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Ainat [17]
3 years ago
12

I need help with this problem 2•1/2+4(4•2-7)

Mathematics
1 answer:
Pepsi [2]3 years ago
3 0

Answer:

5

Step-by-step explanation:

  • 2×1/2 + 4×(4×2 - 7) =          ⇒ multiplication
  • 1 + 4×(8 - 7) =                      ⇒ parenthesis
  • 1 + 4×1 =                              ⇒ multiplication
  • 1 + 4 =                                 ⇒ addition
  • 5                                         ⇒ answer
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Simplify<br>( 2 4/5 * 1 3/10) * 1 1/2 ​
Rashid [163]

Answer:

( 2 4/5 * 1 3/10) * 1 1/2 = 5 23/50

Step-by-step explanation:

( 2 4/5 * 1 3/10) * 1 1/2 = 14/5 x 13/10 x 3/2 = 546/100 = 5 46/100 = 5 23/50

4 0
3 years ago
Read 2 more answers
The figures are similar. Give the ratio of the perimeters and the ratio of the areas of the first figure to the second.
pickupchik [31]

Answer: first option.

Step-by-step explanation:

The ratio of the area of the triangles can be calculated as following:

ratio_{(area)}=(\frac{l_1}{l_2})^2

Where l_1 is the lenght of the given side of the smaller triangle and l_2 is the lenght of the given side of the larger triangle.

Therefore:

ratio_{(area)}=(\frac{28}{32})^2=\frac{49}{64}

It can be written as following:

ratio_{(area)}=49:64

The ratio of the perimeter is:

ratio_{(perimeter)}=\frac{l_1}{l_2}

Where l_1 is the lenght of the given side of the smaller triangle and l_2 is the lenght of the given side of the larger triangle.

Therefore:

ratio_{(perimeter)}=\frac{28}{32}=\frac{7}{8}

It can be written as following:

ratio_{(perimeter)}=7:8

5 0
3 years ago
Terri Clifford bought a Sunday dress for $36. The sales tax was 6%. Find the total cost of the dress.
Kipish [7]
Total cost is $38.16

Multiply 36 by 0.06 (2.16)
Add 2.16 to 36 (38.16)
6 0
3 years ago
Read 2 more answers
How do you solve and show work for <br>624 divided by 8<br>​
natali 33 [55]

pls mark as brainlist

Step-by-step explanation:

624 divided by 8 = 78

7 0
3 years ago
Read 2 more answers
Select the correct answer.
IceJOKER [234]

Answer: Option D. y+2x=3


Solution

If a line with a slope of -2:

Slope: m=-2

crosses the y-axis at (0,3):

(0,3)=(0,b)→b=3

What is the equation of the line?

y=mx+b

Replacing the known values:

y=-2x+3

Adding 2x both sides of the equation:

y+2x=-2x+3+2x

y+2x=3


4 0
3 years ago
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