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natita [175]
3 years ago
12

Explain the difference between 4 times the sum of x and y and the sum of 4 times x and u

Mathematics
1 answer:
natita [175]3 years ago
5 0
4 times the sum of x and y is:
4(x+y) where you're multiplying the expression x+y four times. the sum of 4 times x and y is: 4x+y where you only multiply x four times and y is left out of the multiplication.
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What number is 36% of 85
Wittaler [7]

I think it would be 30.6

4 0
3 years ago
Read 2 more answers
Please answer the following questions​
laila [671]

Answer:

4a) 110 square centimetres

4b) 127 square centimetres

6) 292 square centimetres

8) 800 tiles

Step-by-step explanation:

4. We need to find the area of the large rectangle and then deduct the area of the unshaded part:

a) The large rectangle has dimensions 12 cm by 15 cm. Its area is:

A = 12 * 15 = 180 square centimetres

The unshaded part has a length of 15 - (3 + 2) cm i.e. 10 cm and a width of 7 cm. Its area is:

a = 10 * 7 = 70 square centimetres

Therefore, the area of the shaded part is:

A - a = 180  - 70 = 110 square centimetres

b) The large rectangle has dimensions 13 cm by 11 cm. Its area is:

A = 13 * 11 = 143 square centimetres

The unshaded part has dimensions 8 cm by 2 cm. Its area is:

a = 8 * 2 = 16 square centimetres

Therefore, the area of the shaded part is:

A - a = 143 - 16 = 127 square centimetres

6. The background area of the space not covered by the photograph is the area of the frame minus the area of the photograph.

The frame has dimensions 24 cm by 18 cm. Therefore, its area is:

A = 24 * 18 = 432 square centimetres

The photograph has dimensions 14 cm by 10 cm. Therefore, its area is:

a = 14 * 10 = 140 square centimetres

Therefore, the background area of the space not covered by the photograph is:

A - a = 432 - 140 = 292 square centimetres

8) The floor has dimensions 8 m by 4 m. The area of the floor is:

A = 8 * 4 = 32 square centimetres

Each square tile has dimensions 20 cm by 20 cm. In metres, that is 0.2 m by 0.2 m. The area of each tile is:

a = 0.2 * 0.2 = 0.04 square metres

The number of tiles that are needed is the area of the floor divided by the area of each tile:

A / a = 32 / 0.04 = 800 tiles

4 0
3 years ago
A college has a financial aid formula that applies to applicants whose family's income is below a certain threshold. The financi
DochEvi [55]

Answer:

1.) 10000, -3, 1000 ; doesn't make sense

2.) 40000, 3, 40000 makes sense

3.) 32500, 1.5, 32500 makes sense

4.) [0,+ ∞ ]

Step-by-step explanation:

1.) r(-3) = 2500 - 3*5000=10000

2.) f(3) = 25000 + 3*5000 = 40000

3.) f(1.5) = 25000 +1.5*5000= 325000

4.) # of siblings must >= 0

3 0
2 years ago
Alicia is making headbands using ribbon she would like to make to make 12headbands each one requires 15.5 inches of ribbon she e
Umnica [9.8K]
Do 15.5×12
then you will know how much ribbon you need. Hope that helps!

6 0
3 years ago
You are designing an icon for a mobil app. Use the provided ruler to answer the following questions.
makkiz [27]

Answer:

a. Scale Perimeter : 2.5 centimeters

Actual Perimeter : 13 centimeters

Actual Area : 10.5 square centimeters

b. Actual Perimeter : 130 mm

Actual Area : 1,050 mm

Step-by-step explanation:

a. 2.5 mm = 0.25 cm

2 (1 + 0.25) = 2.5

2 (3.5 + 3) = 13

3.5 x 3 = 10.5

b. 3.5 cm = 35 mm 3 cm = 30 mm

2 (35 + 30) = 130

35 x 30 = 1050

7 0
2 years ago
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