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kow [346]
3 years ago
15

A store had 3 packs of paper for 4.98. how much it cost if you were to buy 2 packs

Mathematics
2 answers:
nlexa [21]3 years ago
8 0
3.32 is the correct answer. method: 4.98 divided by 3 = 1.66
1.66+1.66= 3.32
Angelina_Jolie [31]3 years ago
3 0
3.32 divide 3 into 4.98 and then take 1.66 +1.66=3.32
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How is the formula for the area of a triangle related to the formula for the area of a parallelogram?
Andreas93 [3]
Area of a triangle is A= 1/2 b x h and Area of a parallelogram is A=b x h. So I would say the area of a triangle is half of the area of a parallelogram. Or a parallelogram is double the area of a triangle.
7 0
4 years ago
An article describes the chemical compositions of certain minerals in the early Archaean mantle. For a certain type of olivine a
Ket [755]

Answer:

The mean is 40.35 and the standard deviation is 0.13.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a certain type of olivine assembly, the silicon dioxide (SiO2) content (in weight percent) in a randomly chosen rock has mean 40.35 and standard deviation 0.4.

Sample of 10:

By the Central Limit Theorem, the mean is 40.35, and the standard deviation is s = \frac{\sigma}{\sqrt{n}} = \frac{0.4}{\sqrt{10}} = 0.13

The mean is 40.35 and the standard deviation is 0.13.

5 0
3 years ago
Is (2, 5) a solution to this system of equations?<br><br> x + 2y = 12<br> 2x + 2y = 14<br> yes or no
ICE Princess25 [194]
Yes (2,5) is a solution to the system of equation

2+2 (5)=12
2+10=12
12=12


2(2)+2(5)=14
4+10=14
14=14
5 0
4 years ago
What multiplies to 14 but adds to negative 4?
Doss [256]
Xy  14
x + y = -4

     x + y = -4
x - x + y = -x - 4
           y = -x - 4

                                                   xy = 14
                                          x(-x - 4) = 14
                                      x(-x) - x(4) = 14
                                           -x² - 4x = 14
                                    -x² - 4x - 14 = 0
                       -1(x²) - 1(4x) - 1(14) = 0
                              -1(x² + 4x + 14) = 0
                                          -1            -1
                                    x² + 4x + 14 = 0
                                    x = -(4) ± √((4)² - 4(1)(14))
                                                         2(1)
                                    x = -4 ± √(16 - 56)
                                                    2
                                    x = -4 ± √(-40)
                                                  2
                                    x = -4 ± 2i√(10)
                                                 2
                                    x = -2 ± i√(10)

                  x + y = -4
   -2 ± i√(10) + y = -4
- (-2 ± i√(10))     - (-2 ± i√(10))
                       y = -2 ± i√(10)
                 (x, y) = (-2 ± √(10), -2 ± √(10))

The two numbers that multiply to 14 and add up to -4 are -2 ± i√(10).
8 0
3 years ago
Heelellelelllllllllllllllllllp meeeeeeeeee
zmey [24]

Answer:

Fewer

Step-by-step explanation:

6 0
3 years ago
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