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REY [17]
3 years ago
10

Another easy question for Branilist.........

Mathematics
2 answers:
gladu [14]3 years ago
6 0

Answer:

-3.5

Step-by-step explanation:

R is between -3 and -4

If is halfway between them, so add  them together and divide by 2

(-3+-4)/2 = -7/3 = -3.5

OLEGan [10]3 years ago
5 0

Answer:

-4.5

Step-by-step explanation:

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What is the distance from C to D?<br><br> A. 5 units<br> B. 1 unit<br> C. 25 units<br> D. 7 units
Vera_Pavlovna [14]

Answer:

Option A

Step-by-step explanation:

According to the distance formula , for any 2 points P & Q whose coordinates are (x¹ , y¹) and (x² , y²) respectively. So ,

PQ = \sqrt{(x^{2} - x^{1} )^{2} + (y^{2} - y^{1})^{2} }

NOTE = HERE x² , y² DOESN'T MEAN THE SQUARES OF x & y . THEY ARE JUST COORDINATES.

According to the question ,

Coordinate of C = (2 , -1)

Coordinate of D = (5 , 3)

Using distance formula ,

CD = \sqrt{(5-2)^{2} + (3 -(-1))^{2} }

=> CD = \sqrt{3^{2} + 4^{2} } = \sqrt{9 + 16} = \sqrt{25} = 5

5 0
3 years ago
Please show work and help me pls
Gekata [30.6K]

Answer:

The answer is 207.

Step-by-step explanation:

If you do 1 ÷ 3 you'd get 3. Then move on too the 1 in 3105. 1 ÷ 1 equals 1. You do that with the 0 and the 5 in 3105. The last step too do is is do the same thing with the 5 in 15. Such as, 5 ÷ 3, 5 ÷ 1, 5 ÷ 0, and lastly 5 ÷ 5. Now if you understand just divide the two numbers in 15, which are 1 and 5 to get the quotient in the division problem. Hope this helps, I'm not the greatest at explaining!

7 0
3 years ago
Write the sum using summation notation, assuming the suggested pattern continues.
Lina20 [59]

<u>ANSWER</u>

\sum _{n = 1} ^{18} (6n - 15)

<u>EXPLANATION</u>

The given series

- 9 - 3 + 3 + 9 + ... + 81

This is an arithmetic series with a common difference of

d =  - 3 -  - 9 = 6

The first term of the series is:

a_1 =  - 9

The general term is given by:

a_n =a_1 + d(n - 1)

a_n = - 9+ 6(n - 1)

a_n = - 9+ 6n - 6

a_n =6n - 15

The last term is 81

We can use this to determine the number of terms in the series.

81=6n - 15

81 + 15=6n

6n = 96

n =  \frac{96}{6}  = 16

The summation notation is:

\sum _{n = 1} ^{18} (6n - 15)

4 0
3 years ago
Please help!!! ill give brainliest!!!
OLEGan [10]

Answer:

the second one

Step-by-step explanation:

if you guys can go to my profile and answer my recent question, id appreciate it w

4 0
3 years ago
Read 2 more answers
Which systems of equations will also have a solution of (2,0)
ELEN [110]

Answer:

x + 4y = 2

7x = 14

8 0
3 years ago
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