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3 years ago

-(7p+6)-2(-1-2p) what is that simplified?

Mathematics

1 answer:

charle [14.2K]3 years ago

4 0

Answer:

-3p-40

Step-by-step explanation:

-(7p+6)-2(-1-2p)

-7p-42+2+4p

-3p-40

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474 ( ) 548 42. - 8 how do I arrive at this answer.<br>

dexar [7]

9514 1404 393

Answer:

(64x^28)/(5y^22)

Step-by-step explanation:

The applicable rules of exponents are ...

(a^b)^c = a^(bc)

(a^b)(a^c) = a^(b+c)

(a^b)/(a^c) = a^(b-c)

First, eliminate the outside exponent on the left factor. Then use the above rules to combine factors with the same base.

$\displaystyle\left(\frac{4x^4}{5y^6}\right)^5\cdot\left(\frac{5^4y^8}{4^2x^{-8}}\right)=\frac{(4^5x^{20})(5^4y^8)}{(5^5y^{30})(4^2x^{-8})}=4^{5-2}5^{4-5}x^{20-(-8)}y^{8-30}\\\\=4^35^{-1}x^{28}y^{-22}=\boxed{\frac{64x^{28}}{5y^{22}}}$

5 0

3 years ago

Betty has a sister named Anne. Betty's sister, Anne, is 3 years younger than twice Betty's age.

chubhunter [2.5K]

The required equation is:

$a = 2b-3$

Step-by-step explanation:

Given

Let a be Anne's Age

and

b be Betty's age

Now we will onvert the given word problem in the form of equation step by step

"twice Betty's age." will be represented by $2b$

Then

"3 years younger than twice Betty's age." will be represented as: $2b-3$

Now

"Betty's sister, Anne, is 3 years younger than twice Betty's age."

$a = 2b-3$

Hence,

The required equation is:

$a = 2b-3$

Keywords: Word problems, linear equation in two variables

Learn more about linear equation in two variables at:

#LearnwithBrainly

4 0

3 years ago

Natalie found a tennis ball outside a tennis court. She picked up the ball and threw it over the 12-foot fence into the court. T

dolphi86 [110]

Answer:

Natalie cannot make it over the fence.

Step-by-step explanation:

After reading the statement, we must demostrate if the following inequation is possible, that is:

$-16\cdot t^{2}+18\cdot t+5 \ge 12$

After some algebraic handling we find this equivalent expression:

$16\cdot t^{2}-18\cdot t +7\le 0$ (1)

The polynomial is factorized by the Quadratic Formula:

$\left(t-0.563-i\,0.348)\cdot (t-0.563+i\,0.348)\le 0$

Since all roots are complex, we conclude that Natalie cannot make it over the fence.

3 0

2 years ago

What is the x-coordinate of the solution to the system?

ozzi

I think it would be easiest to solve for x in this system of equations if you did so by elimination:
Start by finding the least common multiple of 3 and 2 to make the Ys cancel:
4x-6y=-54
-9x+6y=69
_________
-5x=15
x=-3 - answer B

8 0

3 years ago

Any help would be great

Alex_Xolod [135]

Answer:

-1

Step-by-step explanation:

1/3 - 2/5 = x/15

Make denominators equal.

5/15 - 6/15 = x/15

Cancel the denominators.

5 - 6 = x

-1 = x

6 0

3 years ago