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2 years ago

PLEASE HELP ASAP!!!!!!

Mathematics

2 answers:

zhannawk [14.2K]2 years ago

7 0

The answer is A to change an exponent from negative to positive, just move it into either the numerator or denominator depending on where it is to begin with.

kvv77 [185]2 years ago

4 0

12 / c^-8 d^2 = 12c^8 / d^2
So your answer is
A) 12c^8 / d^2

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I'll give brainly <3 Please help with these questions <3

Naily [24]

Difference would be 1000x3.0 - 8.8x10000 = -85000
Scientific notation would be 8.5x10^-4

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Ba%5E2%20-2a-b%5E2%3D0%7D%20%5Catop%20%7B2b%2B2ab%3D0%7D%7D%20%5Cright

oksian1 [2.3K]

Given :-

a² - 2a - b² = 0
2b + 2ab = 0

To find :-

Value of a and b .

Solution :-

Taking second equation:-

2b + 2ab = 0
2b ( 1 + a ) = 0
2b = 0 or (1+a) = 0
b = 0 , a = -1

Substitute in first equation :-

a² - 2a - b² = 0

When b = 0 ,

a² - 2a - 0² = 0
a² - a = 0
a( a -1) =0
a = 0 , 1

When a = -1 ,

(-1)² - 2*(-1) - b² = 0
1 + 2 - b² = 0
b² = 3
b = ±√3

Answer :-

a = 0,1 ; b = 0
a = -1 , b = ±√3

8 0

2 years ago

Please help me it's urgent!

Crank

Answer:

y = 2x-5

y=-x+4

Step-by-step explanation:

Just need to solve the:

x+y=4

y-2x=-5

And we have:

x=3

y=1

Then replace x and y into the answer to find the correct one

7 0

2 years ago

A college writing seminar increased its size by 50\PP, percent from the first to the second day. If the total number of students

Jobisdone [24]

Answer: There were 10 students in the class on the first day.

Step-by-step explanation:

Let x be the number of students of the first day.

Given: A college writing seminar increased its size by 50 percent from the first to the second day.

i.e. Number of students on second day = (Number of students on first day)+(50% of Number of students on first day)

= x +50% of x

= x+0.50x

= (1.50)x

=1.50x

Since, it is given that the total number of students in the seminar on the second day was 15.

i.e. $1.50x=15$

$\Rightarrow\ x=\dfrac{15}{1.5}\Rightarrow\ x=\dfrac{150}{15}\\\\\Rightarrow\ x=10$

Hence, there were 10 students in the class on the first day.

7 0

3 years ago

It took Ruby 23 minutes to make meatballs and 29 minutes to make tomato sauce. How much time did it take Ruby to make meatballs

____ [38]

Answer:

52 minutes unless she was multi-tasking then it took her 29 mins to do all

Step-by-step explanation:

52 minutes

6 0

3 years ago

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