Need help plz I'll give you brainlest it isn’t multiple choice plz help it geometry

A parachute is describing at rate of 28 feet per minute find the total change of altitude of the parachuter after 4 mins

Anna11 [10]

A parachute is describing at rate of 28 feet per minute find the total change of altitude of the parachuter after 4 mins.

112 feet

5 0

2 years ago

Which of the following is equal to 5⁄7? <br> A. 45⁄63<br> B. 54⁄63<br> C. 35⁄63<br> D. 42⁄63

Iteru [2.4K]

$\bf \cfrac{45}{63}\implies \cfrac{9\cdot 5}{9\cdot 7}\implies \cfrac{9}{9}\cdot \cfrac{5}{7}\implies 1\cdot \cfrac{5}{7}\implies \cfrac{5}{7}$

7 0

2 years ago

Read 2 more answers

6. The perimeter of a parallelogram is 100 meters. The width of the parallelogram is 4 meters less than its length. Find the len

Ierofanga [76]

Answer:

x = 23, and y = 27.

Step-by-step explanation:

Lets say,

x = width

y = length

this means,

x(2) + y(2) = 100

It also says that the width is 4 meters less than the length.

if we put that into equation form it would look like this,

y - 4 = x

using these 2 equations, we can use the subustusion method to find the x.

x(2) + y(2) = 100

turns in to this :

step 1. (y - 4) (2) + y(2) = 100 - given

step 2. 2y -8 + 2y = 100 - distribute

step 3. 4y -8 = 100 - Combine like terms

step 4. 4y = 108 - Get rid of the 8

step 5 4y/4 = 108 /4 - divide

step 6 . y = 27

So if y is 27, then

x(2) + 27(2) = 100

x(2) + 54 = 100

100 - 54 = 46, so x(2) is 46, but to get x, we need to divide 46 by 2, since x multiplied by 2 equals 46.

46 / 2 = 23 = x

so x = 23, and y = 27.

and the rule that y - 4 = x still applies, since 27 - 4 = 23.

I hope this wasn't confusing! It did take a long time tho.

5 0

2 years ago

PLS HELPPPPPPPPPP MEEEEEEEEE

shtirl [24]

Answer:

A and C

Step-by-step explanation:

Both angles j and m share one common side and vertex with angle k. Angle n only shares a vertex and not a side with angle k, so it is not adjacent.

6 0

1 year ago

A van starts off 191 miles directly north from the city of Morristown. It travels due east at a speed of 25 miles per hour. Afte

coldgirl [10]

Answer:

Distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

Step-by-step explanation:

From the figure attached,

Van starts from C (City of Morristown), reaches the point A 191 miles due North and then it travels with a speed of 25 miles per hour due East from A towards B.

We have to calculate the rate of change of distance BC, when the van reaches point B which is 119 miles away from A.

By Pythagoras theorem in the triangle ABC,

$BC^{2}=AB^{2}+AC^{2}$

Distance AC is constant equal to 191 mi.

By differentiating the equation with respect to time 't'

$2BC.\frac{d(BC)}{dt}=0+2AB.\frac{d(AB)}{dt}$

$BC.\frac{d(BC)}{dt}=AB.\frac{d(AB)}{dt}$

Since BC² = (119)²+ (191)²

BC = √50642 = 225.04 miles

From the differential equation,

$(225.03).\frac{d(BC)}{dt}=119\times 25$ [Since $\frac{d(AB)}{dt}=25$ miles per hour]

$\frac{d(BC)}{dt}=13.22$ miles per hour

Therefore, distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

4 0

3 years ago