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3 years ago

What is the distance between (-5,-5) and (-9,-2)

Mathematics

1 answer:

ollegr [7]3 years ago

5 0

Answer:

use the distance Formula D=sqrt of {(x1-x2)^2+(y1-y2)^2}

Step-by-step explanation:

So(-5--9)^2 + (-5- -2)^2 =

(4)^2 + (-3)^2 =

16 + 9 = 25

and the square root of 25 is 5.

5 is the answer

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Solve each equation check your solution<br> 2(3b-1)=40

vitfil [10]

Answer:

b=7

Step-by-step explanation:

2(3b-1)= 40

divide both sides by 2

3b-1 = 20

then add 1 to each side

3b = 21

then divide both sides by 3

b = 7

then check 2(3*7-1) = 40

3 0

3 years ago

Read 2 more answers

Solve:<br> 2y + 5x=30<br> y = 3x + 4

mafiozo [28]

Replace the second equation y=3x+4 into the first one:
2(3x+4)+5x=30
Now solve for x:
6x+8+5x=30
11x=30-8
11x=22
x=22/11
x=2
Finally, replace x=2 into y=3x+4
y=3*2+4
y=6+4 = 10
So the anwer is x=2, y=10

6 0

4 years ago

Elisa withdrew $24 at a time from her bank account and withdrew a total of $192. Frances withdrew $46

N76 [4]

Answer: Elisa

Step-by-step explanation: the first one did 8 withdraws the second one did 5 withdraws

(divide the total by the amount withdrawn each time)

7 0

4 years ago

Read 2 more answers

The Hero House Restaurant has 200 tables. On a recent evening, there were reservations for 1/10 of the tables. How many tables w

earnstyle [38]

Answer:

There were 20 tables reserved. 1/10 is equivalent to 10%. To find 10%, divide the total number of tables by 10. 200/10 = 20.

Step-by-step explanation:

6 0

3 years ago

Use the Pythagorean Theorem to find an approximate value of x

kozerog [31]

Answer:

Step-by-step explanation:

Hypotenuse² =base² + altitude²

(3x + 4)² = (2x + 1)² + (3x)²

{Use (a+b)² = a² + 2ab + b²}

(3x)² + 2*3x+4 + 4² = (2x)² + 2*2x*1 + 1² + 9x²

9x² + 24x + 16 = 4x² + 4x + 1 + 9x²

9x² + 24x + 16 = 13x² + 4x + 1

0 = 13x² + 4x + 1 - 9x² - 24x - 16

13x² - 9x² + 4x - 24x +1 - 16 = 0

4x² - 20x - 15 = 0

a = 4 ; b =-20 ; c = -15

D = b² - 4ac = (-20)² - 4*4*(-15) = 400 + 240 = 640

√D = √640 = 25.30

$x=\dfrac{-b+\sqrt{D}}{2a} \ ; \ x=\dfrac{-b-\sqrt{D}}{2a}\\\\\\x=\dfrac{20+25.30}{2*4} \ ; \ x=\dfrac{20-25.30}{2*4}\\\\\\x=\dfrac{45.30}{8} \ ; \ x =\dfrac{-5.30}{8}\\\\$

x = 5 .66 ; x = -0.66

Ignore x = -0.66 as length of a side cannot be negative

Answer : x = 5.66

7 0

3 years ago