MATHEMATICS MIDDLE SCHOOL

Need help .i don’t understand this

Answers

Answer 1

Answer:

63; Use the order of operations, parenthesis, exponents, multiplication, division, addition, subtraction (PEMDAS).

3^2-2

9-2

7+8*7

7+56

Answer 2

Answer: the answer is 63............

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1. If 1 cm represents 10 m, what are the actual measurements of the gym includingthe closet?
2. What are the actual measurements of the closet?
3. If 1 cm represents 12 m, what are the actual measurements of the gym including
the closet?
4. What is the area of the gym?

Answers

Answer:

1. 50 meters by 40 meters

2. 20 meters by 10 meters

3. 60 meters by 48 meters

4. DrawingGym Area = 18 sq. cm. and Actual Gym Area = 2592 sq. m.

Step-by-step explanation:

The drawing length of the GYM+CLOSET area is:

5 cm by 4 cm

Since 1 cm represents 10 m in real life, we can say the real life dimensions are:

5cm * 10 = 50 meters

4 cm * 10 = 40 meters

THe actual measurements of gym (including closet):

50 meters by 40 meters

The drawing measurement of the closet would be:

2 cm length given and 1 cm width given

Since we know 1 cm represents 10 meters in real life, the actual measurements would be:

1cm * 10 = 10 meters

2 cm * 10 = 20 meters

The actual dimensions of closet:

20 meters by 10 meters

Gym + Closet area is still 5cm by 4cm in the drawing.

Now, the scale changes. The new scale is:

1cm = 12 meters

So,

5cm * 12 = 60 meters

4 cm * 12 = 48 meters

The actual measurement of Gym and Closet (new scale):

60 meters by 48 meters

First, let find the area of the gym. This will be total area - closet area

We know area of rectangular figure is Length * Width

SO,

Total Area = 5 * 4 = 20

Closet Area = 2 * 1 = 2

Thus,

Gym Area = 20 - 2 = 18

Gym Area = 18 sq. cm.

In real life (1cm = 12 m -- new scale), Gym Area would be:

Gym Area = $18cm^2*(12m)/(1cm)*(12m)/(1cm)=18*12*12m^2=2592m^2$

Actual Gym Area = 2592 sq. m.

How do you turn -3 1/3 into a negative fraction decimal

Answers

Dear Joanna243, what do you mean by a "negative fraction decimal". You can't have a fraction and a decimal at the same time. I'll solve it anyway. Take 1/3 and do 1÷3 to get approximately 0.33, then you plug the -3 with 0.33 to get -3.33

First you do 1÷3=0.333.......
1/3 can be turn into 0.33...

So, after that it will be -3.33......
If you round it will be -3.33

Archie earns $6 each week for doing his chores. He puts all but $2 into a savings account. How much money will Archie save in 2 months if there are 4 weeks in each month?

Answers

Answer: in 8 weeks he will save $32

Step-by-step explanation: there are 8 weeks in 2 months so he will save $4 per week multiplied by 8 weeks

So 4*8 =$32

Answer:

$16

Step-by-step explanation: 2 * 4=8+8=16

A rectangular park has an area of 2/3 square mile. The length of the park is 2 2/3 the width of the park. What is the width of the park?

Answers

Area of the rectangular park = 2/3 square mile
Let us assume the width of the rectangular park = x
Then
The length of the rectangular park = 2 2/3 * x mile
= 8x/3 mile
Then
Area of the rectangular park = Length * Width
2/3 = (8x/3) * x
2/3 = 8x^2/3
(2 * 3)/3 = 8x^2
2 = 8x^2
x^2 = 2/8
x^2 = 1/4
x^2 = (1/2)^2
x = 1/2
So the width of the park is 1/2 feet.

Which expression is equivalent to |a|≤3 ? a ≥ –3 and a ≤ 3 a ≤ –3 or a ≥ 3 a ≤ –3 and a ≥ 3 a ≥ –3 or a ≤ 3

Answers

Answer:

a ≥ –3 and a ≤ 3

Step-by-step explanation:

|a|≤3 ⇔ -3 ≤ a ≤ 3 ⇔ a ≥ –3 and a ≤ 3

Answer:

a ≥ –3 and a ≤ 3

Step-by-step explanation:

Add:
1⁄2 + 2⁄5 + 1⁄4 =

Answers

$(23)/(20)$

Answer:

i think that the answer is 23/20

Step-by-step explanation: