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3 years ago

3^8•3^-9 can you please help no work needed

Mathematics

2 answers:

netineya [11]3 years ago

5 0

3^8 = 6561
3^9 = 19683
6581 x 19683 = 129533823
quite a big number

Naddik [55]3 years ago

4 0

The answer to your equation is either 1/3 or 0.3333333

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Solve: -14/7 + -6 + 5(-2)

mestny [16]

Answer:

-18

Step-by-step explanation:

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6 0

3 years ago

Find f(-9) when f(x) = |x|- 6.

san4es73 [151]

Answer: f(x) = 3

Step-by-step explanation:

f(x) = |-9| - 6

f(x) = 9 - 6

f(x) = 3

6 0

2 years ago

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Kevin and Randy Muise have a jar containing 82 coins, all of which are either quarters or nickels. The total value of the coins

mezya [45]

Answer: The jar contains 40 quarters and 42 nickels.

Step-by-step explanation:

The worth of a quarter is 25 cents. Converting to dollars, it becomes

25/100 = $0.25

The worth of a nickel is 5 cents. Converting to dollars, it becomes

5/100 = $0.05

Let x represent the number of quarters that they have in the jar.

Let y represent the number of nickels that they have in the jar.

Kevin and Randy Muise have a jar containing 82 coins, all of which are either quarters or nickels. This means that

x + y = 82

The total value of the coins in the jar is $12.10. This means that

0.25x + 0.05y = 12.1 - - - - - - - - - - - 1

Substituting x = 82 - y into equation 1, it becomes

0.25(82 - y) + 0.05y = 12.1

20.5 - 0.25y + 0.05y = 12.1

- 0.25y + 0.05y = 12.1 - 20.5

- 0.2y = - 8.4

y = - 8.4/ - 0.2

y = 42

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7 0

3 years ago

Write an equation for L in point slope form L is parallel to y=5x. points (1,-1)

mojhsa [17]

Answer:

Step-by-step explanation:

The slope-intercept form:

$y=mx+b$

m - slope

b - y-intercept

Parallel lines have the same slope.

We have y = 5x → m = 5.

The point-slope form:

$y-y_1=m(x-x_1)$

We have the slope m = 5 and the point (1, -1). Substitute:

$y-(-1)=5(x-1)\\\\y+1=5(x-1)$

6 0

3 years ago

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Factoring by grouping x^2 + 4y + 2x + 2xy pls explain with work too!!!

Gennadij [26K]

${x}^{2} + 4y + 2x + 2xy$

We can factorise this expression by grouping. First let us arrange it in this way

$= {x}^{2} + 2xy + 2x + 4y$

Let us bracket them like this:

$= ( {x}^{2} + 2xy) + (2x+ 4y)$

In the first bracket portion, take x as common and in the second expression, take 2 as common.

$= x(x + 2y) + 2(x + 2y) \\ = (x + 2)(x + 2y)$

Answer:

$(x + 2)(x + 2y)$

Hope you could understand.

If you have any query, feel free to ask.

7 0

2 years ago

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