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Elis [28]
3 years ago
14

What is the Evaluate the expression. 15.6−(−13.7−8.5)

Mathematics
1 answer:
harkovskaia [24]3 years ago
6 0

15.6 - (-22.2)

15.6 + 22.2

37.8

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X : 18 : 30 =36 : 27 : y, find the value of x and y
svetlana [45]
X = 24
y = 45


Mark brainliest please

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4 0
3 years ago
Please Help!!
Harlamova29_29 [7]
The answer is C


You would distribute the 5 so 5 times x= 5x


and 5 times positive 10 = 50

You are left with 5x=50
4 0
4 years ago
Read 2 more answers
Which of the following expressions is equal to x² + 36? *
mash [69]

Answer:

{x}^{2}  + 36 \\ factors : -  6i \: and \: 6 i\\   = {x}^{2}  + 6i - 6i + 36 \\  = (x - 6i)(x - 6i) \\  = ( {x - 6i)}^{2}

8 0
3 years ago
If a line has a midpoint at (2,5), and the endpoints are (0,0) and (4,y), what is the value of y? Please explain each step for a
Dovator [93]

Answer:

y = 10

Step-by-step explanation:

To find the y coordinate of the midpoint, take the y coordinates of the endpoints and average

(0+y)/2 = 5

Multiply each  die by 2

0+y = 10

y = 10

3 0
3 years ago
pleaseeee help!!! What is the 21st term in the arithmetic sequence in which a3 is 59 and a7 is 103 (enter only the term)
GuDViN [60]

Answer: 257

Step-by-step explanation:

Given that:

a3 = 59

a7 = 103

The nth term of an Arithmetic Progression (A. P) is given by:

an = a1 + (n-1)d

Where a1 = first term of the sequence ;

d = common difference

Therefore a3 = 59 can be represented thus:

a3 = a1 + (3-1)d = 59

a3 = a1 + 2d = 59 - - - - (1)

a7 = 103

a7 = a1 + (7-1)d = 103

a7 = a1 + 6d = 103 - - - - - (2)

Subtracting (2) from (1)

(2d - 6d) = (59 - 103)

-4d = - 44

d = 11

Substitute d= 11 into (1)

a1 + 2d =59

a1 + 2(11) = 59

a1 + 22 = 59

a1 = 59 - 22

a1 = 37

The 21st term:

a21 = a1 + (21 - 1)d

a21 = 37 + 20(11)

37 + 220 = 257

6 0
3 years ago
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