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musickatia [10]
3 years ago
13

Heyo last math question for the day- (will give brainliest to best answer)

Mathematics
2 answers:
Bond [772]3 years ago
8 0

Answer:

c :):)::)):):):):):):):):):):):)

aleksandrvk [35]3 years ago
5 0

Answer:

C 5/2

Step-by-step explanation:

we can observe that going from R to R' is an expansion (increase in size) and hence the scale factor must be greater than 1 (i.e the numerator must be larger than the denominator)

the scale factor is simply the ratio of any 2 corresponding sides.

Lets pick the short sides

Short side of R' / Short side of R

= 10/4

= 5/2

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The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
DENIUS [597]

Answer:

The answer is A

Step-by-step explanation:

$20,000 • .12= $2,400

$2,400 • 3= $7,200

$20,000 - $7,200= $12,800

$12,800

4 0
3 years ago
What are the excluded values of the function?
attashe74 [19]

Answer:

a

Step-by-step explanation:

if it -4 or 4 it would be undefined

3 0
4 years ago
Find the sum of the series given in sigma notation.
Kryger [21]

Answer:

Option b is correct 175

Step-by-step explanation:

n = 7

k = 6

3k -2 ------1

put k = 6 in above eq. for finding first term

  a1 = 3(6) - 2  = 18 - 2 = 16

put k = 7 in above eq. for finding first term

 a2 = 3(7) - 2 = 21 - 2 = 19

 a3 = 3 (8) - 2 = 24 - 2 = 22

16, 19 , 22, ...  //Arithmetic series formation

a1 = 16 , a2 = 19

d = a2 - a1 = 19 - 16 = 3 //Difference of first two terms

Using sum forumula for arithmetic series

sum = \frac{n}{2}(2a1 + (n-1)d)

      = \frac{7}{2}(2a1 + (7-1)d)

      = \frac{7}{2}(2(16) + (6)3)

      =  \frac{7}{2}(32 + 18)    

      =  \frac{7}{2}(50)

      = 7 * 25

      = 175




4 0
3 years ago
Solve for the given length. The length of a rectangle is 3m longer than its width. The area of the rectangle is 154^2. What is t
Andre45 [30]
If the length of a rectangle is 3m longer than its width, then:
L=W+3
Is the area really 154^2? Or is it 154m^2? If yes, then:
A=LW
154=(W+3)(W)
154=(W^2+3W)
0=W^2+3W-154
0=(W-11)(W+14)
This means either (W-11) or (W+14) is equal to zero so:
W=11 and W=-14
To find out let's substitute the numbers:
154=(11+3)(11)
154=154
Therefore, the width of the rectangle is 11m
7 0
3 years ago
Read 2 more answers
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shutvik [7]
It’s is 3 weeks long that’s the answer
3 0
4 years ago
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