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lions [1.4K]
3 years ago
7

place parenthesis in the expression ok the left sp that the esperssion simplifies to the expression on the right: -5+5-4a+1=20a

Mathematics
1 answer:
Alex777 [14]3 years ago
7 0
Im so smart ima leave this not aswered because its so easy
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What is the ratio 63:28 as a fraction in simplest form?
Fiesta28 [93]
It would be: 63 / 28 = 9 / 4

So, your answer is 9/4

Hope it helped.
8 0
3 years ago
Two trains on opposite tracks leave the same station at the same
nikdorinn [45]

Answer:

20 minutes( 0.3333 hours) after they leave the station will they be 50 km apart, if the Two trains on opposite tracks leave the same station at the same time.

Step-by-step explanation:

One train travels at an average speed of 80 km/hr and the other travels at an average speed of 70 km/hr.

4 0
2 years ago
Which of these match plz don’t say random ones more then one answer possibly
natali 33 [55]
A and E
Just rearrange where the -5 is
3 0
3 years ago
(gh)^0 I'm very confused can you show me how to solve this
lana [24]

The expression is:

(9d^{10})^{-2}

Simplify the expression:

1. Multiply the exponent outside the parenthesis with every exponent inside the parenthesis,

\begin{gathered} (9d^{10})^{-2}=9^2d^{(-10)\times2} \\ (9d^{10})^{-2}=9^{-2}d^{-20} \end{gathered}

Since, exponents in negative form are express as fraction with 1 as numerator.

\begin{gathered} \mleft(9d^{\mleft\{10\mright\}}\mright)^{\mleft\{-2\mright\}}=9^{-2}d^{\mleft\{-20\mright\}} \\ \mleft(9d^{\mleft\{10\mright\}}\mright)^{\mleft\{-2\mright\}}=\frac{1}{9^2}\times d^{\mleft\{-20\mright\}} \\ \mleft(9d^{\mleft\{10\mright\}}\mright)^{\mleft\{-2\mright\}}=\frac{1}{81}^{}d^{\mleft\{-20\mright\}} \end{gathered}

Answer: 1/81d^(-20)

3 0
1 year ago
Help me please. Don't answer if you will be toxic. ☣
Hunter-Best [27]

15 = 3² +2(7-4)

____

The above expression includes operations of

  • exponentiation
  • subtraction
  • multiplication
  • addition

The exponent is 2.

I know the value of this expression is 15 because

  • I designed the expression to have a value of 15
  • I get a value of 15 when I evaluate the expression
  • A reliable on-line calculator also gets a value of 15 when it evaluates the expression

4 0
3 years ago
Read 2 more answers
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