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Radda [10]
3 years ago
8

Please i really need help

Mathematics
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
2 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
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