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3 years ago

Evaluate x=5: 6+(10-x)^2-20

Mathematics

2 answers:

Simora [160]3 years ago

5 0

<span>6 + (10 - x)</span>² <span>- 20
= </span>6 + (10 - 5)² - 20
= 6 + (5)² - 20
= 6 + 25 - 20
= 11 ← answer

miv72 [106K]3 years ago

3 0

6+(10-5)^2-20
6+5^2-20
6+25-20
31-20
11

Final answer:11

Remember, grouping and parantheses first, then exponents, and finally addition and subtraction

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NEED HELP ASAP SHOW WORK AND PLZ EXPLAIN

Rainbow [258]

Answer:

x = 12

Step-by-step explanation:

Given

4(x - 5) = 8x + 4 - 6x ← distribute left side and simplify right side

4x - 20 = 2x + 4 ( subtract 2x from both sides )

2x - 20 = 4 ( add 20 to both sides )

2x = 24 ( divide both sides by 2 )

x = 12

3 0

3 years ago

Given f(x) = x3 + 8, find the value of x when f(x) = 0.

77julia77 [94]

The value of x is -2 when f(x) = 0

Step-by-step explanation:

In any function f(x) = y

x is the input
y is the output
If f(x) = 2 x + 3, then f(a) = b means when you substitute x by a the value of y = b

∵ f(x) = x³ + 8

To find value of x when f(x) = 0, substitute f(x) in the equation by

0 and solve the equation to find the value of x

∵ f(x) = 0

∴ 0 = x³ + 8

- Subtract 8 from both sides

∴ -8 = x³

- Take ∛ for both sides

∵ $\sqrt[3]{x}=x$

∵ $\sqrt[3]{-8}=-2$

∴ x = -2

The value of x is -2 when f(x) = 0

Learn more:

You can learn more about the functions in brainly.com/question/10879401

#LearnwithBrainly

7 0

3 years ago

Decide if the function is an exponential function. If it is, state the initial value and the base. y = - 1.8 ⋅ 6x

Ipatiy [6.2K]

Answer:

It is an exponential function.

Initial value is - 1.8 and the base is 6.

Step-by-step explanation:

The function is given by $y = - 1.8 (6)^{x}$ and it is an exponential function as the general form of an exponential function is $y = a(b)^{x}$ .

Here, if we put x = 0, the function becomes $y = - 1.8 (6)^{0} = - 1.8$ .

Therefore, the initial value of the function is - 1.8.

In the general equation of exponential function $y = a(b)^{x}$ , b is called the base and x is the exponent.

Therefore, in our case the base of the function $y = - 1.8 (6)^{x}$ is 6. (Answer)

8 0

3 years ago

160 dogs,there are 17 trucks each truck can hold 9 dogs.how much trucks you will need to hold 9 dogs in each truck?

antiseptic1488 [7]

Answer:

160-153=7 dogs

you will need 1 more truck to hold 160 dogs

Step-by-step explanation:

1 truck=9 dogs

9x17=153 dogs

160-153=7 dogs

you will need 1 more truck to hold 160 dogs

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4 years ago

Please help this isn't my best subject

VLD [36.1K]

Answer:

152 degrees

Step-by-step explanation:

CF is a straight line, which means it equals 180 degrees. But FXE is an angle of 28 degrees so you subtract 180 from 28 to get 152 degrees.

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3 years ago