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mina [271]
2 years ago
6

Find the distance between the points (-4,-5) and (2,5)

Mathematics
2 answers:
Alexxx [7]2 years ago
6 0

Answer:

11.66

Step-by-step explanation:

√(-4-2)²+(-5-5)²

√(36)+(100)

√136

11.66

Vikki [24]2 years ago
3 0

Answer:

2 \sqrt{34}

Step-by-step explanation:

\sqrt{(x2 - x1) {2}^{} }  +   \sqrt{(y2 - y1)}

\sqrt{(2 - ( - 4)) {}^{2}  + (5 - ( - 5)) {}^{2} }

\sqrt{(2 + 4) { }{ {}^{2} + (5 + 5) {}^{2}  } }

\sqrt{36 + 100}

\sqrt{136}

= 2 \sqrt{34}

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the sum of ava’s and grace’s ages is 35. Ava is one year less than three time Grace’s age. How old is Ava, x and Grace, y expres
pantera1 [17]

Answer:

Ava is 26 and Grace age is 9

Step-by-step explanation:

x=ava's age

y=grace's age

3y-1=x

x+y=35

Substitute 3y-1 to x+y=35 for the value of x to find grace age

3y-1+y=35

  4y-1=35

     +1  +1

4y=36

y=9       now substitute 9, the y value in 3y-1=x  to find ava's age

3(9)-1=x

x=26

to verify; 26+9=35

true 35=35

 

6 0
3 years ago
Please help me I’m super stuck
andrezito [222]

Answer:

What's the question?

Step-by-step explanation:

3 0
3 years ago
Y+7=-2(x-1)<br><br><br> hurry plz
zhannawk [14.2K]

Answer:

y=-2x-5

Step-by-step explanation:

First of all, you have to distribute -2 to (x-1) to get to this equation y+7=-2x+2.  Then, you subtract 7 on both sides to get the slope-intercept of y = -2x - 5.

8 0
3 years ago
The dot product of u with itself is 12. What is the magnitude of u?
Brilliant_brown [7]
Dot product is 
a*b = |a|*|b|*cosα.
In our case
u*u =|u|*|u|*cos 0
u*u =|u|*|u|
12=|u|²
|u|=√12=√(4*3)=2√3
Answer: <span>D. 2√3</span>
5 0
3 years ago
3(у - 3) - 2(у 4) = 4​
Dennis_Churaev [7]

Answer:

y = 5

Step-by-step explanation:

3(у - 3) - 2(у -4) = 4​

Distribute

3y -9 -2y +8 =4

Combine like terms

y -1 =4

Add 1 to each side

y-1+1 = 4+1

y = 5

3 0
3 years ago
Read 2 more answers
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