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Alex
2 years ago
7

What is the value of 3x^2 + 5x + 25, when x = 3 (3x^2 means 3x squared)

Mathematics
1 answer:
pentagon [3]2 years ago
8 0
I got 67 but I can guarantee it’s right
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3. Determine which of the following variables are qualitative and which are quantitative variables. Explain your
Tanya [424]

Answer:

Quantitative Variables. As discussed in the section on variables in Chapter 1, quantitative variables are variables measured on a numeric scale. Height, weight, response time, subjective rating of pain, temperature, and score on an exam are all examples of quantitative variables

A is correct

4 0
1 year ago
Evaluate<br> 4(x+5)(2+1)<br> (2+3)(2-3)<br> for x = 5.
zaharov [31]

Answer:

-600

Step-by-step explanation:

4 x 10 x 3 x 5 x -1

40 x 15 x -1

600 x -1 = -600

7 0
2 years ago
A straight line has equation 3y-3x=4. Write down the equation of another straight line parallel to it
Sophie [7]
Y = 3x + 4/3
............
8 0
3 years ago
In the image, point A is the center of the circle. Which two line segments must be equal in length?
alex41 [277]
The answer is C (EF and HI)

This is because both lines pass through the centre A, meaning both are diameters. Hence, they are equal in length.
6 0
3 years ago
Frank purchased a new ice box having 2kg capacity. He wants it to be full with ice cubes. He measured the ice cubes to be 3.5 cm
salantis [7]

Answer:

Frank can put 5 cubes in the box.

Step-by-step explanation:

Formula:

Mass = Volume × density.

1 cubic centimetre = 0.001 liter= 1 millilitre

Given that,

Frank purchase a new ice box having 2 kg capacity.

So,the mass of the cubes is 2 kg.

Each ice cubes measured 3.5 cm by 3.5 cm by 3.5 cm.

The volume of a cube is = Side ^3

The volume of a each ice cubes is =3.5^3 cm³

                                                        = 42.875 ml

The ice cubes have a density of 0.914 g/ml

The mass of each cubes are

=volume of each ice cubes × density

=42.875 ml ×0.914 g/ml

=39.18775 gram.

Let x number of ice cubes he can put in the box.

The mass of x cubes is = 39.18775x grams.

2 kg= 2,000 gram [ since 1 kg= 1000 gram]

According to the problem,

39.18775x=2,000

\Rightarrow x=\frac{2000}{39.18775}

\Rightarrow x\approx 51

Frank can put 5 cubes in the box.

5 0
3 years ago
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