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3 years ago

Which shows a perfect square trinomial?

1 answer:

4 0

Both (m + n)2 and 36 are perfect squares, and 12(m + n) is twice the product of (m + n) and 6. Since the middle term is positive, the pattern is (a + b)2 = a2 + 2ab + b2. Place the x2 tile, 4 x-tiles and 4 1-tiles in the grid. Fill the outside sections of the grid with x-tiles and 1-tiles that complete the pattern.

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The current in a simple electric circuit varies inversely as the resistance. If the current is 20amps when the resistance is 5 o

IrinaVladis [17]

Answer:

0.5amps

Step-by-step explanation:

I is inversely proportional to resistance

I = k/R

k = I/ R

k = 20/5

k = 4

This means that, I = 4/R

So, when R = 8ohms,

I = 4/8

=0.5amps

3 0

3 years ago

Members of a basketball team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it

Nadusha1986 [10]

Answer:

The trial provides enough evidence that the probability of obtaining heads is less than 0.50 and that the coin is unfair.

Step-by-step explanation:

The explanation is in the picture

5 0

2 years ago

What is the circumference of the following circle?

satela [25.4K]

Answer:

9.42 or 3pi

Step-by-step explanation:

equation of a circle is 2*pi*r

2r is d which is 3 so the answer would be 3pi which equals about 9.42

4 0

2 years ago

A pyramid has a square base and a height of 6 ft. The volume of the pyramid is 162 ft^3. Let s be the length of a side of the py

geniusboy [140]

Answer:

$(a)s^2\\(b)162=2s^2\\(c)s=9$ ft$

Step-by-step explanation:

(a)Base Area

Side length of square base=s

Area of a Square of side length s= $s^2$ ft^2$

(b)

Height =6 ft
Volume= $162 $ ft^3.$

Volume of a Pyramid $=\frac{1}{3}X$Base Area X Height$

Substituting the given values, we have:

$162=\frac{1}{3}Xs^2 X 6\\\\162=2s^2$

(c)Solving the equation derived from (b)

$162=2s^2\\$Divide both sides by 2\\s^2=81\\s^2=9^2\\s=9$ ft$

Solving this equation shows that s =9 ft.

4 0

3 years ago

Algebra 2 help needed asap

gtnhenbr [62]

Answer:

The number of beads Emery uses to calculate how many 4 necklaces and 7 bracelets are 152 beads.

Step-by-step explanation:

This is a simultaneous equation.

let's make n the number of necklaces, and b the number of bracelets.

8n + 3b = 172. 1st equation

1n + 5b = 77. 2nd equation.

you have to make one of the Bs or the Ns the same.

I chose B. it doesn't matter which side you choose.

40n + 15b =860. I multiplied by 5

3n + 15b =231. I multiplied by 3

then you subtract. because the signs are the same.

40n - 3n = 37n, 15n - 15n = 0, 860 - 231 = 629

37n =629. we divide both sides by 37

n = 17. one necklace has a total of 17 beads.

we substitute to find the number of bracelets (b).

choose any of the 1st or 2nd equations.

1n + 5b = 77

(17) + 5b = 77

5b = 77- 17

5b = 60

b = 12. one bracelet has a total of 12 beads.

NOW: find how many beads Emery uses to calculate how many 4 necklaces and 7 bracelets.

equation: 4n + 7b = ?

4(17) + 7(12) = 152

which means there are 152 beads.

YOU SHOULD BE GRATEFUL. :D

8 0

2 years ago