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slamgirl [31]
3 years ago
5

Help! i’ll mark the right one as brainliest :)!

Mathematics
2 answers:
sineoko [7]3 years ago
7 0

Answer:

4a. 4 / 9

4b. 1 / 81

4c. 1

4d. 1024

4e. 1 / 25

4f. 64

Step-by-step explanation:

4a. (2/3)^2 = (2^2 / 3^2) = 4/9

4b. 3^-4 = 1 / 3^4 = 1/81

4c. 4^0 = 1

4d. 4^2 x 4^3 = 4^5 = 1024

4e. 5^2 / 5^4 = 1 / 5^2 = 1/25

4f. (2^2)^3 = 2^6 = 64

Hopefully this helps!

MariettaO [177]3 years ago
4 0

Answer:

I’ll tell you how to solve these so you can do it yourself easily. If you still don’t understand, tell me and I’ll help out more :)

The exponent—small number in the top corner of another number—means the number of times you multiply the number by itself.

Example:

3²

I have to multiply 3 by 3 twice, therefore I do 3x3 and get 9. 3² = 9!

The · is a multiplication sign and the parenthesis indicate you multiply as well.

I’ll do 4a for you:

I see the exponent is 2, so I have to write:

2/3 · 2/3

I solve that by multiplying the numerators (2x2) and the denominators (3x3).

2/3 · 2/3 = 4/9.

The answer is 4/9.

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Karen's city took a survey about a plan for a new park. Of the people surveyed, 380 liked the plan for the park and 120 did not.
Law Incorporation [45]

Answer:

76

Step-by-step explanation:

Survey response

Those who liked the proposed plan=380 persons

Those who didn't like the proposed plan=120 persons

We assume that the these are the only people who participated, with those who never took sides being zero

Total number of people surveyed=380 persons+120 persons=500 persons

Percentage of those who liked =\frac {380}{500}*100%=76%

Therefore, the percentage that liked the plan is 76%

6 0
3 years ago
If f(x) = 5x + 40, what is f(x) when x = -5?<br> 0-8<br> 0.7<br> O 15
Over [174]

Answer:

15

Step-by-step explanation:

f(x) = 5x + 40

…………………………

when x = -5

f(-5) = 5(-5) + 40

      = -25 + 40

      = 40 - 25

      = 15

4 0
2 years ago
How can you write the equation for a linear function if you know only two ordered pairs for the function?
dedylja [7]

Answer:

See below

Step-by-step explanation:

We first have to understand the parts of a y=mx+b equation

y=mx+b

m: Is the slope

b: Is the y-intercept

x: is the x part of (x,y)

y: is the y part of(x,y)

So...

if we use an example ordered pair like (1,3)

and a slope of 2

We can plug everything into y=mx+b to get

1=2*3+b which simplifies to  b= -5

Now, you can use this concept to fill in the blanks below:  

Use the two ordered pairs to find the slope, (m).

Then substitute the slope, and (one set of ordered pairs) into y=mx+b to solve for (b).

6 0
2 years ago
Damon has five dimes and some nickels in his pocket, worth of a total of $1.20. To find the number of nickels Damon has a, stude
Agata [3.3K]
The answer to the equation should be in cents whereas it is in dollars which would be incorrect 
6 0
3 years ago
What is the answer for 7÷ 4/5
Strike441 [17]

Answer:

7 ÷ 4/5 is 8.75 as a decimal or 8 3/4 as a fraction

7 0
3 years ago
Read 2 more answers
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