided the time it took : $v=\frac{distance}{time}$ . Notice as well that the speed of both cars is the same, but their times are different because they covered different distances. So if we find the distances they covered, we can easily find what their speed was.

Writing the velocity equation for car A (which reached its destination in 24 minutes) is:

$v\,*\,24\,min=d_A$

Now we write a similar equation for car B which travels 5 miles further than car A and does it in 32 minutes:

$v\,*\,32\,min=d_A+5\,miles$

Now we solve for $d_A$ in this last equation and make the substitution in the equation for car A:

$v\,*\,32\,min=d_A+5\,miles\\d_A=v\,*\,32\,min-5\,miles\\\\v\,*\,24\,min=v\,*\,32\,min-5\,miles\\v\,(24\,min-32\,min)=-5\,miles\\v\,(-8\,min)=-5\, miles\\v=\frac{-5}{-8} \frac{miles}{min} \\v=0.625\,\frac{miles}{min}$

So this is the speed of both cars: 0.625 miles/minute

3 0

3 years ago

Select two fractions equivalent to<br> 21/28.<br> A)42/56 B)3/4 C)3/9 D)3/7

Natali [406]

Answer: B.) 3/4

Step-by-step explanation:

I Got B by dividing 7 by 21 and 28 which is 3 and 4 so B is the correct answer.

5 0

3 years ago

Read 2 more answers