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Luden [163]
3 years ago
15

the coordinates for the endpoints of a line segment are (-5,13) and (-9,21). find the coordinates for the midpoint of the line s

egment. a. (-7, 17) b. (-4, 4) c. (-2, 4) d. (4, 17)
Mathematics
1 answer:
dedylja [7]3 years ago
8 0
The midpoint of AB where A(x_A;\ y_A) and B(x_B;\ y_B)

\left(\dfrac{x_A+x_B}{2};\ \dfrac{y_A+y_B}{2}\right)

A(-5;\ 13);\ B(-9;\ 21)

The midpoint of AB: \left(\dfrac{-5+(-9)}{2};\ \dfrac{13+21}{2}\right)=\left(\dfrac{-14}{2};\ \dfrac{34}{2}\right)=(-7;\ 17)

Answer: A. (-7, 17)

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For number 7 the answer should be 20%. 10 is 50% and the other 6 is 30%.
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June has 30 days. A family of 3 used 3,960 gallons of water during the month of June. How many gallons of water did each person
lys-0071 [83]

Answer:

44 gallons

Step-by-step explanation:

3960/3=1320

Each person used 1320 in one month

1320/30=44

Amount of person used / 30 days = gallons used each day

6 0
3 years ago
Mr. Andrews is saving to buy a violin that costs $1,000. He has already saved $450 and decides to put all of this money into a n
Korolek [52]

Answer:

1000=450 (1+ 0.06) y

                         4

Step-by-step explanation:

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7 0
3 years ago
Determine the value of c so that f(x) is continuous on the entire real line when
mixer [17]

Answer:

A. -4

Step-by-step explanation:

Given the function f(x) = x + 3 for x ≤ -1 and 2x - c for x > -1, for the function to be continuous, the right hand limit of the function must be equal to its left hand limit.

For the left hand limit;

The function at the left hand occurs at x<-1

f-(x) = x+3

f-(-1) = -1+3

f-(-1) = 2

For the right hand limit, the function occurs at x>-1

f+(x) = 2x-c

f+(-1) = 2(-1)-c

f+(-1) = -2-c

For the function f(x) to be continuous on the entire real line at x = -1, then

f-(-1) = f+(-1)

On equating both sides:

2 = -2-c

Add 2 to both sides

2+2 = -2-c+2

4 =-c

Multiply both sides by minus.

-(-c) = -4

c = -4

Hence the value of c so that f(x) is continuous on the entire real line is -4

6 0
3 years ago
Which of these numbers is irrational?
Sidana [21]
<span>Which of these numbers is irrational?
a. square root of 3
b. 0.25
c. 1/5
d. square root of 9

answer
</span><span>a. square root of 3
</span><span>--------------------------------
What is (-7)^5 in expanded form?
a. -7 • -7 • -7 • -7 • -7 
b. -7 • 5
c. (-7) • 7 • (-7) • 7 • (-7) • -7
d. 5 • 5 • 5 • 5 • 5 • 5 • 5

answer

</span><span>a. -7 • -7 • -7 • -7 • -7 </span>
6 0
3 years ago
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