Solve w ^ 2 = - 4 , where w is a real number

so what is really the answer?

Answer:

A=152.32 cm^2

Step-by-step explanation:

A=2(wl+hl+hw)

A=2(6.8*3.4+5.2*3.4+5.2*6.8)

A=2(23.12+17.68+35.36)

A=2(76.16)

A=152.32

Answer:

The first where z = -1.78 and p-value = 0.0375 would be the correct answer

Hope it helps

Using the z-distribution, it is found that the test statistic and the p-value of the test are given as follows:

z = –1.78, P-value = 0.0375.

At the null hypothesis, it is tested if the proportion is of 85%, that is:

[tex]H_0: p = 0.85[/tex]

At the alternative hypothesis, it is tested if it is less than that, hence:

[tex]H_1: p < 0.85[/tex].

The test statistic is given by:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

In which:

In this problem, we have that the parameters are given as follows:

[tex]n = 50, \overline{p} = 0.76, p = 0.85[/tex]

Hence, the test statistic is given by:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

[tex]z = \frac{0.76 - 0.85}{\sqrt{\frac{0.85(0.15)}{50}}}[/tex]

z = -1.78.

Using a z-distribution calculator, considering that we have a left-tailed test, as we are testing if the proportion is less than a value, the p-value is of 0.0375.

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Answer:

x = 65

y = 71

z = 44

Step-by-step explanation:

y = 71 because If two parallel lines are cut by a transversal, then the alternate interior angles formed are congruent

Answer:

Step-by-step explanation:

y = 6X

so this is a direct variation , b/c as X goes up, so does Y

The equation that models the data is y = 6x

An equation contains one or more terms with variables connected by an equal sign.

Example:

2x + 4y = 9 is an equation.

2x = 8 is an equation.

We have,

To determine whether the data in the table represents a direct or inverse variation, we need to check whether the ratio of x to y is constant.

When we divide each y-value by its corresponding x-value, we get the ratios:

6/1 = 6

12/2 = 6

30/5 = 6

60/10 = 6

We see that the ratio of y to x is constant, which means that the data represents a direct variation.

To write an equation to model the data in the table, we can use the formula for direct variation, which is:

y = kx

where k is the constant of variation.

To find k, we can use any of the given data pairs.

For example, we can use the first pair (x = 1, y = 6):

6 = k(1)

Solving for k, we get:

k = 6/1 = 6

Thus,

The equation that models the data is y = 6x

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Answer:

12x8x10=960

Step-by-step explanation:

Answer:

both of the above

Step-by-step explanation:

The correct representation of the graph will be;

''The cost of gas rises, and then doesn't change for while. The cost falls before finishing with a sharp increase.''

Option B is true.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The graph is shown in figure with relation between Time and Cost.

Now,

In the graph;

From the start, The cost of gas is rise with increase in graph, and then in cost no change occur with constant line.

The, the cost falls with falls in graph and then the cost is sharp increase before finishing.

Thus, The correct representation of the graph will be;

''The cost of gas rises, and then doesn't change for while. The cost falls before finishing with a sharp increase.''

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Answer:

Step-by-step explanation:

2miles

The required shortest between the two houses is given as 10 miles. Option B is correct.

In a right-angled triangle, its side, such as the hypotenuse, is perpendicular, and the base is Pythagorean triplets.

Here,
Matthew lives 6 miles east of the school drew lives 8 miles north of the school.

Let's assume, the position of Mathew and drew house create the right angle with the school,
hypotenuse distance between Mather and Drew's house be x,
Applying the Pythagoras theorem,

x = √[8² + 6²]
x = √[100]
x = 10 miles

Thus, the required shortest between the two houses is given as 10 miles. Option B is correct.

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Answer:

El eje horizontal en el plano de coordenadas se llama eje-x. El eje vertical se llama eje-y. El punto en el que los dos ejes se intersectan se llama origen.

