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3 years ago

What is the y intercept f(x)=2×3^x

Mathematics

1 answer:

Shalnov [3]3 years ago

5 0

Answer:

Step-by-step explanation: The y-intercept happens when x=0 if you think about it graphically, so plug x=0 into your equation. f(x) means the same thing as y, so

y= 2*3^0

y=2*1

y=2

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Use factoring by difference of squares to solve the equation, x^2 - 81 = 0.

Bas_tet [7]

The answer is B +/- 9 !!

7 0

3 years ago

5. -[-2(x-4) - |1-3|] = -2x18

irina [24]

Solving the expression $-[-2(x-4) - |1-3|] = -2x18$ we get value of x: $x=\frac{3}{19}$

Step-by-step explanation:

We need to solve the equation $-[-2(x-4) - |1-3|] = -2x18$ and find value of x

Solving:

$-[-2(x-4) - |1-3|] = -2x18$

Multiply -2 with terms inside the bracket

$-[-2x+8 - |1-3|] = -2x18$

Solving |1-3| we get |-2|=2

$-[-2x+8 - 2] = -2x18$

$-[-2x+6] = -2x18$

Multiply (-) sign with terms inside the bracket

$+2x-6 = -2x18$

Multiply 2x with 18

$2x-6 = -36x$

Add 36x on both sdides

$2x-6+36x =0$

$38x-6 =0$

Add 6 on both sides:

$38x =6$

Divide both sides by 38

$x=\frac{6}{38}$

Simplifying:

$x=\frac{3}{19}$

So, Solving the expression $-[-2(x-4) - |1-3|] = -2x18$ we get value of x: $x=\frac{3}{19}$

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

3 0

4 years ago

Find the number of sides in a regular polygon with an interior angle of 160 ◦

rjkz [21]

Answer:

a triangle because a friangel always adds up to 180° so. 180 -160 = 20 and both of the other 2angles can be 10°

5 0

3 years ago

Which expression is equivalent to 9x - 4 + 4x + 5x + 19

dexar [7]

Answer:

18x + 15

Step-by-step explanation:

Combine like terms & simplify the given expression:

9x - 4 + 4x + 5x + 19

(9x + 4x + 5x) - 4 + 19

(13x + 5x) + (19 - 4)

(18x) + 15

18x + 15 is your answer.

8 0

4 years ago

There were 8 socks of white, green and blue shuffled in a draw. The probability of selecting a white sock is 1/4. What is the pr

katrin2010 [14]

Answer:

P(select green sock) = 1/8

Step-by-step explanation:

If the probability of selecting a white sock is 1/4, then we know there are 2 white socks: 1/4 has the same value as 2 out of 8.

Similarly, we can determine the number of yellow socks: 5/8 is equivalent to 5 out of 8.

Thus, 2 socks are white; 5 are yellow; and the last (the 8th) sock is green.

P(select green sock) = 1/8

8 0

3 years ago