3 years ago

Helppppp can someone answer these questions please

Mathematics

1 answer:

Delvig [45]3 years ago

4 0

Answer:

Can you please tell us your question? Thanks!stiona

Step-by-step explanation:

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Determine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = -5 - 5 cos θ

Grace [21]

Y-axis symmetry=(r, theta)=(-r,theta)
-5-5cos(theta)=r
-r=5+5cos(theta)
no y-axis symmetry
x-axis symmetry=(r,theta)=(r,-theta)
cosine is an even function, so yes it is symmetric around x-axis
origin symmetry=(r,theta)=(-r,theta) or (r, theta+pi)
no, as there is no y-axis symmetry

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3 years ago

Solve the system using substitution. Show all work.

Brrunno [24]

Here is the answer I hope it helps

4 0

3 years ago

the total cost of new automobile including 6% sales tax is $24542. how much of the total cost is sales tax

forsale [732]

% means out of 100 so If its 6% that = .06 then just multiply
$.06 \times 24542$

5 0

3 years ago

What is the approximate diameter of a sphere with a volume of 34 cm

Nutka1998 [239]

Answer:

<h3>The diameter is 4cm</h3>

Step-by-step explanation:

Volume of a sphere is

$V = \frac{4}{3} \pi {r}^{3}$

Where r is the radius

diameter = radius × 2

To find the diameter we must first find the radius

Volume = 34cm³

That's

$34 = \frac{4}{3} \pi {r}^{3} \\ \\ 34 \times 3 = 4\pi {r}^{3} \\ \\ 102 = 4\pi {r}^{3} \\ {r}^{3} = \frac{102}{4} \pi \\ \\ r = \sqrt[3]{ \frac{51}{2\pi}} \\ \\ r = 2.01 \\ \\ r = 2.0 cm$

Diameter = 2 × 2cm

Hope this helps you

6 0

3 years ago

A camera has a list price of $579.99 before tax. If the sales tax rate is 7.25%, find the total cost of the camera with sales ta

dezoksy [38]

Answer:

519.99(.0825) = 42.899

519.99 + 42.899 = $562.89

Step-by-step explanation:

3 0

2 years ago

Helppppp can someone answer these questions please ​

Helppppp can someone answer these questions please