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3 years ago

12

A rectangular banner measures 3 ft by 7 ft. How much material do you need for seven banners?

1 answer:

Ksivusya [100]3 years ago

6 0

147ft of material I’m pretty sure

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Someone please help me I suck @ simplifying thank you

ycow [4]

The anwer is 67/72 and can not be simpled any more

5 0

2 years ago

Sine is opposite divided by hypotenuse. So the sine of an angle times the hypotenuse is the length of the opposite side. What is

valkas [14]

Answer:

10 m

Step-by-step explanation:

opposite = sin30° × 20 = $\frac{1}{2}$ × 20 = 10 m

7 0

1 year ago

What is the radius of of a circle with a circumference of 36π cm?

Readme [11.4K]

I hope this helps you

Circumference=2pi.r

36pi.=2pi.r

r=36/2

r=18

5 0

3 years ago

Read 2 more answers

How many different ways can you choose 5 books from a shelf containing 12 books? Type a numerical answer in the space provided.

yanalaym [24]

There are 792 different ways of choosing 5 books from a shelf containing 12 books. This problem can be solved using the combination formula of mathematics. The combination formula of mathematics is a number of way of selecting thing from a collection and the formula stated as n(n-1)...(n-k+1)/k(k-1)...1 (Calculation: 12*11*10*9*8/5*4*3*2*1 = 95040/120 = 792)<span>.</span>

4 0

3 years ago

Please help me right away with these problems.

viktelen [127]

Q.34

$\sum\limits_{k=1}^{\infty}420\left(1.002\right)^{k-1}$

The infinite geometric series is converges if |r| < 1.

We have r =1.002 > 1, therefore our infinite geometric series is Diverges

Answer: c. Diverges, sum not exist.

Q.35

$\sum\limits_{k=1}^{\infty}-5\left(\dfrac{4}{5}\right)^{k-1}$

The infinite geometric series is converges if |r| < 1.

We have r = 4/5 < 1, therefore our infinite geometric series is converges.

The sum S of an infinite geometric series with |r| < 1 is given by the formula :

$S=\dfrac{a_1}{1-r}$

We have:

$a_1=-5\left(\dfrac{4}{5}\right)^{1-1}=-5\left(\dfrac{4}{5}\right)^0=-5\\\\r=\dfrac{4}{5}$

substitute:

$S=\dfrac{-5}{1-\frac{4}{5}}=-\dfrac{5}{\frac{1}{5}}=-5\cdot\dfrac{5}{1}=-25$

Answer: c. Converges, -25.

4 0

3 years ago