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4 years ago

Help me find the value

Mathematics

2 answers:

Sati [7]4 years ago

7 0

You can double check this with a calculator if you'd like to.

1. 13+6=19 13-6=7

Natalija [7]4 years ago

4 0

$19 - 7 = 12$

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PLEASE HELP MEEE I'm failing and I need to pass:(

Dahasolnce [82]

Answer:

girl/boy use photomath if ur failing or just use these.

Step-by-step explanation:

11. 5x^2-6x-12

12. 2x(4y+5x)

13.3y^2+16xy

if you need the rest use photomath I am sure it will come to the same answers I got.

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3 years ago

Mr. Miranda borrowed $8,800 for 12 months at simple interest to pay for a new swimming pool. If Mr. Miranda paid the bank a tota

kaheart [24]

The answer would be b, or 1.4%.

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3 years ago

A pyramid has a surface area of 539 ft.² what is the surface area of a similar pyramid that is smaller by a scale Factor of 1/7

Nataly [62]

Answer:

77 ft²

Step-by-step explanation:

Given that:

Surface Area of larger pyramid = 539 ft²

Scale factor of the smaller pyramid = 1/7

Tbe surface area of the smaller pyramid will be :

Scale factor * surface area

1/7 * 539ft²

= 539 ft² / 7

= 77 ft²

5 0

3 years ago

Find the probability that event A will appear at least three times in four independent tests if the probability of occurrence of

polet [3.4K]

This kind of problems are solved using Bernoulli's distribution. Everytime you have a win/lose scenario, and you know the probability $p$ of winning, and you want $k$ successes over $n$ trials, you have the following probability:

$\displaystyle P(k\text{ successes over }n\text{ trials}) = \binom{n}{k}p^k(1-p)^{n-k}$

You want the probability of having at least three successes, i.e. you are interested in the cases k=3 and k=4. The corresponding probabilities are

$\displaystyle P(3 \text{ successes}) = \binom{4}{3}0.6^3 \cdot 0.4 = 4\cdot 0.216 \cdot 0.4 = 0.3456$

$\displaystyle P(4 \text{ successes}) = \binom{4}{4}0.6^4 = 0.1296$

So, the total probability is $0.3456+0.1296 = 0.4752$

5 0

4 years ago

Question 1 Find the equation for the line that passes through the points (2, 2) and (4, 6). Give your answer in point- slope for

Temka [501]

Answer:

$y - 2 = 2(x - 2)$

Step-by-step explanation:

Equation of a line:

The equation of a line that passes through point $(x_0,y_0)$ , in point-slope form is given by:

$y - y_0 = m(x - x_0)$

In which m is the slope.

Finding the slope:

To find the slope of a line, we need a pair of points. The slope is given by the change in y of these points divided by the change in x.

In this question:

Points (2,2) and (4,6).

Change in y: 6 - 2 = 4

Change in x: 4 - 2 = 2

Slope: $m = \frac{4}{2} = 2$

$y - y_0 = 2(x - x_0)$

I can consider any of these two points $(x_0,y_0)$ , i will use (2,2). So

$y - 2 = 2(x - 2)$

8 0

3 years ago