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kumpel [21]
3 years ago
5

In circle A, marc BC is 67° and marc EF is 74°:

Mathematics
2 answers:
motikmotik3 years ago
8 0

Answer:

The other guy is correct, it's 70.5

Step-by-step explanation:

faltersainse [42]3 years ago
7 0

Answer:

70.5

Step-by-step explanation:

just took the test

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The equation 2(m-8)+3=17 has more than one solution method. Give at least two different "first steps" to solve this equation.
Troyanec [42]
1. you could distribute the 2 which would give you 2m - 16 + 3 = 17
2. You could add the 2 and 3 together and the problem would be 5(m - 8) = 17
4 0
3 years ago
The half-life of iron-52 is approximately 8.3 hours.How much of a 13 gram sample of iron-52 would remain after 8 hours? Round to
Alexandra [31]

6.665 grams of the 13 grams remain after 8 hours.

<h3>How much of a 13 gram sample of iron-52 would remain after 8 hours?</h3>

The decay equation for the 13 grams of iron-52 is:

N(t) = 13g*e^{(-ln(2)/8.3h)*t}}

Where N is the amount of iron-52, and t is the time in years.

Where we used the fact that the half-life is exactly 8.3 hours.

Now, the amount that is left is given by N(8h), so we just need to replace the variable t by by 8 hours, so we get:

N(8h) = 13g*e^{(-ln(2)/8.3h)*8h}} = 6.665g

So 6.665 grams of the 13 grams remain after 8 hours.

If you want to learn more about half-life:

brainly.com/question/11152793

#SPJ1

5 0
1 year ago
Simplify:<br><br><br>4(r + 1) + 3r<br><br> A. 4r + 4<br> B. 5r + 1<br> C. 7r + 1<br> D. 7r + 4
klasskru [66]

Answer:

look in the explanation, it is in there

Step-by-step explanation:

i don't know if you are distributing or just using PEMDAS .

if you are distributing then: do in the equation 4(r + 1) + 3r.. do 4 x r and 4 x 1 , now you have 4r + 4 + 3r

                        7r +4

                      is what i got!

If you are doing PEMDAS then: first you do what is inside the perenthisis ()

4(r + 1) +3r changes into

4( r1 ) + 3r now you do multipulcation because that in the "M" in pemdas

4r + 3r, then if you are using like terms you would add them

7r

i hope this helps you out!

6 0
3 years ago
Read 2 more answers
Can somebody please help me
MaRussiya [10]

Answer:

201.06

Step-by-step explanation:

The volume of a cylinder is the area of the base (\pi 2^2) times the height (16).

3 0
3 years ago
Read 2 more answers
OK can someone help me on this one...?
aksik [14]

2. multiplication property of equality

3. subtraction property of equality

4. addition property of equality

5. division property of equality

8 0
3 years ago
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