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2 years ago

Please Help me in math!

Mathematics

2 answers:

alexandr1967 [171]2 years ago

7 0

The estimated total amount of the bill is $22. The total on the register is reasonable.

Ronch [10]2 years ago

6 0

The total estimate should be 22$ considering the 77¢is rounded up from 21.77

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A circle has a radius of 5/6 units and is centered at (3.6,7.8)

romanna [79]

Answer:

(x-3.6)^2 + (y-7.8)^2 = (5/6)^2

Step-by-step explanation:

8 0

2 years ago

It cost $5 to enter an amusement park and $3 per ride you take.

svlad2 [7]

Answer:

y here's how you count by 5 10 15 20 25 30 35

3 0

1 year ago

An observer 2.5 miles from the launch pad of a space shuttle measures the angle of elevation to the base of the shuttle to be 25

kotegsom [21]

Answer:

Height of shuttle at that instant = 1.17 miles

Step-by-step explanation:

Refer the given figure.

C is the position of rocket and B is the position of observer.

Here we need to find AC, that is the height of shuttle at that instant.

Using trigonometric rules on ΔABC, we have

$tan25=\frac{AC}{AB} \\\\tan25=\frac{AC}{2.5}\\\\AC=2.5\times tan25\\\\AC=1.17miles$

Height of shuttle at that instant = AC = 1.17 miles

5 0

2 years ago

Which of these is closest to the time in years that it will take an investment to triple when it is invested in an account that

kkurt [141]

Answer:

20.4 years

Step-by-step explanation:

The nper formula in excel comes handy in this scenario:

=nper(rate,pmt,-pv,fv)

Rate is the monthly rate of 5.4%/12

Assuming actual investment is $5,000 which is pv

The triple amount would be $5,000*3=$15,000 which is future value fv.

pmt is the regular cash flow the investment which is zero

=nper(5.4%/12,0,-5000,15000)= 244.68 months

Yearly it can be expressed as = 244.68/12 =20.39 years

When rounded to one decimal place it becomes 20.4 years

5 0

2 years ago

Find the absolute maximum and minimum values of the following function on the given interval. If there are multiple points in a

Bond [772]

$f(x)=3\sin x+3\cos x\implies f'(x)=3\cos x-3\sin x$

$f$ has critical points where $f'=0$ :

$3\cos x-3\sin x=0\implies\cos x=\sin x\implies\tan x=1\implies x=\pm\dfrac\pi4+2n\pi$

where $n$ is any integer. We get solutions in the interval $\left[0,\frac\pi3\right]$ for $n=0$ , for which $x=\frac\pi4$ .

At this critical point, we have $f\left(\frac\pi4\right)=3\sqrt2\approx4.243$ .

At the endpoints of the given interval, we have $f(0)=3$ and $f\left(\frac\pi3\right)=\frac{3+3\sqrt3}2\approx4.098$ .

So we have the extreme values

$\max\limits_{x\in\left[0,\frac\pi3\right]}f=3\sqrt2$

$\min\limits_{x\in\left[0,\frac\pi3\right]}f=3$

8 0

3 years ago