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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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How many minutes did it take him to cover 1 mile? 5 minutes.
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This is a middle school question Solve for x. 1.2(x - 4.4 ) + 7 < 16 plssss hurry
Tatiana [17]

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Step-by-step explanation:

8 0
3 years ago
Given: ∆ABC, AC = 12,<br> AB = BC = 10<br> Find: m∠A, m∠C, m∠B
4vir4ik [10]

Answer:

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Since the sum of angles of a triangle is 180°, ∠B is the supplement of twice this angle, so is about 73.74°.

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The mnemonic SOH CAH TOA reminds you of the relation between the adjacent side, hypotenuse, and trig function of an angle:

  Cos = Adjacent/Hypotenuse

If the altitude from B bisects AC at X, triangle AXB is a right triangle with side AX adjacent to the angle A, and side AB as the hypotenuse. AX is half of AC, so has length 12/2 = 6, telling you the cosine of angle A is AX/AB = 6/10.

A diagram does not have to be sophisticated to be useful.

3 0
3 years ago
Prove that if AC=DF and AB=DE then BC=EF
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In triangle ABC and DEF
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PLEASE HELP
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3 years ago
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