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Taya2010 [7]
3 years ago
14

What is scientific notation 0.0042

Mathematics
2 answers:
ratelena [41]3 years ago
8 0

4.2 x 10^3 is the correct answer

stepan [7]3 years ago
8 0

Hello from MrBillDoesMath!

Answer:

4.2* 10^-3


Discussion:

0.0042 =

42/10000 =

42 * 10^-4  =

4.2* 10^-3


Thank you,

MrB

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3r+(7+8)/(t-3)when r=4, s=3 and t=5
mars1129 [50]

Answer:

19.5

Step-by-step explanation:

3r+(7+8)/(t-3)

3(4)+(15)/(5-3)

12+(15/2)

12+7.5

19.5

6 0
2 years ago
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4 0
3 years ago
If F is conservative, find all potential functions f for F so that F = ∇f. (If F is not conservative, enter NOT CONSERVATIVE. Us
Alenkinab [10]

Answer: some parts of your question is missing below is the missing data

Determine if the given vector field F is conservative or not. F = −6e^y, (−6x + 3z + 9)e^y, 3e^y

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F is conservative

F = -6xe^y + ( 33 + 9 ) e^y + C

Step-by-step explanation:

The Potential functions for F so that F = ∇f.

F = -6xe^y + ( 33 + 9 ) e^y + C

attached below is a detailed solution

5 0
3 years ago
Your cousin has a goat in his backyard, tied with a 4 foot rope. The goat can move in a circular motion the length of the rope.
rosijanka [135]
The stake the rope is tied to is the center of the circle. If the goat pulls the rope as far as it can go and walks around like this he makes a circle and he can eat the grass anywhere within this circle.

(a) Since the area of a circle is given by A= \pi  r^{2} this is the formula we can use to find the area of the yard where the goat can roam/eat/reach.

(b) Since the rope is 4 feet the radius r = 4 and the area is given by 4^{2} \pi =16   \pi ^{2} square feet. That's the exact area. For an approximation you could substitute 3.14 for pi and get 50.24 square feet.

(c)Since the rope is 5 feet the radius r = 4 and the area is given by 5^{2} \pi =25 \pi ^{2} square feet. That's the exact area. For an approximation you could substitute 3.14 for pi and get 78.5 square feet.
6 0
3 years ago
True or false if two angles of a triangle are congruent then the sides opposite those angles are congruent?
Sergeeva-Olga [200]

If two sides of a triangle are <span>congruent </span>, then the angles opposite to these sides are congruent.

 

<span><span>∠P≅∠Q</span><span>∠P≅∠Q</span></span>

Proof:

Let <span>SS</span> be the midpoint of <span><span><span>PQ</span><span>¯¯¯¯¯</span></span><span><span>PQ</span>¯</span></span> .

Join <span>RR</span> and <span>SS</span> .

Since <span>SS</span> is the midpoint of  <span><span><span>PQ</span><span>¯¯¯¯¯</span></span><span><span>PQ</span>¯</span></span> , <span><span><span><span>PS</span><span>¯¯¯¯¯</span></span>≅<span><span>QS</span><span>¯¯¯¯¯</span></span></span><span><span><span>PS</span>¯</span>≅<span><span>QS</span>¯</span></span></span> .

By <span>Reflexive Property </span>,

<span><span><span><span>RS</span><span>¯¯¯¯¯</span></span>≅<span><span>RS</span><span>¯¯¯¯¯</span></span></span><span><span><span>RS</span>¯</span>≅<span><span>RS</span>¯</span></span></span>

It is given that <span><span><span><span>PR</span><span>¯¯¯¯¯</span></span>≅<span><span>RQ</span><span>¯¯¯¯¯</span></span></span><span><span><span>PR</span>¯</span>≅<span><span>RQ</span>¯</span></span></span>

Therefore, by <span>SSS </span>,

<span><span>ΔPRS≅ΔQRS</span><span>ΔPRS≅ΔQRS</span></span>

Since corresponding parts of congruent triangles are congruent,

<span><span>∠P≅∠Q</span><span>∠P≅∠Q</span></span>

The converse of the Isosceles Triangle Theorem is also true.

If two angles of a triangle are congruent, then the sides opposite those angles are congruent.

If <span><span>∠A≅∠B</span><span>∠A≅∠B</span></span> , then <span><span><span><span>AC</span><span>¯¯¯¯¯</span></span>≅<span><span>BC</span><span>¯¯¯¯¯</span></span></span><span><span><span>AC</span>¯</span>≅<span><span>BC</span>¯</span></span></span> .

plz hope thes helps can u plz mark me as branlyist pl sorry i can brely spell :(
4 0
3 years ago
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