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3 years ago

Find the 8th term of the geometric sequence 7, 28, 112, ...

Mathematics

1 answer:

Bumek [7]3 years ago

4 0

I got 114688 by going up x4

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Question 6 of 25 What is sin 45°?

guajiro [1.7K]

Answer:

$\frac{1}{ \sqrt{2} }$

3 0

2 years ago

Please help me I need help please

MakcuM [25]

Answer:

p = 4

Step-by-step explanation:

Given equation:

$x^2+(p-3)y^2-4x+6y-16=0$

Standard equation of a circle:

$(x-a)^2+(y-b)^2=r^2$

(where $(a,b)$ is the centre of the circle, and $r$ is the radius)

If you expand this equation, you will see that the coefficient of $y^2$ is always one.

Therefore, $p-3=1$

$\implies p=1+3=4$

Additional information

To rewrite the given equation in the standard form:

$\implies x^2+y^2-4x+6y-16=0$

$\implies x^2-4x+y^2+6y=16$

$\implies (x-2)^2-4+(y+3)^2-9=16$

$\implies (x-2)^2+(y+3)^2=16+4+9$

$\implies (x-2)^2+(y+3)^2=29$

So this is a circle with centre (2, -3) and radius √29

3 0

2 years ago

Solve the formula for the indicated variable. T(r+s)=rs, for r (Simplify your answer.)

yaroslaw [1]

Answer:

$R = \frac{-TS}{(T-S)}$

Step-by-step explanation:

First, distribute all terms

$T(R+S) =RS\\TR + TS =RS$

Get all terms with R onto the same side

$TR + TS = RS\\TR - RS = -TS$

Factor out the R

$R(T-S)=-TS$

Divide by (T-S) to isolate R

$R = \frac{-TS}{(T-S)}$

5 0

3 years ago

Read 2 more answers

The double number line below shows the approximate number of kilograms in a certain number of pounds

pshichka [43]

3 pounds = 1.5 kilograms
so 9 pounds = 1.5 * 3 = 4.5 kilograms

3 0

3 years ago

(3.2 x 8.1) + (3.2 x 1.9)= x (8.1 + 1.9)

marin [14]

Answer:

oh god i uh-

Step-by-step explanation:

7 0

3 years ago