All categories

3 years ago

2/5(5k+35) -8 =12 please helpppppppp

Mathematics

2 answers:

balu736 [363]3 years ago

8 0

See attachment for math work and answer.

Mrac [35]3 years ago

3 0

Answer:

k =3

Step-by-step explanation:

2/5(5k+35) -8 =12

Add 8 to each side

2/5(5k+35) -8+8 =12+8

2/5(5k+35) =20

Multiply each side by 5/2

5/2 *2/5(5k+35) =20*5/2

5k+35 = 50

Subtract 35 from each side

5k+35-35 = 50-35

5k = 15

Divide by 5

5k/5 = 15/5

k =3

You might be interested in

Which property of equality would you use in the first step of solving this equation 2x-6=12

svetoff [14.1K]

Answer:

Step-by-step explanation:

i dont know

4 0

3 years ago

Read 2 more answers

Help me 3x+1/10=x-1/7 ok so I understand that I'm supposed to cross multiply so 1 x 10=10 7x3=21 so now do i do 21x-7? please He

koban [17]

Simplify both sides of the equation

3x+1/10 = x+ -1/7

Subtract x from both sides

3x+1/10 -x = x+ -1/7 -x

2x+1/10 = -1/7

Subtract 1/10 from both sides

2x+1/10 - 1/10 = -1/7 -1/10

2x= -17/70

Divide both sides by 2

2x/2 = -17/70/2

x= -17/140

decimal x will equal -0.121

Ask any questions you want and I hope that's help !

8 0

3 years ago

Find the measurements

Elanso [62]

Answer:

angle 2=120°

angle 1=60

Step-by-step explanation:

70+50=120

180-(70+50)=60

angles on a straight line add up to 180°

180-60=120

3 0

1 year ago

Need help asap please

il63 [147K]

Answer:

$\displaystyle 77$

Step-by-step explanation:

Isosceles triangles will always tell you what you need to know. All angles are congruent, therefore all edges are congruent. ‍♂️

I am joyous to assist you at any time.

8 0

2 years ago

How many of the first 15 positive integers can be written as the sum of three squares?

Jlenok [28]

Answer

no number from the following list can be expressed as the sum of three squares: 7, 15, 23, 31, 39, 47, ect... so only once

Step-by-step explanation:

nono dont touch me there this is my nono square

3 0

2 years ago