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olya-2409 [2.1K]
3 years ago
9

20 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
erastova [34]3 years ago
3 0

Answer:

{ \rm{12300000 = 1.23 \times  {10}^{7} }} \\  \\ { \rm{0.000123 = 1.23 \times  {10}^{ - 4} }} \\  \\ { \rm{12.300 = 1.23 \times 10 {}^{1} }} \\  \\ { \rm{1230000 = 1.23 \times  {10}^{6} }} \\  \\ { \rm{0.00123 = 1.23 \times  {10}^{ - 3} }}

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Unit 7 - Mid Unit Assessment - Grade 8
Stolb23 [73]

Answer:

1000 times

First, we estimated the Sun's width in terms of the Earth's breadth, then the Star's width in terms of the Earth's breadth, and for comparison, we did simple division, which revealed that the Star KW Sagittarii is 1000 times wider than the Sun.

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3 years ago
The period of y= -3cos x/8 is
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Y=7.8com %75 679000 then multiple them wait don't think got it right
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PLEASE HELP SUPER EASY!!!
Effectus [21]

A1. 12 i.e option D

A2. 3n-7 i.e option A

A3. -6n+20 i.e option D

A4. -70 i.e option C

Step-by-step explanation:

aₙ = a₁ + (n - 1) × d  

aₙ = the nᵗʰ term in the sequence

a₁ = the first term in the sequence

d = the common difference between terms

Using the above formula to solve the first part, we have :

  • -8 = a₁ + (2-1) × 5
  • -13 = a₁
  • a₆ = -13 + (6-1) × 5
  • a₆ = 12

For the second part, we have :

  • aₙ = -4 + (n-1)×3
  • aₙ = -4 + 3n -3
  • aₙ = 3n-7

For the third part, we have :

  • a₁=14 ; d=-6
  • aₙ = 14 + (n-1)×(-6)
  • aₙ = -6n + 20

For the fourth part, we have :

  • aₙ = 14 + (15-1)×(-6)
  • aₙ = -70
7 0
3 years ago
Which fraction has the greatest value?<br> 1/15<br> 1/20<br> 1/10
Alecsey [184]
1\10 has the greatest value as it is the smallest number diving one
3 0
3 years ago
Read 2 more answers
Please help! Find the area and the perimeter of the shaded regions below. Give your answer as a completely simplified exact valu
Nadya [2.5K]

Answer:

The \ area \ of \ the \ figure = 4\dfrac{1}{2} \cdot \pi + 18 \ cm^2

Step-by-step explanation:

Given that the figure is made up of portion of a square and a semicircle, we have;

BC ≅ AB = 6 cm

The area of semicircle BC with radius BC/2 = 3 is 1/2×π×r² = 1/2×π×3² = 4.5·π cm²

Triangle ABC = 1/2 × Area of square  from which ABC is cut

The area of triangle ABC = 1/2×Base ×Height = 1/2×AB×BC = 1/2×6×6 = 18 cm²

The area of the figure = The area of semicircle BC + The area of triangle ABC

The area of the figure = 4.5·π cm² + 18 cm² = \dfrac{9 \cdot \pi +36}{2} \ cm^2.

5 0
3 years ago
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