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3 years ago

Math question from moby max . 8(3+a)=64 what is a

Mathematics

2 answers:

Dimas [21]3 years ago

8 0

I hate mobymax but a is 5 because 5 + 3 is 8 and 8 times 8 is 64

Alona [7]3 years ago

5 0

Hey there, first we simplify 8(3+a)=64 into 8a+24=64, subtract 24 from both sides, 8a+24-24=64-24=8a=40, divide both sides by 8, 8a/8=40/8, a=5.

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Can anyone tell me what x equals in this scenario. 3/4x=2x-5

Dvinal [7]

Hey There!

The answer to your problem is $x=4$

Subtract 2x from both sides

$3/4x-2x=2x-5-2x$

$-5/4x=-5$

Multiply both sides by 4/(-5)

$(4/-5)*(-5/4)$ x $=(4/-5)*(-5)$

3 0

3 years ago

In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be s

levacccp [35]

Answer:

1877 computer users

Step-by-step explanation:

We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.

We apply the following formula:

n = [z * sd / E] ^ 2

replacing:

n = [1.96 * 221/10] ^ 2

n = 1876.27

that is, the minimum sample size is 1877

7 0

3 years ago

Find the indicated side of the triangle. Please Help!!!

Angelina_Jolie [31]

Answer:

Step-by-step explanation:

So you can use the special formula for 30-60-90 triangle or you can use the whole Soh Cah Toa thing.

I honestly prefer trig. so a is the opposite side of the 30 deg and 12 is the hyp. This should scream sine to you since sine goes with opposite/hypotenuse.

sin(30 deg)=a/12

Multiply both sides by 12

giving a=12 sin(30)

Type into calculator unless you know your unit circle well.

a=6

6 0

3 years ago

Read 2 more answers

What is the factored form of 6x^2 + 13x + 6?

LekaFEV [45]

Answer:

(3x+2)(2x+3)

Step-by-step explanation:

6x2+13x+6

=(3x+2)(2x+3)

7 0

3 years ago

Use spherical coordinates. evaluate (9 − x2 − y2) dv, where h is the solid hemisphere x2 + y2 + z2 ≤ 4, z ≥ 0.

avanturin [10]

In spherical coordinates, we have

$\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\varphi\end{cases}$

which gives volume element

$\mathrm dV=\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta$

and so the triple integral is given by

$\displaystyle\iiint_H(9-x^2-y^2)\,\mathrm dV$
$=\displaystyle\int_{\theta=0}^{\theta=2\pi}\int_{\varphi=0}^{\varphi=\pi/2}\int_{\rho=0}^{\rho=2}(9-\rho^2\sin^2\varphi)\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta$
$=\displaystyle2\pi\int_{\varphi=0}^{\varphi=\pi/2}\int_{\rho=0}^{\rho=2}(9\rho^2\sin\varphi-\rho^4\sin^3\varphi)\,\mathrm d\rho\,\mathrm d\varphi$
$=\dfrac{592\pi}{15}$

4 0

3 years ago