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3 years ago

Can somebody help me please

Mathematics

2 answers:

White raven [17]3 years ago

5 0

The answer is B b 9.00

Helen [10]3 years ago

4 0

The answer is B) 9.00 because if there is 0.08 tax on every dollar, the tax on 9.00 would be 0.72.

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What is the value of 9 - [42 - (3 + 2)].

Vlada [557]

9 - [42 - (3 + 2)]

Parentheses first:

9-[42-5]

Brackets next:

9- 37

Now subtract to get -28

8 0

3 years ago

Which number sentence shows that the sum of a number and its opposite is 0?

Kazeer [188]

Answer:

A. −4 + 4 = 0

Step-by-step explanation:

-4 + 4 = 0

4 - 4 = 0

So option A will be the answer

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3 years ago

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Which of the following is not a fraction equivalent to 3/4 ?

Romashka-Z-Leto [24]

B. 12/18
Upon simplifying this fraction (taking a 3 out of the numerator and denominator), you end with 4/6

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3 years ago

Write the equation of a circle with a center at (-1,2) and a radius of 7

Sever21 [200]

Answer:

$(x+1)^2+(y-2)^2=49$

Step-by-step explanation:

The standard form for the equation of a circle is $(x-h)^2+(y-k)^2=r^2$ where r is the radius, and the center is (h, k).

(h, k) = (-1, 2), r = 7

$(x-(-1))^2+(y-2)^2=7^2\\\\(x+1)^2+(y-2)^2=49$

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3 years ago

Let f(x) = -2x + 7 and g(x) = -6x + 3. Find fxg and state its domain.

marissa [1.9K]

Option D: $(f\times g)(x)=12 x^{2}-48 x+21$ ; all real numbers.

Explanation:

Given that the functions are $f(x)=-2 x+7$ and $g(x)=-6 x+3$

We need to determine the value of $(f\times g)(x)$ and its domain.

The value of $(f\times g)(x)$ :

The value of $(f\times g)(x)$ can be determined by multiplying the two functions.

Thus, we have,

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

$=(-2x+7)(-6x+3)$

$=12x^2-6x-42x+21$

$(f\times g)(x)=12 x^{2}-48 x+21$

Thus, the value of $(f\times g)(x)$ is $(f\times g)(x)=12 x^{2}-48 x+21$

Domain:

We need to determine the domain of the function $(f\times g)(x)$

The domain of the function is the set of all independent x - values for which the function is real and well defined.

Thus, the function $(f\times g)(x)=12 x^{2}-48 x+21$ has no undefined constraints, the function is well defined for all real numbers.

Hence, Option D is the correct answer.

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3 years ago

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