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3 years ago

How many total possible outcomes are there in the sample when you are flipping 3 coins: a penny, a nickel, and a dime?

Mathematics

1 answer:

photoshop1234 [79]3 years ago

7 0

8 because when you flip one coin there is 2 outcomes: heads and tails. Therefore if you flip 3 of them it is 2*2*2=8

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Lara's dining room is 22 feet wide and 23 feet long. Lara wants to install wooden trim around the top of the room. The trim cost

JulsSmile [24]

I will assume the trim costs $3 per sq.ft
area of rectangle=lenght× width
22×23=506sq.ft

if 3 per sq.ft
the how much for 506?
3×506= $1518

8 0

3 years ago

Please i need an answer urgently. Sum of 3 terms are 252, first term is 192. Find common ratio

Viefleur [7K]

Answer:

$r=\frac{1}{4}\\\\r=-\frac{5}{4}$

Step-by-step explanation:

<u>Geometric Sequences</u>

The geometric sequence is given as:

$a_1, a_1r, a_1r^2, a_1r^3,..., a_1r^{n-1}$

Where n is the number of the term, n≥1, and r is the common ratio.

The sum of n terms of the geometric sequence is given by:

$\displaystyle S_n=a_1\frac{r^n-1}{r-1}$

We are given: S3=252, a1=192, thus substuting:

$\displaystyle 252=192\frac{r^3-1}{r-1}$

Dividing by 12:

$\displaystyle 21=16\frac{r^3-1}{r-1}$

Recall that:

$r^3-1=(r-1)(r^2+r+1)$

Substituting:

$\displaystyle 21=16\frac{(r-1)(r^2+r+1)}{r-1}$

Simplifying:

$21=16(r^2+r+1)=16r^2+16r+16$

Rearranging:

$16r^2+16r+16-21=0$

16r^2+16r-5=0

Rewriting:

$16r^2-4r+20r-5=0$

Factoring:

$4r(4r-1)+5(4r-1)=0$

$(4r-1)(4r+5)=0$

Solving:

$r=\frac{1}{4}\\\\r=-\frac{5}{4}$

Both solutions are valid

6 0

3 years ago

Which of the following is not an attribute of a parrellogram

Tems11 [23]

Answer: C: Parrellogram

Step-by-step explanation:

If the four sides do not connect at their endpoints, you do not have a closed shape; no parallelogram! If one side is longer than its opposite side, you do not have parallel sides; no parallelogram! If only one set of opposite sides are congruent, you do not have a parallelogram, you have a trapezoid.

4 0

3 years ago

I still dont understand how they got 50

patriot [66]

I’m lost cuz there ain’t no problem? Lol

3 0

3 years ago

Read 2 more answers

The park has space for the base of the slide to be 7-feet wide. To keep the proportional to the model, what will height of the s

rusak2 [61]

THE ANSWER IS: 6 feet

7 0

3 years ago