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Alisiya [41]
3 years ago
5

What angle would you need on a pie graph for a section that represented 25% of the

Mathematics
1 answer:
stich3 [128]3 years ago
6 0

Answer: C

Step-by-step explanation:

Use proportion:

360:100=x=25

100x=25*360

x=360/4

x=90

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Maas has a bank account with less than $400 in it.his bank pays no interest on that account,and charges $2 per month for each mo
jasenka [17]

Answer:

400 - 2 (24 months) = $352

Step-by-step explanation:

7 0
2 years ago
5z+7=3 what solution
Maru [420]

Answer:

z = -4/5

Step-by-step explanation:

5z + 7 = 3

5z = -7 + 3

5z = -4

z = -4/5

Hope this helps :)

Let me know if there are any mistakes!!

6 0
3 years ago
Find the inverse of the function x2 + y2 = 4 and the domain of the inverse for 0 ≤ x ≤ 2.
alexandr402 [8]
To get the inverse "relation" of an expression, we first off, do a quick switcharoo of the variables, and then solve for "y", so let's proceed,

\bf x^2+y^2=4\qquad inverse\implies \boxed{y}^2+\boxed{x}^2=4
\\\\\\
y^2=4-x^2\implies y=\pm\sqrt{4-x^2}

and yes, the domain for the range 0 ⩽ x <span>⩽ 2, let's get instead the "range" of the original function,

</span>\bf x^2+y^2=4\implies 0^2+y^2=4\implies y=\pm\sqrt{4}\implies \boxed{y=\pm 2}&#10;\\\\\\&#10;x^2+y^2=4\implies 2^2+y^2=4\implies 4+y^2=4\implies \boxed{y=0}\\\\&#10;-------------------------------\\\\&#10;\stackrel{\textit{range of original}}{-2\le y \le 2}~~=~~\stackrel{\textit{domain of its inverse}}{-2\le x \le 2}<span>
</span>
8 0
3 years ago
12 spheres of the same size are made from melting a solid cylinder of 1 cm diameter and 2 cm height. Find the diameter of each s
mars1129 [50]

The answer is: The diameter is 4 centimeters.

The explanation  is shown below:

1. The volume of the cylinder is:

Vc=r^{2}h \pi

Where r is the radius (r=\frac{16cm}{2}=8cm) and h is the height (h=2cm).

Then:

Vc=(8cm)^{2}}(2cm)\pi\\Vc=128\pi

2. The total volume of the 12 spheres is:

Vs=12(\frac{4}{3}r^{3}\pi)\\Vs=16r^{3}\pi

3. The volume of the cylinder and the total volume of all the 12 spheres, are equal, therefore:

Vc=Vs\\128\pi=16r^{3}\pi

4. Now, you must solve for the radius:

r=\sqrt[3]{\frac{128\pi}{16\pi}}\\r=2cm

5. The diameter is:

d=2r\\d=2(2cm)\\d=4cm

5 0
3 years ago
Help please , true or false question
wlad13 [49]

Answer:

true

Step-by-step explanation:

5 0
2 years ago
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