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Delvig [45]
3 years ago
10

Multiply. (3.5 x 10^-5) (3 x 10-10)

Mathematics
1 answer:
larisa86 [58]3 years ago
6 0
<span>0.0007 is the answer</span>
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X÷2=6<br><br>need help<br><br>Alguem me ajuda<br><br>necesito ayuda​
Ganezh [65]
Divide both sides by 2

X=3
8 0
2 years ago
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PLZ HELP, AND PLZ EXPLAIN
shutvik [7]

Answer:

C

Step-by-step explanation:

To make it easy let's start by organizing our information :

  • AC=12 AND BD=8
  • ABCD is a rhombus
  • K and L are the midpoints of sides AD and CD
  • we notice that the rhombus ABCD is divided into four right triangles

What do you think of when you hear a right triangle ?

  • The pythagorian theorem !

AC and BD  are khown so let's focus on them .

If we concentrated we can notice that AB and BD are cossing each other in the midpoints . why ?

Simply because they are the diagonals of a rhombus .

ow let's apply the pythagorian theorem :

  • (AC/2)² + (BD/2)² = BC²
  • 6²+4²=52
  • BC²= 52⇒\sqrt{52}=BC

Now we khow that : AB=BC=CD=AD=\sqrt{52}

This isn't enough . Let's try to figure out a way to calculate the length of KL  wich is the base of the triangle

  • KL is parallel to AC
  • k is the midpoint of AD and L of DC

I smell something . yes! Thales theorem

  • KL/AC=DL/DC=DK/AD WE4LL TAKE OLY ONE
  • KL/12=\sqrt{52}/2*\sqrt{52}  
  • KL/12=1/2⇒ KL=6

Now we have the length of the base kl

Now the big boss the height :

  • notice that you khow the length of KL
  • BD crosses kl from its midpoint and DL = \sqrt{52} /2

What I want to do is to apply the pythgorian thaorem to khow the lenght of that small part that is not a part of the height of the triangle . I will call it D

  • DL²=(KL/2)²+D²
  • 52/4= 9+ D²
  • D² = 52/4-9 +4 SO D=2

now the height of the trigle is H= BD-D= 8-2=6

NOw the area of the triangle is :

  • A=(KL*H)/2 ⇒ A= (6*6)/2=18

THE ANSWER IS 18 SQ.UN

5 0
3 years ago
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
PolarNik [594]

Answer:

hypotenuse = 25 yards

Step-by-step explanation:

Use pythagorean theorem

c^2 = a^2 + b^2      where c = hypotenuse and  'a' and 'b' are the legs

hyp^2 = 24^2  + 7^2

hyp^2 = 625

hyp = 25 yd

7 0
2 years ago
Question 1: A certain county has 1,000 farms. Corn is grown on 100 of these farms but on none of the others. In order to estimat
Nina [5.8K]

Answer:

Plan II

Step-by-step explanation:

A certain county has 1,000 farms.

Corn is grown on 100 of these farms but on none of the others.

Since corn is grown on only 100 of these farms, the population of interest is the 100 farms on which corn is grown.

Therefore, a better method for estimating the total farm acreage of corn for the county is Plan II.

a) Identify the 100 corn-growing farms.

b) Sample 20 corn-growing farms at random.

c) Estimate the mean acreage of corn for corn-growing farms in a confidence interval.

d) Multiply both ends of the interval by 100 to get an interval estimate of the total.

4 0
2 years ago
Simplify the expression (2^3)^-2
snow_lady [41]

1/64

2^3 = 8

8^-2 = 1/64

5 0
2 years ago
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