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2 years ago

Giving brainliest! Can anyone answer this question for me?

Mathematics

1 answer:

Marysya12 [62]2 years ago

7 0

Answer:

1/2

Step-by-step explanation:

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What is the value of 3⁴

Andru [333]

Answer:

81 ............................

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2 years ago

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What is the the decrease in percentage from 248 to 200

Mazyrski [523]

Answer:

24%

Step-by-step explanation:

48/248*100

=24%

original 248

new. 200

difference 48

6 0

2 years ago

If f(x) =4x2 - 8x - 20 and g(x) = 2x + a, find the value of a so that the y-intercept of the graph of the composite function (fo

amm1812

Answer:

The possible values are a = -2.5 or a = 4.5.

Step-by-step explanation:

Composite function:

The composite function of f(x) and g(x) is given by:

$(f \circ g)(x) = f(g(x))$

In this case:

$f(x) = 4x^2 - 8x - 20$

$g(x) = 2x + a$

$(f \circ g)(x) = f(g(x)) = f(2x + a) = 4(2x + a)^2 - 8(2x + a) - 20 = 4(4x^2 + 4ax + a^2) - 16x - 8a - 20 = 16x^2 + 16ax + 4a^2 - 16x - 8a - 20 = 16x^2 +(16a-16)x + 4a^2 - 8a - 20$

Value of a so that the y-intercept of the graph of the composite function (fog)(x) is (0, 25).

This means that when $x = 0, f(g(x)) = 25$ . So

$4a^2 - 8a - 20 = 25$

$4a^2 - 8a - 45 = 0$

Solving a quadratic equation, by Bhaskara:

$\Delta = (-8)^2 - 4(4)(-45) = 784$

$x_{1} = \frac{-(-8) + \sqrt{784}}{2*(4)} = \frac{36}{8} = 4.5$

$x_{2} = \frac{-(-8) - \sqrt{784}}{2*(4)} = -\frac{20}{8} = -2.5$

The possible values are a = -2.5 or a = 4.5.

5 0

2 years ago

Help please due soon

HACTEHA [7]

Answer:

i think it's 15%

Step-by-step explanation:

6 0

3 years ago

Increase 140 bye 10%

Rus_ich [418]

10% of 140 is 14 so just add 14 to 140

140+14=154.

8 0

2 years ago

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