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zubka84 [21]
2 years ago
14

I need some math help please

Mathematics
1 answer:
Yuliya22 [10]2 years ago
5 0

Answer:

A.Pi

Step-by-step explanation:

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4w+5z=30 solve for w
zepelin [54]

Answer:

w=\frac{30-5z}{4}

Step-by-step explanation:

4w+5z=30\\\\4w+5z-5z=30-5z\\\\4w=30-5z\\\\\frac{4w=30-5z}{4}\\\\\boxed{w=\frac{30-5z}{4}}

Hope this helps.

3 0
3 years ago
Work out the total surface area of this hemisphere which has a radius of 8cm.
Masja [62]

\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\ \cline{1-1} r=8 \end{cases}\implies SA=4\pi (8)^2\implies SA=256\pi \\\\\\ \stackrel{\textit{half of that for a \underline{hemi}sphere}}{\cfrac{256\pi }{2}\implies 128\pi \implies }\stackrel{\textit{rounded up}}{402.1}

4 0
3 years ago
Help please :) I'd greatly appreciate it
azamat
= 4i (2i) <span>√6
= 8i^2 </span><span>√6 but i^2 = -1
= - 8</span><span>√6</span><span>

</span>
6 0
3 years ago
If if four points are collinear, that are also coplanar: true or false??
Aliun [14]

if four points are collinear, that are also coplanar:   This is true


If points lie in the same line. they must lie in the same plane

7 0
3 years ago
Its please excuse my dear aunt sally if yall know any of that (32-4)*5*(10+22)
Marina CMI [18]
Complete the brackets first and then multiply it all.
28x5x32= 4480
5 0
3 years ago
Read 2 more answers
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