Find the area of right triangle def,round to nearest tenth if necessary D(-6,-1),E(1,-3),F(3,4)
HELP

Answer:

Step-by-step explanation:

ΔABD ≅ ΔACD    {A S A congreunt}

∠ADB ≅ ∠ADC   {CPCT}

∠ADB + ∠ADC = 180   {linear pair}

2∠ADB = 180

∠ADB = 180/2

∠ADB = 90

∠ADB = ∠ADC = 90.

So, now we can use Pythagorean theorem to find x

x² = 8² - 2²

   = 64 - 4 = 60

x = √60

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Let's Simply :

Answer:

(-4 1/5) - (-13 1/10) = 8.9

If you want to EVALUATE IT than the answer is 107.42.

Step-by-step explanation:

Answer:

204768

Step-by-step explanation:

You just need to multiply 3762 with 54

3% of 70 means "0.03 x 70" which is 2.1.

The sales tax is $2.10.

Step-by-step explanation:

line A and D are parallel because they have the same koeficient 3=3

line C is perpendicular to line A because

k1*k2=-1

3*(-1/3)=-1

which is a true statement

Answer:

a) Line D is parallel to line A

b) Line C is perpendicular to line A

Step-by-step explanation:

Line A has a slope of 3 and y intercept of 6

Line C is perpendicular to A as perpendicular lines have negative reciprocal slopes. Slope of C is -1/3

Line D is parallel to A as parallel lines have identical slopes but different y intercepts. Slope of D is 3 and y intercept is -1/3

Line B mirrors Line A over the y axis. It's slope is the negative of A and it has an identical y intercept.

Answer:

x = 1

Step-by-step explanation:

I'm going to convert this to decimal to make it easier to type

Since x = 1, there is no need to include it in the equation

1/4 - 8 = -7.75 + 12 = 4.25

-0.75 + 5 = 4.25

Answer:

By simplifying both sides of the equation, then isolating the variable.

X=1

Step-by-step explanation:

1/4*1-8+12=-3/4*1+5

Answer:

x = 120°

The triangle is an equilateral triangle and all the angles in an equilateral triangle equal 60°.

Straight lines have 180° angles.

180 -  60 = 120

Step-by-step explanation:

2 3/4 gallons in 3 2/3 minutes

equal to :

11/4 ÷ 11/3 =

11/4 × 3/11 =

3/4 gallons per minutes

or

0.75 gpm

Speed

Answer:

$2.30

Step-by-step explanation:

Price- $15.18

Ounces- 6.6

$15.18 ÷ 6.6

=$2.30

Answer:

Step-by-step explanation:

Identity used: [tex]a^{2}-b^{2} = (a + b)(a -b)[/tex]

81 = 9*9 = 9²

a = x^2 and  b =9

Then again 9 = 3*3.In this way, (x² - 9 ) can be again factored

[tex]x^{4} - 81 = (x^{2})^{2}-9^{2}\\\\=(x^{2} + 9)(x^{2} - 9)\\\\=(x^{2}+9) (x^{2} -3^{2})\\\\= (x^{2} + 9}(x+3)(x-3)[/tex]

Answer:

D

Step-by-step explanation:

Definitely needs to serve some detention with Miss Trunchbull.

im so sorry i dk.............

Answer:

4+g=14

g=14-4

g=10

Step-by-step explanation:

please mark me as brainlest

Answer:

the answer is the third one

Step-by-step explanation:

a) [tex]-4\geq x\geq -1[/tex]

x <= -4 and x >= -1

b) [tex]2<x\leq 4[/tex]

x > 2 and x <= 4

c) [tex]3 > x > 9[/tex]

x < 3 and x > 9

d) [tex]-5 \leq x < 0[/tex]

x >= -5 and x < 0

Hope this helps!

Answer:

exploration is the answer I got

Answer:

y = -2/4x -5

Step-by-step explanation:

Assuming that the answer will be in slope intercept form, and not standard form. It would go a little like this:

Finding the slope:

y2 - y1/x2 - x1

-6 - (-4) / 2 -(-2)

-6 + 4 / 2 + 2

-2/4

Simplifying further, the slope would be: -1/2

The slope would be -1/2.

Now, checking desmos, the equation would be: y = -2/4x -5.

Answer:

2:1

Step-by-step explanation:

to make the smaller triangle turn into the bigger triangle, each side has to be multiplied by a factor of 2. double the little triangle and you will get the bigger one

Answer:

2

Step-by-step explanation:

f(x) starts at the orgin, (0, 0), and g(x) starts at (0, 2)

With this information we can decide that k is 2 as it moved the line up 2

(hope this helps, I see that is Canvas, good luck!)

Answer:

(2r-3)-4=37

or,(2r-3)=37+4

or,2r-3=41

or,2r=41+3

or,2r=44

or, r= 44/2

hence , r= 22

Answer:

Ima guess 60

Step-by-step explanation:

9514 1404 393

Answer:

  60°

Step-by-step explanation:

The exterior angle is equal to the sum of the remote interior angles:

  100° = 40° +∠B

  60° = ∠B . . . . . . . . . . . . . subtract 40° from both sides

Answer:

x=2y

Step-by-step explanation:

y=-2x+4 is perpendicular to the line which passes through (2,1). We know that we can use the formula y=mx+c to find the gradient of the line with the equation y=-2x+4, which will give you -2. The product of the gradient of two perpendicular lines is always -1. So the gradient of the line which passes through (2,1 ) is -½.

Now,to find the equation of the line,we use the formula y-y1=m(x–x1)which will give you the answer 2y=x when solved.

Answer with Step-by-step explanation:

m<A=m<J=20

In JOE,

80+20+m<O=180[Angles of a trinagle]

m<O=80=m<M

m<E=m<Y=80

One option (that I would use):

Ignore the decimals and multiply 13 x 916.

    9 1 6

  x    1 3

 2 7 4 8

 9 1 6 0

1 1 9 0 8

OK, now take into account there were a total of three digits to the right of decimal points (3, 1, and 6), so your answer also needs three digits to the right of your decimal point.

Answer 11.908

Answer:

pc wuidorn8

Step-by-step explanation:

It's a fraction. At the numerator we have : -5+9×4-2+(8-3)×6 = -5 + 36 -2 + 5×6 = -5 +36-2 +30= 31-2+30 = 29+30= 59

59/2 = 29.5 +3 = 32.5

Step-by-step explanation:

1/ 3 is the probability of getting one head

Answer:

Step-by-step explanation:

Let the 3-digit number is abc = 100a + 10b + c.

We have:

Simplify the first equation:

Solve for c by substitution:

Find a:

Find b:

The number is: