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SCORPION-xisa [38]
3 years ago
15

Trisha knit a total of 8 centimeters of scarf over 4 nights. How many nights will Trisha have to spend knitting in order to knit

a total of 48 centimeters of scarf? Assume the relationship is directly proportional.
Mathematics
2 answers:
tia_tia [17]3 years ago
8 0

Answer: 24 nights in total

Step-by-step explanation: 48 divided by 8=6 and so six sets in total and to get the number of days you times 6x4 and you get 24 days in total. Also to check the answer 4 is half of 8 and 24 is half of 48

Gnom [1K]3 years ago
6 0

Answer: 6

Step-by-step explanation:

You would divide the number by the other number to get the awnser

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user100 [1]

Answer:

-5,3

Step-by-step explanation:

4 0
3 years ago
Task 1:
OleMash [197]

Answer:

maximum height is 4.058 metres

Time in air = 0.033 second

Step-by-step explanation:

Given that the equation height h

h = -212t^2 + 7t + 4

What is the toy's maximum height?

Let us assume that the equation is a perfect parabola

Time t at Maximum height will be

t = -b/2a

Where b = 7 and a = - 212

t = -7/ - 212 ×2

t = 7/ 424 = 0.0165s

Substitute t in the main equation

h = - 212(7/424)^2 + 7(7/424) + 4

h = - 0.05778 + 0.115567 + 4

h = 4.058 metres

Therefore the maximum height is 4.058 metres

How long is the toy in the air?​

The object will go up and return to the ground.

At ground level, h = 0

-212t^2 + 7t + 4 = 0

212t^2 - 7t - 4 = 0

You can factorize the above equation and pick the positive time t since time can't be negative

Or

Since we have assumed that it's a perfect parabola,

Total time in air = (-b/2a) × 2

Time in air = 0.0165 × 2 = 0.033 s

3 0
3 years ago
△QRS is rotated about point P to △Q′R′S′ .
swat32

A rotation is a transformation that preserves figure shape, figure sizes, angles and lengths.

Therefore,

  • option A is false, because rotation preserves sizes;
  • option B is false, because rotation doesn't change the figure size;
  • option C is true, because rotation preserves figure angles;
  • option D is true, because rotation preserves lenghts of segments.

Answer: option C and D.

6 0
3 years ago
Please help and show work if you can​
krok68 [10]

Answer:

7.  x = 5

8. x = 2, y = 6

9. x = 21, y = 39

Step-by-step explanation:

For a parallelogram, the lengths across intersection are equal.

7. For a parallelogram, the lengths across intersection are equal.

So that,

3x = 4x - 5

4x - 3x = 5

 x = 5

8. For a parallelogram, the lengths across intersection are equal.

So that,

2x = 4

x = \frac{4}{2}

x = 2

and

y - 1 = 2y -7

7 - 1 = 2y - y

y = 6

x = 2, y = 6

9. For a parallelogram, opposite angles have equal value.

Thus,

3x = (4x - 21)

3x = 4x - 21

x = 21

and

3y = (y + 78)

3y = y + 78

3y - y = 78

2y = 78

y = \frac{78}{2}

  = 39

y = 39

x = 21, y = 39

4 0
2 years ago
What are the values of a, b, and c in the matrix addition below?
patriot [66]

a =  - 14 \\ c =  - 12 \\ b =  - 9

3 0
3 years ago
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