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Flura [38]
3 years ago
9

Show how u got the answer 309×42

Mathematics
1 answer:
luda_lava [24]3 years ago
4 0
                3            
                1
                390
              x  42
               -------
                1282
              1564
          ----------------
                       
the answer would be 16380
Hope this helped :)
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Carl is drawing blueprints for a new building. Although the building will be 40 feet (480 inches) tall, his drawing is only 10 i
STatiana [176]

Answer:

48:1

Step-by-step explanation:

In this case we know the actual size and the size in the drawing therefore we can calculate its scale.

What we must do is divide the actual size by the size in the drawing. We know the actual size is 480 inches and in the drawing the size is 10 inches, so:

480/10 = 48

Which means that the relationship between the real and the drawing is 48:1

7 0
3 years ago
Describe how the point-slope formula is useful when writing the equation of a trend line
Hitman42 [59]

Answer:

Trend lines are lines used to approximate the general shape of a scatter plot. A positive trend line tells us the scatter plot has a positive correlation. A negative trend line tells us the scatter plot has a negative correlation.

5 0
3 years ago
The net of an isosceles triangular prism is shown. What is the surface area, in square units, of the triangular prism?
neonofarm [45]

Area of three rectangles

  • 3LB
  • 3(8)(6)
  • 24(6)
  • 144units²

Area of two triangles

  • 1/2(6)(4)
  • 3(4)
  • 12units²

Total

  • 144+12
  • 156units²
5 0
2 years ago
Greta wants to make 5 pounds of a nut mix using peanuts and cashews. Her budget requires the mixture to cost her $6 per pound. P
Vinil7 [7]

Answer:

3 pounds of peanuts and 2 pounds of cashews

Step-by-step explanation:

Let x be the pounds of peanuts and y be the pounds of cashews

Greta wants to make 5 pounds of a nut mix using peanuts and cashews.

So, x+y=5 ----- A

Cost of 1 pound of peanuts = $4

Cost of x pounds of peanuts = 4x

Cost of 1 pound of cashews = $9

Cost of y pounds of cashews = 9y

Her budget requires the mixture to cost her $6 per pound

So, cost of mixture of x pounds of peanuts and y pounds of cashews is 6(x+y)

So, 4x+9y=6(x+y) --- B

Plot A and B

x+y=5 ---Blue

4x+9x=6(x+y) ---Green

Refer the attached figure

Intersection point = (x,y)=(3,2)

Hence she should use 3 pounds of peanuts and 2 pounds of cashews

6 0
3 years ago
Suppose you have already been waiting for one hour for a taxi. what is the probability that one arrives within the next 10 minut
Alona [7]

The probability of one arrives within the next 10 minutes when he already been waiting for one jour for a taxi is,

 

P (X > 70 | X > 60) = P (X > 10) = 1 – P (X ≤ 10) = 1 – {1 – e ^ -((1 / 10) 10)} = e ^ -1

= 0.3679

 

The probability of one arrives within the next 10 minutes when he already been waiting for one hour for a taxi is 0.3679

3 0
3 years ago
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