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kolezko [41]
3 years ago
6

What is 10^-7 equal to?

Mathematics
1 answer:
madreJ [45]3 years ago
6 0
1/10000000 =)))))))))))))))))))))))
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Which statement about the following equation is true?
spayn [35]

The given expression is

3x^2 -8x +5 = 5x^2

We have to find the discriminant first . And for that, first we need to move whole terms of the left side to right side, that is

5x^2 -3x^2 +8x -5=0

2x^2+ 8x -5 =0

The formula of discriminant is

D =b^2 -4ac

Substituting the values of a,b and c, we will get

D = 8^2 -4(2)(-5)=64+40 = 104

And since the discriminant is greater than 0, or it is positive so we have two real roots.

Therefore the correct option is B .

7 0
3 years ago
Read 2 more answers
NEED HELP ASAP! <br><br> What is the value of x? <br><br><br><br> x =
rjkz [21]

The Intersecting Secant Theorem says

EC × ED = EB × EA

(x+4)(x+4+1) = (x+1)(x+1+11)

(x+4)(x+5)=(x+1)(x+12)

x^2 + 9x + 20 = x^2 + 13 x + 12

8 = 4x

x = 2

Check:

6(7)=42

3(14)=42, good

Answer: 2

7 0
3 years ago
Which of the following is a correct conversion of 50 kg
wariber [46]

Answer:

c. 50kg = 50,000g

Step-by-step explanation:

We have to solve these following rule of three to see which of the following is a correct conversion of 50kg.

a)

Each kg has 1000g

So

1kg - 1000g

50kg - xg

x = 50*1000

x = 50,000g

Conversion a) is wrong

b)

Each kg has 1000000mg

So

1kg - 1000000g

50kg - x mg

x = 50*1000000

x = 50,000,000 mg

Conversion b) is wrong

c)

In a), we have already converted 50kg to g. We have verified that 50kg = 50,000g. So c. is correct

d)

In b), we have already converrted 50kg to mg. We have verified that 50kg = 50,000,000g. So d. is wrong

4 0
3 years ago
How to solve long division by using long division 711.9 divided by 8.4
harkovskaia [24]
Multiply both 711.9 and 8.4 by 10 which will remove the decimal point. 
and make the calculation much more easier
 the required answer would be 84.75

5 0
3 years ago
How do i solve this?
Kryger [21]
The answer is -.0028571429
1/5a+1=3/10
-1 -1
1/5a=-.7. -.7 as a fraction is -7/10
1/5a divide -7/10
= -.0028571429

5 0
3 years ago
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