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3 years ago

8

Please i really need help

1 answer:

Ber [7]3 years ago

5 0

76 and72 north 72 and south 76 thanks and you welcome

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To see how fast the moss was growing students recorded how long it took the moss to cover a rule. After one hour, the moss had c

Grace [21]

Answer:

The moss will cover $2\frac{11}{24}$ inches of the ruler after 2 days.

Step-by-step explanation:

After one hour, the moss had covered $1\frac{1}{8}$ inches of the ruler.

Again, after two hours, it had covered another $1\frac{1}{3}$ inches of the ruler.

Therefore, after two hours the moss covers altogether ( $1\frac{1}{8} + 1\frac{1}{3}$ ) inches of the ruler.

Now, ( $1\frac{1}{8} + 1\frac{1}{3}$ )

= $\frac{9}{8} + \frac{4}{3}$

= $\frac{9\times 3 + 4 \times 8}{24}$

= $\frac{59}{24}$

= $2\frac{11}{24}$ inches

Therefore, the moss will cover $2\frac{11}{24}$ inches of the ruler after 2 days. (Answer)

4 0

3 years ago

Make a conjecture about 5 to the power of 2 minus 6 to the power of 2= 5 +4 =9

Inessa [10]

5^2 - 6^2
is the difference of 2 squares
and = (5-6)(5+6) = -11

3 0

3 years ago

Solve 5r2 – 12 = 68. {±4} {±5} {±3} {±6}

sashaice [31]

Hey there!

Assuming you meant

$5r^2 - 12 = 68$

If so, follow these steps so it can be a little bit easier to solve

Firstly, we have to $add$ by $12$ on each of your sides

$5r^2 -12 +12 \\ \\ 68 + 12$

$5r^2 = 5r^2 \\ \\ 68 + 12 = 80$

We get: $5r^2 =80$

Now, we have $divide$ by $5$ on each of your sides

$\frac{5r^2}{5} = \frac{80}{5}$

$\frac{80}{5} = 16$

We get: $r^2 = 16$

$r =$ ± $\sqrt{16}$

Therefore , your answer is: $r =$ ± $4$

Good luck on your assignment and enjoy your day!

~ $LoveYourselfFirst:)$

3 0

3 years ago

LAW OF SINES??? NEED HELP.

snow_tiger [21]

Answer:

Step-by-step explanation:

We know by the Triangle Angle-Sum Theorem that the angles of a triangle all add up to equal 180. So we find angle B:

180 - 82 - 55 = 43

So angle B = 43. Now we can use the Law of Sines to solve for side b:

$\frac{sin(55)}{8}=\frac{sin(43)}{b}$

Cross multiply to get

b sin(55) = 8 sin(43) and divide to solve for b:

$b=\frac{8sin(43)}{sin(55)}$ so

b = 6.6605

3 0

3 years ago

Find the oth term of the geometric sequence 9, -27, 81, ...

Novosadov [1.4K]

It would b 9 x (-3^(x-1))

6 0

2 years ago