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ELEN [110]
3 years ago
12

Which of these best describes a scientific theory

Mathematics
1 answer:
Sidana [21]3 years ago
4 0

Answer:

B.

Step-by-step explanation:

Have a good day i hope this helps :)

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Sharon bought 6 new folders for $1.15 each and 15 pens that were priced at 5 for $4.75. What is the total amount she spent?
inessss [21]

Answer:

$21.15

Step-by-step explanation:

6 x 1.15 = 6.9 (because we're working with money, we'll add a zero at the end for the ones place) = 6.90

15/5 = 3 then 3 x 4.75= 14.25

14.25 + 6.90 = 21.15

Hope this helped <3

6 0
3 years ago
Read 2 more answers
Ramon wants to make an acute triangle with three pieces of wood. So far, he has cut wood lengths of 7 inches and 3 inches. He st
Anna35 [415]

Answer:

7.6 inches to make an acute triangle

Step-by-step explanation:

a^2+b^2=c^2

7^2+3^2=c^2

49+9=c^2

58=c^2

Square root both sides

c=7.6 inches

3 0
4 years ago
Read 2 more answers
Could someone help me please
Nina [5.8K]

Answer:

The first one is m A + 30 + 90 = 180

Second is 60

Step-by-step explanation:

A triangle’s added up angles ALWAYS equals 180.

The formula here is to subtract the two known angles from 180 and the answer leaves you with the unknown angle.

180 - 90 - 30 = A

So,

180 - 90 - 30 = 60

You can check by adding all the angles and it adding up to 180

90 + 30 + 60 = 180

3 0
3 years ago
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Please help me with this. I am stuck on this like glue on this problem<br>​
Black_prince [1.1K]

\bf \begin{array}{ccll} term&value\\ \cline{1-2} s_5&10\\ s_6&10r\\ s_7&10rr\\ s_8&10rrr\\ &10r^3 \end{array}\qquad \qquad \stackrel{s_8}{80}=10r^3\implies \cfrac{80}{10}=r^3\implies 8=r^3 \\\\\\ \sqrt[3]{8}=r\implies \boxed{2=r} \\\\[-0.35em] ~\dotfill

\bf n^{th}\textit{ term of a geometric sequence} \\\\ s_n=s_1\cdot r^{n-1}\qquad \begin{cases} s_n=n^{th}\ term\\ n=\textit{term position}\\ s_1=\textit{first term}\\ r=\textit{common ratio}\\ \cline{1-1} n=8\\ s_8=80\\ r=2 \end{cases}\implies 80=s_1(2)^{8-1} \\\\\\ 80=s_1(2)^7\implies \cfrac{80}{2^7}=s_1\implies \cfrac{80}{128}=s_1\implies \boxed{\cfrac{5}{8}=s_1}

4 0
3 years ago
NEED HELP ASAP!!! Angles of Elevation and Despression! Need to find y!
Soloha48 [4]

Answer:

Hey there!

We have cosine 61=y/500

cosine 61(500)=242.4 ft.

Let me know if this helps :)

3 0
3 years ago
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