If you have 5 questions and get an 80% how many questions did you get wrong?

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Explanation:

As the diagram shows, we have a triangular face with a base of b = 18 and height of h = 13. The area of this triangular face is:

A = 0.5*b*h

A = 0.5*18*13

A = 117 square cm or cm^2

This represents the area of one face, but there are 4 identical copies of this triangular face assuming this tetrahedron is a regular polyhedron. So we have a total surface area of 4*117 = 468 cm^2 which points us to choice B

This is the amount of paint you'll need to cover the outer surface of the pyramid, or you can think of it as the amount of wrapping paper needed. This assumes there are no gaps or overlaps.

Answer:

the answer is ..........

c: 24^21

Answer:

297

Step-by-step explanation:

Since we have to make 9 as the whole, and 33 is the denominator to make 9, we need to multiply 9*33=297.

This makes no sense if you hear it. But trust me it is the right answer i think.

Answer:

x  = 4

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

19=4x+3

-4x=3-19

-4x/-4= -16/-4

x=4

Answer:

Step-by-step explanation:

Answer:

Hypotenuse is 13 ft.

Step-by-step explanation:

A=(1/2)bh

30=(1/2)(5)(h)

30=2.5h

h=12  so ZY = 12ft

Then

[tex]a^{2} +b^{2} =c^{2} \\5^{2} +12^{2} =c^{2} \\25+144=c^{2} \\169=c^{2}\\13=c[/tex]

Answer:

x = 14.7

Step-by-step explanation:

law of sines:

sin 20°/7 = sin 46°/x

x ·sin(20°) = 7 ·sin(46°)

x = 7 ·sin(46°) / sin(20°)

x = 14.722

Answer:

x = 11 or x = -1

Step-by-step explanation:

(x-5)^2 = 36

(x-5) = 6 or (x-5)= -6

then x = 11 or x = -1

Answer:

Step 2

Step-by-step explanation:

Answer:You get 21 Square inches i believe

Step-by-step explanation:

Answer:20

Step-by-step explanation:

Answer:

equilateral

Step-by-step explanation:

A shape is equilateral if all the sides are the same length. In geometry class, people learn about many shapes, such as triangles and squares. A square is equilateral, because all of its sides are the same length. ... The word equal should help you remember what equilateral means.

Answer:

An isosceles triangle has 2 sides of equal length . The dashes on the lines show they are equal in length. The angles at the base of the equal sides are equal.An equailateral triangle has 3 sides of equal length.

Answer:

The slope is -1/2

Step-by-step explanation:

slope is found by putting the rise over run, which is -2/4 or -1/2

Answer:

p/q=0.719

p/q =719/1000

That's your answer

Answer:

4

Step-by-step explanation:

[tex]22[/tex] ✅

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]

[tex]2\times(7 + 4) \\ = 2 \times 11 \\ = 22[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]

Answer: [tex]0.791\leq p\leq0.909[/tex]

Step-by-step explanation:

The confidence interval for the population proportion is given by:-

[tex]\hat{p}\pm z^*\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}[/tex], where [tex]\hat{p}[/tex]= sample proportion, n =sample space , z* = critical z-value.

As per given, we have

[tex]n = 247[/tex]

[tex]\hat{p}=0.85[/tex]

Critical value for 99.9% confidence = 2.576

The required confidence interval will be:

[tex]0.85-2.576\sqrt{\frac{0.85\times0.15}{247}}\leq p\leq 0.85+2.576\sqrt{\frac{0.85\times0.15}{247}}\\\\\Rightarrow\ 0.85-(0.058526)\leq p \leq0.85+(0.058526)\\\\\Rightarrow\ 0.791474\leq p\leq0.908526\approx0.791\leq p\leq0.909[/tex]

The required confidence interval: [tex]0.791\leq p\leq0.909[/tex]

Answer:

13%

Step-by-step explanation:

Its out of 100 people so:

47+33+7 = 87% own a pet

100-87=13%

Answer: Dime

Step-by-step explanation: A half-dollar coin is 50 cents. A quarter is worth 25 cents.

50 + 25 = 75 cents.

75 + 10 = 85 cents.

A half-dollar + a quarter + a dime = 85 cents.

I hope this helps!

Answer:

B. (4x^2 + 3)(x+2)

Answer:  394.6 m^3

Step-by-step explanation:

-

Answer:

The answer is 132175.2 cubic centimeters or 1.3 times 10^5 cubic centimeters in scientific notation.

Step-by-step explanation:

To solve for the volume of the sphere, start by using the formula for the volume of a sphere, which is V= [tex]\frac{4}{3}[/tex][tex]\pi[/tex][tex]r^{3}[/tex].

Next, plug in the information given from the question into the formula. The formula will then look like V= [tex]\frac{4}{3}[/tex]([tex]\pi[/tex])([tex]31.6^{3}[/tex]).

Then, simplify and solve for the answer. The final answer is 132175.2 cubic centimeters or 1.3 times 10^5 cubic centimeters in scientific notation.

Answer:

GCF is 3

Step-by-step explanation:

Given the expression -9x + 15y

First, we need to find ther individual factors

-9x = -3 *3 * x

15y = 3 * 5 * y

Since 3 is common to both factors

−9x+15y = 3(-3x+5y)

Hence the GCF is 3

Answer:

I believe it's the third and fourth answers.

Step-by-step explanation:

Answer: the answer is 100

Step-by-step explanation:

Answer:

[tex]20 = \frac{Far \ arc - Near \ arc}{2}\\\\20 = \frac{160 - (2m +12)}{2}\\\\40 = 160 - (2m + 12)\\2m + 12 = 160 - 40\\2m = 120 -12\\2m = 108\\m = 54[/tex]

Answer:

m = 54

Step-by-step explanation:

The secant- secant angle 20° is half the difference of the intercepted arcs, that is

[tex]\frac{1}{2}[/tex] (160 - 2m - 12) = 20° ( multiply both sides by 2 to clear the fraction )

- 2m + 148 = 40° ( subtract 148 from both sides )

- 2m = - 108 ( divide both sides by - 2 )

m = 54

Answer: Random condition

10% condition

Step-by-step explanation:

The conditions for inference that have been satisfied will be:

• Random condition: This has been satisfied since a random sample of 18 adults were taken from 1500 adults.

• 10% condition: Since 25% of those who responded said they were in favor of the change, then the 10% condition is satisfied.

Answer:

64

Step-by-step explanation:

height of the hypotenuse:

[tex]\sqrt{60^2-36^2} = \sqrt{3600 - 1296} = \sqrt{2304} = 48[/tex]

36 : height = height : x

36 : 48 = 48 : x

x= 48^2/36 = 64

Answer:

X = 64

Step-by-step explanation:

Pythagoras Theorem

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