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Keith_Richards [23]
3 years ago
6

What is the value of the expression when x = 4?

Mathematics
1 answer:
Maurinko [17]3 years ago
4 0

Answer:

The correct answer is Option 2. 48

Step-by-step explanation:

The given equation is  3x²  ---(1)

When we substitute the value of x we get the value of the equation.

Here it is given that,

x = 4

Substitute this value in the equation (1) we get,

3x²  = 3*(4)² = 3*16 = 48

Therefore the correct answer is Option 2. 48

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Jeremiah had 200 cat treats and 200 dogs treats and he gave Makayla 120 cat treats and 168 treats all together. How many treats does Jeremiah have left? And how many dog treats does does Makayla have ?
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3 years ago
If the area of a rectangular garden is 45x2−12x square meters, and it has a length of 3x meters, what is its width?
nikitadnepr [17]

Answer:

  (9x -4) meters

Step-by-step explanation:

The relationship between area, length, and width is ...

  area = length × width

Dividing by length gives ...

  width = area/length

Filling in the given expressions, we have ...

  w=\dfrac{45x^2-12x}{3x}=\dfrac{45x^2}{3x}-\dfrac{12x}{3x}=9x-4

The width of the garden is 9x-4 meters.

4 0
3 years ago
Read 2 more answers
A satellite, B, is 17,000 miles from the horizon of Earth. Earth's radius is about 4,000 miles. Find the approximate distance th
Natali [406]

Answer:

  • 13,464 miles

Explanation:

1) You can draw a right triangle where the distance of 17,000 miles from the horizon of Earth is leg, perpendicularto the radius of the Earth, and such radius is the other leg, 4,000 miles.

2) By the construction of the right triangle, the hypotenuse is the sum of the height of the satelite (unknown, x) plus the radius of the Earth (4,000) = x + 4,000.

3) Now, you can use Pythagora's theorem:

  • (x+4,000)² = 4,000² + 17,000²

  • (x + 4,000)² = 305,000,000

  • (x + 4,000) = 17,464       (take only the positive root)

  • x = 17,464 - 4000 = 13,464

Remember to include the units: miles.

Answer: 13,464 miles. 

8 0
3 years ago
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the perimeter of the base of an artifact shaped like rectangular prism is 16 inches the length of the base is 3 times the width
vovangra [49]
Use surface area equation 2ab+2bc+2ac plug the numbers in

4 0
3 years ago
2. The formula below, the legs of the triangle are a and b. The hypotenuse is c.
jonny [76]

Answer:

Maybe True

Step-by-step explanation:

Hence, to find the area of a triangle, we need to know the base (b) and height (h) of it. This formula is applicable to all types of triangles, whether it is scalene, isosceles or equilateral.

<h2><em><u>BRAINILIEST</u></em><em><u> </u></em><em><u>PLEASE</u></em><em><u> </u></em></h2>
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3 years ago
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