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m_a_m_a [10]
3 years ago
5

For which x is f(x)?=-3

Mathematics
2 answers:
nignag [31]3 years ago
7 0
Negative seven should be the answer
musickatia [10]3 years ago
6 0

Answer:

-7

Step-by-step explanation:

f(-3)=-7

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A developer wants to enclose a rectangular grassy lot that borders a city street for parking. if the developer has 256 feet of f
Elanso [62]

Let the lenght perpendicular to street = x

Means lenght two sides will be x and x

Another side of retangle will be = 256 - 2x

Area of rectangle will be= A = x * (256-2x) = 256 x - 2 x^2

For maximum area, dA/dx = 0

d/dx (256 x - 2 x^2) = 0

256 - 4 x = 0

4 x = 256

x = 64 feet

Means one side is 64 feet

Another side will be = 256 - 2 * 64 = 128

Now we have two sides of rectangle 64 and 128

Area = 128 * 64 = 8192 square feet : Answer

Hope it will help :)

7 0
4 years ago
Evaluate the dot product of (7, 5) and (- 5, 4)
melamori03 [73]

Answer:

The dot product of (7,5) and (-5,4) is -15

Step-by-step explanation:

Given

(7,5) and (-5,4)

Required

Determine the dot product

Dot product is calculated using the following formula;

a.b = {a_1b_1+a_2b_2+...+a_nb_n}

Let a = (7,5) and b = (-5,4);

The above formula becomes

a.b = {7*-5+5*4}

a.b = {-35+20}

a.b = {-15}

Hence, the dot product of (7,5) and (-5,4) is -15

5 0
4 years ago
3/5t−4−7/10t=−2 what the value of t
Marysya12 [62]
Hello there.

<span>3/5t−4−7/10t=−2

t=-20</span>
8 0
3 years ago
165. How many moles of sodium will react with water to
Fiesta28 [93]

Answer:

Explanation:

Hello,

In this case, based on the given rewritten reaction:

The stoichiometry leads to the following theoretical moles of oxygen:

As sodium and hydrogen as a 2 to 1 molar relationship.

Step-by-step explanation:

4 0
4 years ago
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How many minutes are there in 12.5 hours?
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Answer:

750 minutes

Step-by-step explanation:

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3 years ago
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