pls help me with all the questions

Given:

In [tex]\Delta DE F,EM=12,FJ=60,MK=11[/tex].

M is the centroid of the triangle DEF.

To find:

The lengths of MJ, DM and EL.

Solution:

We know that the centroid is the intersection points of medians of a triangle and centroid divides each median in 2:1.

M is the centroid of the triangle DEF. It means DK, EL, FJ are medians and M divides these segments in 2:1.

It is given that [tex]FJ=60[/tex].

[tex]MJ=\dfrac{1}{2+1}FJ[/tex]

[tex]MJ=\dfrac{1}{3}(60)[/tex]

[tex]MJ=20[/tex]

Therefore, the length of MJ is 20 units.

Let DM and MK are 2a and a. It is given that, [tex]MK=11[/tex]. Then

[tex]a=11[/tex]

Now,

[tex]DM=2a[/tex]

[tex]DM=2(11)[/tex]

[tex]DM=22[/tex]

So, the length of DM is 22 units.

Let EM and ML are 2a and a. It is given that, [tex]EM=12[/tex]. Then

[tex]2a=12[/tex]

[tex]a=\dfrac{12}{2}[/tex]

[tex]ML=6[/tex]

Now,

[tex]EL=EM+ML[/tex]

[tex]EL=12+6[/tex]

[tex]EL=18[/tex]

So, the length of EL is 18 units.

solution,

slope(m) = y2-y1/ x2-x1

= 4+7/1+3

=11/4

I hope this is correct, the formula can be wrong so pls double check if u have formula.

Answer:

the answer is 2 lol

Step-by-step explanation:

thanks for points

Answer:

hope this helps you out five is a little harder to read sorry

Answer:

They both are correct

Step-by-step explanation:

It is given that :

The length of the trail is = 1/4 of a mile

Angelo rode his bike around the trail = 8 times

So Angelo said that he rode his bike around the trail for = 8/4 miles

Terresa says Angelo actually rode his bike = 2 miles

They both are correct as 8/4 mile is equal to 2 miles in the simplified form.

So both of them are correct.

Answer:

$332

Step-by-step explanation:

Answer:

RQ = 5 cm

ST = 8 cm

Answer:

15 ; yes

Step-by-step explanation:

Base = 15 inches

Height = 10 inches

Area of triangle = 1/2* base * height

Area of triangle = 0.5 * 15 * 10

Area of triangle = 75 in²

Area of trapezium < 2(75)

Area of trapezium, A

A = 1/2*(x+b)h

x = top base ; b = bottom base ; h = 10

1/2*(x + 15)10 < 150

5x + 75 < 150

5x < 150 - 75

5x < 75

x < 15

Hence, Area of trapezoid :

A = 1/2 * (15 + 15)10

A = 1/2 * (30)10

A = 1/2 * 300

A = 150

Hence, Area of trapezium can be twice the area of triangle.

2(75) = 150

Answer:

They are called vertical angles but are also known as "Vertically Opposite Angles"

Step-by-step explanation:

can i get brainliest im 1 away from ranking up

Answer:

"Vertical" refers to the vertex

Vertical angles are pair angles formed when two lines intersect. Vertical angles are sometimes referred to as vertically opposite angles because the angles are opposite to each other.

Step-by-step explanation:

The angles opposite each other when two lines cross. They are always equal. In this example a° and b° are vertical angles. "Vertical" refers to the vertex (where they cross), NOT up/down. They are also called vertically opposite angles.

Answer:

2 7/8

Step-by-step explanation:

Let's convert to common denominator

3/8 = 3/8

2 1/2 = 2 4/8

3/8 + 2 4/8 = 2 7/8

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

C:  Exponential function

Step-by-step explanation:

This is an exponential function.  While the terms decrease steadily, they do not decrease by subtraction of any common difference.  Definitely not a linear function (y = mx + b) or a quadratic (ax^2 + bx + c) either.

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the net of the prism is not shown.

However, I will give a general explanation on how to determine the net of the three popular prisms.

(1) Rectangular prism.

It is made up of 6 rectangles

(2) Triangular prism

It consists of 3 rectangles and 2 triangles

(3) Square prism

It is made up of 6 squares

See attachment for the net of each prism

Answer:

[tex] \displaystyle 2 \sin(x) + 2x \cos( \alpha ) + \rm C[/tex]

Step-by-step explanation:

we would like to integrate the following integration:

[tex] \displaystyle \int \frac{ \cos(2x) - \cos(2 \alpha ) }{ \cos(x) - \cos( \alpha ) } dx[/tex]

notice that you can simplify the integrand

recall that,

[tex] \displaystyle \cos(2 \theta) = 2 \cos(\theta) ^{2} - 1[/tex]

thus substitute:

[tex]\displaystyle \int \frac{ 2\cos^{2} (x)- 1 - \{2\cos ^{2} (\alpha ) - 1 \} }{ \cos(x) - \cos( \alpha ) } dx[/tex]

remove parentheses:

