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Alenkasestr [34]
4 years ago
6

2.1e-10 in standard form?

Mathematics
2 answers:
just olya [345]4 years ago
5 0
<span>2.1e-10
= 2.1 x 10^-10
= 0.00000000021

hope it helps</span>
Nookie1986 [14]4 years ago
5 0
0.00000000021 is the answer

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The length of a rectangular garden is 5 times its width.
Delvig [45]

Answer:

  • 10 m and 50 m

Step-by-step explanation:

<h3>Given</h3>
  • l = 5w
  • A = 500 m²
<h3>To find</h3>
  • Length and width
<h3>Solution</h3>

Area formula

  • A = lw
  • A= 5w*w= 5w²
  • 5w² = 500
  • w²= 100
  • w = √100
  • w = 10 m

Then

  • l = 5w = 5*10 m = 50 m

3 0
2 years ago
Can somebody explain to me how they got 3^4(x) = 3^3(x+2)? Then explain what happened to the 3 in 3^4 and the 3 in 3^3? Please a
musickatia [10]

Answer:

x=6

Step-by-step explanation:

81^x = 27 ^(x+2)

81 = 3^4    and 27 =3^3  so replace 81 and 27 in the equation

3^4^x = 3^3^(x+2)

When we have a power to a power we can multiply the exponents

a ^b^c = a^(b*c)

3^(4x) = 3^(3*(x+2))

Since the bases are the same, the exponents  have to be the same

a^b = a^c   means b=c

4x = 3(x+2)

Now we can solve for x

Distribute

4x = 3x+6

Subtract 3x from each side

4x-3x = 3x-3x+6

x = 6

3 0
3 years ago
In order for the parallelogram to be a rhombus x=
Eva8 [605]

Answer:

17

Step-by-step explanation:

Properties used:-

All sides of rhombus are equal therefore in the triangles

EQUAL SIDE OPPOSITE TO ANGLES, ANGLES BECOME EQUAL

then we use alternate interior angles

Then we get,

3x-11=x+23

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4 0
3 years ago
What is the value of cosine (StartFraction 4 pi Over 3 EndFraction)? cos(4pi/3)
Dominik [7]
The answer is 1/2.....
8 0
3 years ago
Read 2 more answers
What is m&lt;BCD<br>OA) 80°<br>OB) 90°<br>C) 100°<br>D) 110°​
wlad13 [49]

Answer:

D

Step-by-step explanation:

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ BCD is an exterior angle of the triangle, thus

∠ BCD = 50° + 60 = 110° → D

6 0
3 years ago
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