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Sergio [31]
3 years ago
13

Find the sum of the first 21 terms of the sequence 5,9, 13, 17, 21, ...

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
8 0
21(5+85)/2= 21•45= 945
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110% of 72<br><br> Show work pls.
Paha777 [63]
Answer: 79.2
Explanation: 110% as a decimal is 1.10
1.10 x 72=79.2
3 0
3 years ago
An equation of the line that passes through the points (3,5) and (6,7) in point-slope form
Oliga [24]

Answer:

y-5=1/4(x-3)

Step-by-step explanation:

first you need to find the slope.

5-7 over 3-6 = -1/-4 or 1/4

next put into point-slope form.

y-y1=m(x-x1)

or y-5=1/4(x-3)

7 0
3 years ago
Please help!! Need an explanation by tomorrow and I am super confused!
vovangra [49]

Answer:

x = 35

y = 7

Step-by-step explanation:

See how the image looks like two overlapping triangles. It is given that the triangles are congruent. Its easier to see whats what if you draw the triangles separately. I also flipped over the triangle on the right so they match. Record the given angle measures. Since A is 45° then D is also 45°. DBC is 30°, so we can find the missing angle in triangle DBC. Angles in a triangle add up to 180° so

C + 45 + 30 = 180

C + 75 = 180

C = 105°

This is angle DCB.

Now all the angles are marked. We can set up equations to find x and y. see image.

7 0
2 years ago
Shelly has a plan to save $500 for a trip that is 8 weeks away. She already has $50 in her
FromTheMoon [43]

Answer:

She will still need about 450$

Step-by-step explanation:

So from what I have learned, she will need to work in order to get the money, but even when she is working, she may have expenses to pay and she may not make it, but she will because she can do loans and when she earns the money from loans, then she can pay, then she may have left over money she can use while on trip.

3 0
2 years ago
Read 2 more answers
What is the square root of -625
loris [4]

Answer:

  25i

Step-by-step explanation:

Your calculator or your knowledge of powers of 5 will tell you that √625 is 25. The minus sign makes the root imaginary.

  \sqrt{-625}=\sqrt{(-1)(25^2)}=25\sqrt{-1}=25i

6 0
3 years ago
Read 2 more answers
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