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3 years ago

EXTRA POINTS :)) find the volume - multiple choice

Mathematics

2 answers:

julia-pushkina [17]3 years ago

8 0

Answer:

the third one

Step-by-step explanation:

mote1985 [20]3 years ago

6 0

Answer:

The last one

Step-by-step explanation:

kk so the formula for this is

V=πr2h=π·42·3≈150.79645

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Account A and Account B both have a principal of $1,000 and an annual interest rate of 4%. No additional deposits or withdrawals

postnew [5]

Account A
Total-$1800
Interest-$800

Account B-
Total-$2191.12
Interest-$1191.12

Account B by $391.12

4 0

3 years ago

In two or more complete sentences describe the process in writing the equation of a line given two points?

Alona [7]

Answer:

First, we have to find slope. We do that by using slope formula. Once we have found slope, we have start to write our equation in slope-intercept form. To get the complete equation, we need to find the y-intercept. To do so, we simply plug in one of the coordinates given to us into our half-formed equation. We should be able to find the y-intercept and then have our complete linear equation once we write it all out.

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope Formula: $m = \frac{y_2-y_1}{x_2-x_1}$

4 0

3 years ago

Solve this system of equations algebraically:<br><br> y – 10 = 11x + x2<br><br> y – 12x = 30

boyakko [2]

(5, 90)

You can solve both equations for y and then set equal to each other. Then use the quadratic equation to solve for x

6 0

3 years ago

A detective finds a victim of murder at 9 am. At that time, the temperature of the body is 90.3 degrees F. One hour later, the b

LekaFEV [45]

Answer:

Step-by-step explanation:

Given

at 9 am temperature of the body is $90.3^{\circ}F$

1 hr later temperature $89^{\circ}F$

Temperature of room $T=68^{\circ}F$

According to newtons law

$\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-T_{room}\right )$

$\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-68\right )$

$\frac{dT}{T-68}=-kdt$

Integrating

$=\int \frac{dT}{T-68}=-kdt$

$\ln |T-68|=-kt+c$

$T-68=Ae^{-kt}$

Now at 9 am i.e. t=0,

$90.3=A+68$

$A=22.3$

At 10 am i.e. t=1 hr T=89

$89-68=22.3e^{-k}$

$e^{-k}=21$

$k=0.06006$

Temperature of Normal human body is $T=98.6 ^{\circ}F$

$98.6-68=e^{-0.06006t}$

$30.6=e^{-0.06006t}$

Taking log both sides

$t=-5.27$

i.e. 5 hr and 16.2 min

i.e. victim murdered at 3 am and 43.8 min

7 0

3 years ago

What is the value of c so that -12 and 12 are both solutions of x^2-c=108?

murzikaleks [220]

Answer:

c=36

Step-by-step explanation:

Because $x^2-c=108$ can be rewritten as $x^2-c-108=0$ , finding the value of c so that x=(+-)12 solves this equation it means to find the value of c so that $(+-)12^2-c-108=0$ .
Because $12^2=(-12)^2=144$ , we must find c so that $144-c-108=0$ .
Because $144-108=36$ , c=36.
To check, replace c=36 in the initial equation, and check it is a solution for x=(+-)12.

8 0

3 years ago

EXTRA POINTS :)) find the volume - *multiple choice*

EXTRA POINTS :)) find the volume - multiple choice