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Jobisdone [24]
3 years ago
12

Midsegment of triangle Find the distance across the lake

Mathematics
2 answers:
Marizza181 [45]3 years ago
6 0

Answer:

The distance across the lake is 3.5 km

Step-by-step explanation:

Hypotenuse is divided in equal parts. Thus both sides are divided in the same proportion.

sergiy2304 [10]3 years ago
6 0

Step-by-step explanation:

find the length of the bottom

7•X( full length) and y•(x/2)

use scale factors (ratios)

7:y so 7/y=scale factor

(full length):(haft the length)

(full lengtb)/(haft the length)

( make sure you know in to km) (ruler)

Next

7/2

3.5

h2=3.5

only for

finding area

find area of triangle 1/2bh

the one problem would be of cource the missing area of the shaded part.

but what im guessing is you might need to find where each end of the shaded region ends (measure the farthest distances of shaded region) and start subtracting area of the triangle. (parts of the triangle that you know have no shaded parts to them).

There is also another way but you have to cut the paper and find total burn time for that shaded part and the triangle and than convert to km

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(2w-5)(w+7) so far I got 2w^2 + 9w + ?
FromTheMoon [43]

Answer:

=2w2+9w−35

Step-by-step explanation:

(2w+−5)(w+7)

(2w)(w)+(2w)(7)+(−5)(w)+(−5)(7)

2w2+14w−5w−35

2w2+9w−35

7 0
2 years ago
PLEASE HELP ASAP WILL GIVE BRAINLIEST AND 50 POINTS IF ANSWER RIGHT
Bess [88]
Yes it is a very good prediction

7 0
3 years ago
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A bag contains 5 red marbles, 3 blue marbles, 7 yellow marbles, and 2 green marbles. Which ratio can be used to compare the yell
liraira [26]

\dfrac{7}{3}


so D 7 over 3

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3 years ago
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When reflecting over the x-axis, the y value change.

When reflecting over the y-axis, the x value change.
5 0
2 years ago
Write the name of a vector with a magnitude of 13 in algebraic form that is perpendicular to the line 7x + 2y =6. Please explain
Kamila [148]

Answer:

The vector is < 91 / sqrt(53),26 / sqrt(53)>  or <-91 / sqrt(53),-26 / sqrt(53)>

Step-by-step explanation:

7x + 2y =6

We need to find the slope so we solve for y

Subtract 7x from each side

7x -7x+ 2y =-7x+6

2y = -7x +6

Divide by 2

2y/2 = -7x /2 + 6/2

y = -7/2 x +3

The slope is -7/2

We want it perpendicular so the slope must be the negative reciprocal

m = -(-2/7)

   = 2/7

Vectors are written in the form  

v = <  x, y>

slope = change in y over change in x

So y/x = 2/7  or 7y =2x

Now we worry about the magnitude

Magnitude is sqrt(x^2 + y^2) and it equals 13

sqrt(x^2 + y^2)= 13

square both sides

x^2 + y^2 = 169

We have 2 equations and 2 unknowns

y = (2/7x)

x^2 +(2/7x) ^2 = 169

x^2 +4/49 x^2 =169

49/49 x^2 +4/49 x^2 = 169

53/49  x^2 = 169

x^2 = 169 *49/53

Take the square root of each side

x = ±91 / sqrt(53)

y =  (2/7x)

   = 2/7 * ±91 / sqrt(53)

   = ±26 / sqrt(53)

The vector is < 91 / sqrt(53),26 / sqrt(53)>  or <-91 / sqrt(53),-26 / sqrt(53)>

6 0
3 years ago
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