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ryzh [129]
3 years ago
13

What the distance between (2,1) and (-5,8)

Mathematics
2 answers:
viva [34]3 years ago
7 0
Exact form = 7 √2
Decimal form= 9.899
Brut [27]3 years ago
4 0

Answer:

\sqrt{98} or 9.89949

Step-by-step explanation:

use the distance formula

d=\sqrt{(x_{2}-x_{1} )^{2} +(y_{2}-y_{1})^{2}    }

d=\sqrt{(-5-2)^{2}+(8-1)^{2}  }

d=\sqrt{(-7)^{2} +(7)^{2} } \\\\\sqrt{49+49}

d=\sqrt{98} or 9.89949

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I NEED HELP PLEASE
VLD [36.1K]

Answer:

y=2x+13

Step-by-step explanation:

find gradient which is -2

-7-3/0--5=-10/5 =-2

y-3 =-2. (cross multiply)

x--5

y-3=2x+10

y=2x+13

4 0
2 years ago
A plane rises from take off and flies at an angle 11° with the horizontal runway. When it has gained 750 feet find the distance
kogti [31]

Answer:

D=3930.632298 \approx 3930.6miles

Step-by-step explanation:

From the question we are told that

Angle  \theta=11\textdegree

Height of plane h  =750feet

Generally the equation for the total distance flown is mathematically given by

D=\frac{h}{sin\theta}

D=\frac{750}{sin11}

Therefore total distance flown is

D=3930.632298 \approx 3930.6miles

7 0
3 years ago
???????????????????????????????????????
mart [117]

Answer:

Its C (Third Multiple Choice Answer)

Step-by-step explanation:

The reason being that x + 1 / 2 (6x - 4) = 6 is the way it is instead of the first step being x + 6x / 2 - 4 / 2 = 6 is because it is using legal manipulation by multiplying the 1 / 2 out.

Math:

First

2 * (x + 1 / 2 (6x - 4) = 6 * 2 [In this case the x gets multiplied by 2 and multiplies 2 to the other side as well. The reason why it isn't a Distributive Property in the first place is because we are using multiplication only and the equation is not 1 / 2 (6x - 4).

Then

2x + 6x - 4 = 12 will then equal to 8x - 4 = 12 which is adding like terms

Thirdly

(+ 4) + 8x - 4 = 12 (+ 4) [The parenthesis is to identify that the 4 is positive]

will then turn into 8x = 16

Finally

By dividing 8 on both sides of the previous equation

8x / 8 = 16 / 8 equaling x = 2.

6 0
3 years ago
in a certain town there were 113 robberies last year this year the number of robberies has gone down 14% how many robberies were
Aleonysh [2.5K]

Answer:

99 robberies

Step-by-step explanation:

What you are basically doing is taking the discount.

1 + 14% = 1.14

113 / 1.14 = 99.12

6 0
3 years ago
Please help me with this question
mars1129 [50]

Answer:

<h2>4/5</h2>

Step-by-step explanation:

Look at the picture.

sine=\dfrac{opposite}{hypotenuse}

We need a hypotenuse length.

Use Pythagorean theorem:

hypotenuse^2=leg^2+leg^2

We have

leg=9,\ leg=12,\ hypotenuse=x

Substitute:

x^2=9^2+12^2\\\\x^2=81+144\\\\x^2=225\to x=\sqrt{225}\\\\x=15

For the sine we have:

opposite=12, hypotenuse=15

Substitute:

\sin\alpha=\dfrac{12}{15}=\dfrac{12:3}{15:3}=\dfrac{4}{5}

3 0
3 years ago
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