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denpristay [2]
3 years ago
12

What value of x is in the solution set of 3(x – 4) ≥ 5x 2?

Mathematics
2 answers:
Komok [63]3 years ago
7 0

Answer:

C.

Step-by-step explanation:

Andrej [43]3 years ago
5 0
Hope there are 

3(x-4) >= 5x^2 or this 2 from the end what mean ?

3x-12 >=5x^2

0>=5xˇ2 -3x +12 

5x^2 -3x +12 =0

D = 9 -240 = -150 so what mean that this equation has not real solutions 
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Find the product.
tankabanditka [31]

the answer would be c

8 0
3 years ago
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Santino bought a book for $23.54. The price of the book was $22. What was the sales-tax rate?
Vika [28.1K]

We first find value of tax in dollars.

The difference between the two prices  is: 23. 54 - 22 = 1.54

Therefore the sales tax in dollars is 1.54

The tax % will be  (amount of tax / original cost price ) × 100

(1.54 / 22) × 100 → (0.07) × 100 =  7

So the tax rate is 7%

We can double check the answer.

7 % of 22  → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54

6 0
3 years ago
Need help answering this question!!!!
Y_Kistochka [10]
For this case we use the following formula
Area of Sector = Area * radians of sector / 2 * pi radians
Where,
Area: it is the area of the complete circle.
We have then:
Area = pi * r ^ 2
Area = pi * (6) ^ 2
Area = 36pi
Substituting values:
5pi = 36pi * radians of sector / 2 * pi
Clearing:
radians of sector = ((5pi) * (2pi)) / (36pi)
radians of sector = (10pi ^ 2) / (36pi)
radians of sector = (10pi) / (36)
radians of sector = (10/36) pi
radians of sector = (5/18) pi
in degrees:
(5/18) pi * (180 / pi) = 50 degrees
Answer:
The measure of the central angle is:
50 degrees
6 0
3 years ago
the volume of a storage tub shaped like a rectangular prism is 24 ft cubed. The height of the top is 3 ft the width is W feet in
kondor19780726 [428]
<h2>Answer:</h2>

\boxed{W=2ft}

<h2>Step-by-step explanation:</h2>

A prism is a solid object having two identical bases, hence the same cross section along the length. Prism are called after the name of their base. On the other hand, a rectangular prism is a solid whose base is a rectangle.  Multiplying the three dimensions of a rectangular prism: length, width and height, gives us the volume of a prism:

V=L\times W\times H

From the statement of the problem we know:

V=24ft^3 \\ \\ H=3ft \\ \\ W=W \\ \\ L=W+2

So:

24=(W+2)(W)(3) \\ \\ 3W(W+2)=24 \\ \\ 3W^2+6W-24=0 \\ \\ From \ the \ Quadratic \ Formula: \\ \\ W_{12}=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ W_{12}=\frac{-6 \pm \sqrt{6^2-4(3)(-24)}}{2(3)} \\ \\ W_{1}=2 \\ \\ W_{2}=-4

Since we can't have negative distance, the only valid option is \boxed{W=2ft}

3 0
3 years ago
Choose all that are correct.
anastassius [24]

Answer:

Step-by-step explanation:

A ladder 5 meters long leans against a wall. The top of the ladder is 4 meters above the ground. The

ladder makes an approximate angle of 53° with the ground. This will not be correct because in the process of calculating the angle , we have

tanФ = 10/6.2

= 1.6129

Ф = tan^{-1} 1.6129

= 58.20

And it was not mentioned in the statement that the angle was approximated.

2. A ladder 5 meters long leans against a wall. The top of the ladder is 4 meters above the ground. The

ladder makes an approximate angle of 53° with the ground. This is correct , because the calculation will give an approximate answer of 53

3. A ladder 6 meters long leans against a building. The ladder makes an angle of 60' with the ground. The

ladder reaches approximately 5.2 meters up the wall. This is also correct because the calculation will give an approximate answer of 5.2

6 0
3 years ago
Read 2 more answers
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