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3 years ago

Is this the right answer?

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

Hello from MrBillDoesMath!

Answer:

Yes!

Discussion:

a + b= 2a => subtract "a" from both sides

a - a + b = 2a - a => as (a-a) = 0 and (2a-a) = a

b = a (*)

Then from (*) above

b-a = b - b => b-b = 0

b -a = 0

Thank you,

MrB

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Un triángulo isósceles ,la altura al lado desigual mide 1 cm mas que longitud de ese lado . Calcula el valor de dicha altura sab

sertanlavr [38]

Answer:

Hence the required dimension is 4cm.

Step-by-step explanation:

Given:

An Isosceles triangle with uneven side=l+1 cm

Area= 6 sq cm

To Find:

Height of Triangle.

Solution:

We know that area of triangle given by,

Area=1/2*base*height.

Here height =1+base

6=1/2((b+1)*b

12=(b+1)*b.

b^2+b-12=0

(b-3)(b+4)=0

b=3 or b=-4

So length never be negative

so b=3 cm

And height=b+1=3+1=4 cm.

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3 years ago

You drive from your home to a vacation resort 420 miles away. You return on the same highway. The average velocity on the return

attashe74 [19]

<h2>Time required to complete the round trip $T=\frac{420}{x}+\frac{420}{(x-15)}$ where x is average velocity on the outgoing trip.</h2>

Step-by-step explanation:

Let average velocity of outgoing trip = x mph

The average velocity on the return trip is 15 miles per hour slower than the average velocity on the outgoing trip.

Average velocity of return trip = (x-15) mph

Distance to vacation place = 420 miles

Distance to vacation place = Time for outgoing trip x average velocity of outgoing trip

$420=t_1\times x\\\\t_1=\frac{420}{x}$

Distance to vacation place = Time for return trip x average velocity of return trip

$420=t_2\times (x-15)\\\\t_2=\frac{420}{(x-15)}$

We have total time T = t₁ + t₂

That is

$T=\frac{420}{x}+\frac{420}{(x-15)}$

Time required to complete the round trip $T=\frac{420}{x}+\frac{420}{(x-15)}$ where x is average velocity on the outgoing trip.

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2 years ago

What is the derivative of e^x/3

Ad libitum [116K]

Answer:

$\frac{1}{3}e^{x/3}$

Step-by-step explanation:

<h3>Derivative </h3>

$\frac{1}{3}e^{x/3}$

Since, the derivative of e^x is e^x and e^(yx) is ye^(yx)

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3 years ago

Read 2 more answers

A boat is heading towards a lighthouse, whose beacon-light is 126 feet above the water. From point AA, the boat’s crew measures

vredina [299]

Using the slope concept, it is found that the distance from point A to point B is of 887 feet.

<h3>What is a slope?</h3>

The slope is given by the <u>vertical change divided by the horizontal change</u>.

It's also the tangent of the angle of depression.

In this problem, the vertical change is of 126 feet.

At point A, the angle is of 6º, while the horizontal position is of $x_A$ , hence:

$\tan{6^\circ} = \frac{126}{x_A}$

$x_A = \frac{126}{\tan{6^\circ}}$

$x_A = 1198.8$

At point B, the angle is of 22º, while the horizontal position is of $x_B$ , hence:

$\tan{22^\circ} = \frac{126}{x_B}$

$x_B = \frac{126}{\tan{22^\circ}}$

$x_B = 311.9$

Hence, the distance in feet is of:

$d = x_A - x_B = 1198.8 - 311.9 \approx 887$

More can be learned about the slope concept at brainly.com/question/18090623

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2 years ago

Please Help Me! I will give brainly!!

DerKrebs [107]

Answer:

5 1/10 meters

Step-by-step explanation:

18 4/5 can be changed to 18 8/10 so

18 8/10 - 13 7/10 = 5 1/10 meters

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2 years ago

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