MATHEMATICS MIDDLE SCHOOL

William says that 15 years from now, his age will be 3 times his age 5 years ago. If x represents William's present age, complete the followingsentences.
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15 years
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x - 15 = 3(x + 5)
x + 15 = 3(x - 5)
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The equation representing William's claim is
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TEVE
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VE 1
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William's present age is
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Answers

Answer 1
Answer:

Answer:

william is 15 now

Step-by-step explanation:

x+15 = 3(x-5)

x+15 = 3x - 15

15 = 2x-15

30 = 2x

15 = x

    15-5 = 10               10*3 =30         15+15 =30

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You and a friend baked 400 cupcakes together. if your friend baked 60% of the cupcakes, how many cupcakes did you bake?

Answers

160 cupcakes

If your friend baked 60% of 400 total, that means that the remaining amount of cupcakes that you baked is 100% – 60% = 40%. So, we must find 40% of 400

To do this, first we must convert 40% into decimal form. We can do this by dividing it by 100:    40 ÷ 100 = 0.4

Then, "of" usually means multiplication. In this case, it does, so to find 40% of 400, we must calculate 0.4 • 400

0.4 • 400 = 160, so you baked 160 cupcakes
Your friend baked 60% so (60/100) x 400 = 240

400 - 240 = 160

How resolve x+1-2- (-x+3)=6-1(1-1)

Answers

x-1+x-3=6-1(0)

2x-4=6

2x=10

x=5

x+1-2-(-x+3)=6-1(1-1)\n\nx+(1-2)-(-x)-(+3)=6-1(0)\n\nx+(-1)+x-3=6-0\n\nx-1+x-3=6\ \ \ \ |\text{use commutative and associative property}\n\n(x+x)+(-1-3)=6\n\n2x-4=6\ \ \ \ |\text{add 4 to both sides}\n\n2x=10\ \ \ \ \ |\text{divide both sides by 2}\n\n\boxed{x=5}

Bill is in a class of 15 boys and 35 girls. 40% of the students in the class take the bus to school. How many students do not take the bus to school?

Answers

Answer:

30 students not take bus to school .

Step-by-step explanation:

As given

Bill is in a class of 15 boys and 35 girls.

Total number of students in the class = Number of boys + Number of girls

                                                              = 15 + 35

                                                              = 50

As given

40% of the students in the class take the bus to school.

40% is written in the decimal form.

= (40)/(100)

= 0.40

Number of students take bus to school = 0.40 × Total students in class.

                                                                  = 0.40 × 50

                                                                  =  20

Thus

Students not take bus to school = Total students - Number of students take bus to school

                                                      = 50 - 20

                                                      =  30

Therefore 30 students not take bus to school .
all\ students=girls+boys\n\nall\ students=15+35=50\n\n40\%\ of\ 50 \n40\%*50=0,4*50=20 \n\n50-20=30\n\n30\ students\ don't\ take\ the\ bus.

Liam has 9/10 gallon of paint for painting the bird houses he sells at the craft fair. Each bird house requires 1/20 gallon of paint. How many birdhouse a can Liam paint?

Answers

Liam can paint 18 bird houses.

Plz help me with this

Answers

Answer:  arithmetic

Step-by-step explanation:

An arithmetic sequence is when you ADD a number (d) to the previous number to create the next numbers in the sequence.

A geometric sequence is when you MULTIPLY a number (r) to the previos number to create the next numbers in the sequence.

n_1 = 3+(1)a\nn_2=3+(2)a\nn_3=3+(3)a

Notice that "a" is added to each term in the sequence.

Which is not something that energy can do?• A. Be completely used up.
•B. Cause an object to move.
•C. Change an objects temperature.
•D. Change into other forms of energy.

Which one is it can you please help me? !

Answers

A. Be completely used up.⇒ NO
B. Cause an object to move.⇒ YES
C. Change an object's temperature.⇒YES
D.Change into other forms of energy⇒.YES
A energy can never be completely used up. When something "runs out of energy" it just runs out of use able energy that can be used to do the task that it was doing in the first place so it is now useless to that object and it must move on to be used for a different object.
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