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3 years ago

7

Willis bought a gallon of paint. He painted a wall that is 9 ft high and 10 ft wide. Then he used the rest of the paint to paint

46 square feet in the hall. How many square feet did the gallon of paint cover?

1 answer:

Tamiku [17]3 years ago

6 0

The wall that is 9 ft by 10 ft is 90 square feet then add 46 square feet from the hall
90 + 46 = 136

The answer is 136 square feet

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Consider the functions f and g defined by \[f(x) = \sqrt{\dfrac{x+1}{x-1}}\qquad\qquad\text{and}\qquad\qquad g(x) = \dfrac{\sqrt

tino4ka555 [31]

Answer:

The given functions are not same because the domain of both functions are different.

Step-by-step explanation:

The given functions are

$f(x)= \sqrt{\dfrac{x+1}{x-1}}$

$g(x) = \dfrac{\sqrt{x+1}}{\sqrt{x-1}}$

First find the domain of both functions. Radicand can not be negative.

Domain of f(x):

$\dfrac{x+1}{x-1}>0$

This is possible if both numerator or denominator are either positive or negative.

Case 1: Both numerator or denominator are positive.

$x+1\geq 0\Rightarrow x\geq -1$

$x-1\geq 0\Rightarrow x\geq 1$

So, the function is defined for x≥1.

Case 2: Both numerator or denominator are negative.

$x+1\leq 0\Rightarrow x\leq -1$

$x-1\leq 0\Rightarrow x\leq 1$

So, the function is defined for x≤-1.

From case 1 and 2 the domain of the function f(x) is (-∞,-1]∪[1,∞).

Domain of g(x):

$x+1\geq 0\Rightarrow x\geq -1$

$x-1\geq 0\Rightarrow x\geq 1$

So, the function is defined for x≥1.

So, domain of g(x) is [1,∞).

Therefore, the given functions are not same because the domain of both functions are different.

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3 years ago

Which values of x and y would make the following expression represent a real number? (4 + 5i)(x + yi) x = 4, y = 5 x = –4, y = 0

Svetllana [295]

Answer:It’s C

Step-by-step explanation: Edge 2020

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2 years ago

Read 2 more answers

Which expression is equivalent?

SOVA2 [1]

Are those all the options ?

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2 years ago

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Alex_Xolod [135]

Answer:

Solving for x. Want to solve for y instead?

1 Factor out the common term 44.

4(7x+8y)=884(7x+8y)=88

2 Divide both sides by 44.

7x+8y=\frac{88}{4}7x+8y=

4

88

3 Simplify \frac{88}{4}

4

88

to 2222.

7x+8y=227x+8y=22

5 0

3 years ago

(x-13.4)^2+(y+2.6)^2=100

oee [108]

Answer:radius =10 units

Step-by-step explanation:

Given

Equation of circle is given by

$(x-13.4)^2+(y+2.6)^2=100\quad \ldots(i)$

Now general equation of circle with center $(h,k)$ with radius $r$ is given by

$(x-h)^2+(y-k)^2=r^2\quad \ldots(ii)$

Comparing $(i)$ and $(ii)$ we get

$h=13.4$

$k=-2.6$

$r=10$

Thus center is $(13.4,-2.6)$

and radius $r =10\ units$

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3 years ago