Step-by-step explanation:

Answer:

0.4

Step-by-step explanation:

Radius of inner circle = r

Radius of entire circle = r + r + r + r + r = 5r

Probability that an arrow hitting the target will land on inner circle ;

Area of inner circle / area of entire circle

Recall :

Area of circle = πr²

Hence ;

πr² / π(5r)²  = πr² / π25r² = 1 / 25 = 0.4

Answer:

Basically you add all the numbers shown there and divide by how many there are. So you just get the sum and divide that by 11 since there are 11 numbers. Happy to help! (mean)

Step-by-step explanation:

Answer:

c, c, b

Step-by-step explanation:

Answer:

range = 22

Step-by-step explanation:

98-76

Answer:

C. median = 89, mean = 89

range = 22

Step-by-step explanation:

The radicals [tex]\sqrt{180}[/tex]  and [tex]3\sqrt{20}[/tex] are equivalent.

What is radical?

A radical, or root, is the mathematical opposite of an exponent, in the same sense that addition is the opposite of subtraction.

The value of [tex]\sqrt{54}[/tex] is [tex]3\sqrt{6}[/tex] which is not equivalent to [tex]9\sqrt{6}[/tex] .

The value of [tex]\sqrt{180}[/tex] is [tex]6\sqrt{5}[/tex].

The value of [tex]3\sqrt{20}[/tex]  is [tex]6\sqrt{5}[/tex].

The radicals [tex]\sqrt{180}[/tex]  and [tex]3\sqrt{20}[/tex] are equivalent.

Therefore, the correct option is b.

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Answer:212

Step-by-step explanation:

Answer:

It is 278cm

Step-by-step explanation:

Add 220cm and 58cm

Answer:

[tex]16\sqrt{3}\:\mathrm{units^2}[/tex]

Step-by-step explanation:

The area of an equilateral triangle with side length [tex]s[/tex] is equal to [tex]\frac{\sqrt{3}}{4}s^2[/tex]. Since the perimeter is 24 units and there are three equal sides to an equilateral triangle, each side is [tex]24\div 3=8[/tex] units.

Substituting in this value, we get:

[tex]\frac{\sqrt{3}}{4}8^2=\frac{64\sqrt{3}}{4}=\boxed{16\sqrt{3}}[/tex]

y=2x-3 is the answer.

Note that y=2(x+3) is the same as y=2x+6, which has a slope of 2. Any parallel line must also have a slope of 2, so the answer must be either C or D. Since option D is the same line and will have points in common with the original line, the answer is C.

Answer:

1440 it is right because

Step-by-step explanation:

Decagon is a 10-sided polygon.

Formula to find the sum of interior angles of a n-sided polygon is  

=  (n - 2) ⋅ 180°

By using the formula,  sum of the interior angles of the given decagon (10-sided polygon) is  

=  (10 - 2) ⋅ 180°

=  8 ⋅ 180°

=  1440°

Answer:

The answer is indeed 1440.

Step-by-step explanation:

Answer:

Y =8x +1

Step-by-step explanation:

Answer:

x = -13

Step-by-step explanation:

2x + 6 = -20

Subtract 6 on both sides.

2x = -26

Divide by 2 on both sides.

x = -13

Answer:

-13

2x + 6 = -20

2x =  -26

x = -26 / 2

x=-13

As you can see sphere's diameter = to a cube's edge...so the diameter of the sphere is also 12 cm. So its radius is 6 cm.

v= 4/3*πr³

v=4/3*3.14*6³

v=904.32

The volume of the sphere is about 904 cubic centimeters.

Hope this helps!

Answer:

what does that mean I need more information

I need more info to answer the question

Answer:

D) -9.7 and 9.7

E) 2.8 and -2.8

Answer:

48.25

Step-by-step explanation:

When finding an area of a triangle it is area = base times height divided by 2.

AKA a =bh1/2

We can do that for all sides in this equation.

For the bottom we can do:

5*4.3=21.5       21.5/2 = 10.75

For one side we can do:

5*5 = 25           25/2 = 12.5

12.5 = one side, but there are three so,

12.5*3 = 37.5

37.5 + 10.75 = 48.25

Answer:

bro it's blurry

Step-by-step explanation:

why is it so blurry

There man i hope you'll understand ✌