[tex]\displaystyle \int \frac{ 2\cos^{2} (x)- 1 - 2\cos ^{2} (\alpha ) + 1}{ \cos(x) - \cos( \alpha ) } dx[/tex]

[tex]\displaystyle \int \frac{ 2\cos^{2} (x) - 2\cos ^{2} (\alpha ) }{ \cos(x) - \cos( \alpha ) } dx[/tex]

factor out 2:

[tex]\displaystyle \int \frac{ 2(\cos^{2} (x) - \cos ^{2} (\alpha )) }{ \cos(x) - \cos( \alpha ) } dx[/tex]

we can use algebraic identity i.e

a²-b²=(a+b)(a-b) to factor the denominator

[tex]\displaystyle \int \frac{ 2(\cos^{} (x) + \cos ^{} (\alpha ))( \cos(x) - \cos( \alpha ) ) }{ \cos(x) - \cos( \alpha ) } dx[/tex]

reduce fraction:

[tex]\displaystyle \int \frac{ 2(\cos^{} (x) + \cos ^{} (\alpha ))( \cancel{\cos(x) - \cos( \alpha ) ) }}{ \cancel{\cos(x) - \cos( \alpha ) }} dx[/tex]

[tex] \displaystyle \int 2( \cos(x) + \cos( \alpha ) )dx[/tex]

distribute:

[tex] \displaystyle \int 2 \cos(x) + 2\cos( \alpha ) dx[/tex]

use sum integration formula:

[tex] \rm \displaystyle \int 2 \cos(x) dx+ \int2\cos( \alpha ) dx[/tex]

recall integration rules:

[tex] \displaystyle 2 \sin(x) + 2x \cos( \alpha ) [/tex]

and we of course have to add constant of integration

[tex] \displaystyle 2 \sin(x) + 2x \cos( \alpha ) + \rm C[/tex]

Answer:

76

Step-by-step explanation:  and explain

Answer:

Step-by-step explanation:

hello : here is an solution

Answer:

length of C'B' is 4 units

length of CB is 8 units

the larger hexagon is twice as large as the smaller; scale is 2:1

Step-by-step explanation:

Answer:

Algebraic Expression:

[tex]8f - 2[/tex]

Answer:

(8f)-2

Step-by-step explanation:

8 times f is multiplication, take two away is subtraction.

Answer:

9.7cm

Step-by-step explanation

According to the sine rule;

a/sinA = c/sinC

8/sin55 = c/sin82

Cross multiply

csin55 = 8sin82

c(0.8192) = 8(0.9903)

c = 8(0.9903)/0.8192

c = 7.9221/0.8192

c = 9.67

Hence the value of c to the nearest tenth is 9.7cm

Answer:

ba is the correct answer

Answer:

CA

Step-by-step explanation:

sana makatulong po ❤❤

Answer:

touchdown babay

Step-by-step explanation:

score touchdowns

Answer:

arrange 3+4=5

Step-by-step explanation:

because 3 square = 9 and 4 square =16 and their sum is 25 and the square of 5 is 25 . both are same .

Hence proved

Answer: y = 4x - 4

Step-by-step explanation:

The line goes through -4 on the y axis meaning its y intercept is -4

and the line goes up by 4 ( that being the slope )

Answer:

[tex] \frac{9 \sqrt{3} }{3 \sqrt{5} } \\ = \frac{3 \sqrt{3} }{ \sqrt{5} } [/tex]

Hope it helps!

Answer:

71

Step-by-step explanation:

64+3×5-8

64+15-8

79-8

71

Answer:

71

Step-by-step explanation:

4^3 = 64 + 15 = 79 - 8 = 71

Give me my brainllest

Answer:

2x + 2x + x - 8 = 4 (x + 2)

x = 16

Step-by-step explanation:

Because that's a square, the perimeter would be 4s where s is the measure of the side:

2x + 2x + x - 8 = 4 (x + 2)

To solve, refer below:

2x + 2x + x - 8 = 4x + 8

5x - 8 = 4x + 8

5x = 4x + 8 + 8

x = 16

Answer: A.3

Step-by-step explanation:

Answer:

The commutative property.

Answer:

.

Step-by-step explanation:

Answer:

[tex]\frac{n^4p+n^2}{p^3} \\[/tex]

Step-by-step explanation:

We are given the equation [tex]\frac{n^4}{p^2} + \frac{n^2}{p^3}[/tex]

To solve we need to first find the LCM of the denominators, which would be [tex]p^3[/tex].

[tex]\frac{n^4p}{p^3} + \frac{n^2}{p^3}[/tex]

Now combine the fractions to get the final answer :

[tex]\frac{n^4p+n^2}{p^3} \\[/tex]

Answer:

61 pennies

Step-by-step explanation:

d + p = 99

0.1d + 0.01p = 4.41

d = 99 - p

0.1(99 - p) + 0.01p = 4.41

9.9 - 0.1p + 0.01p = 4.41

-0.09p = -5.49

p = 61

Answer: 61 pennies