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Reptile [31]
3 years ago
13

A line with a slope of -1 passes through points at (2,3) and (5,y). What is the value of "y"??

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0
Line passing through (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)

slope is -1 and points are (2,3) and (5,y)

slope=(y-3)/(5-3)=-1
(y-3)/2=-1
times both sides by 2
y-3=-2
add 3 both sides
y=1


y=1
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How to find a,b and c
alina1380 [7]
33/54 = 44/(a+44)
33(a+44) = 44*54
33a+ 1452 =  2376
33a = 924
    a = 28

c = sqrt (33^2 + 44^2)
c = sqrt(1089 + 1936)
c = sqrt(3025)
c = 55

33/54 = 55/(b+55)
33(b+55) = 55*54
33b+ 1815 =  2970
33b = 1155
    b = 35

answer
a = 28, b = 35, c = 55
3 0
3 years ago
Insert parentheses where needed so that the result of the expression is 2.<br> 45-25 ÷2x2+2
agasfer [191]

Answer:

(45 - 25) / 2 × (2 + 3)

Step-by-step explanation:

Given:

45 - 25/2 × 2 + 3

By trials:

(45 - 25) / (2 × 2) + 3

= 20/4 + 3

= 20/7

Another trial:

(45 - 25)/2 × (2 + 3)

= 20/2 × 5

= 20/10

= 2

The parentheses should be inserted like this

(45 - 25) / 2 × (2 + 3)

3 0
3 years ago
The value of two numbers if their sum is 21 and their difference is 3
iragen [17]

Answer:

9 and 12

Step-by-step explanation:

6 0
3 years ago
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For each annual rate of change, find the corresponding growth or decay factor. -55 %
Marizza181 [45]

The decay factor for the annual rate of change of - 55 % is 0.45.

A quantity must vary by a specific percentage each time period in order for growth or decay to be exponential.

With the function displayed to the right, you may represent exponential growth or decay.

A(x) = a( 1 + r)ˣ

Where A is the amount after x time periods, a is the initial amount, x is the number of time periods, and r is the rate of change.

Now, we have the annual rate of change as:

r = - 55 % = - 55 / 100 = - 0.55

From the function A(x) = a( 1 + r)ˣ , the corresponding factor is 1 + r.

So, let B = 1 + r

B = 1 + r

B = 1 + (- 0.55)

B = 1 - 0.55

B = 0.45

Now, the value of B is less than 1 therefore, the corresponding decay factor is 0.45.

Learn more about growth and decay factor here:

brainly.com/question/16702201

#SPJ4

6 0
1 year ago
What two numbers are exactly four units away from 6
boyakko [2]

Answer:

2 and 10

Step-by-step explanation:

6+4=10, and 6-4=2.

5 0
3 years ago
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