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GuDViN [60]
4 years ago
6

Find the answers. 1. 8.1 x 10 =

Mathematics
2 answers:
lara [203]4 years ago
5 0
I Did Ah Little Digging Down Deep And The Answer I Came Up With Was 81 .
natta225 [31]4 years ago
3 0

Answer:

81.

Step-by-step explanation:

in order to find 8.1×10, you'd want to move your decimal place one to the right (hence the ONE zero on the end of 10). so, if you wanted to do 8.1×10, it would be 81.

if you wanted to do 8.1×100, it would be 810 because you'd move the decimal place two to the right (because there are two zeroes on the end of 100)

if you wanted to do 8.1×1,000, your answer would be 8,100. moving the decimal place three to the right (hence the three zeroes on the end of 1,000) you'd get 8,100.

Hope this helps! <3

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Determine if ΔABC and ΔFHG are similar. If so, write the similarity statement.
Brrunno [24]
6:1 they are similar
5 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 m less than the diagonal and the width is 5 m less than the diagonal. If the area is 82 m^2, how
nikklg [1K]

I hate rounding.

Let's call the diagonal x.  It's the hypotenuse of the right triangle whose legs are the rectangle sides.

According to the problem we have a length x-4 and a width x-5 and an area

82 = (x-4)(x-5)

82 = x^2 - 9x + 20

0 = x^2 - 9x - 62

That one doesn't seem to factor so we go to the quadratic formula

x = \frac 1 2(9 \pm \sqrt{9^2-4(62)}) = \frac 1 2(9 \pm \sqrt{329})

Only the positive value makes any sense for this problem, so we conclude

x = \frac 1 2(9 \pm \sqrt{329})

That's the exact answer.  Did I mention I hate rounding?  That's about

x = 13.6 meters

Answer: 13.6

----------

It's not clear to me this problem is consistent.  By the Pythagorean Theorem the diagonal satisfies

x^2 = (x-4)^2 + (x-5)^2

which works out to

x=9 \pm 2\sqrt{10}

That's not consistent with the first answer; this problem really has no solution.  Tell your teacher to get better material.

5 0
3 years ago
PLEASE HELP
polet [3.4K]

Answer:

Hope it helps you

thanks

5 0
3 years ago
If (x+5) is a factor of 3x^2+14x+k, what is the value of k?
kherson [118]
If (x+5) is a factor the equation will equal zero when x=-5 so

3(-5^2)+14(-5)+k=0

75-70+k=0

5+k=0

k=-5

7 0
4 years ago
the second of two number is 6 more than 3 times the first. The sum of the two number is 30. Find the two numbers​
pantera1 [17]

Answer:

kinda hard

Step-by-step explanation:

7 0
4 years ago
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