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OverLord2011 [107]

2 years ago

11

Will give brainliest need anwser now: Karen and Kevin collect coins. Karen has x coins. Kevin has 4 coins fewer than four times

the number of coins Karen has. Write and simplify an expression for the total number of coins Karen and Kevin have.

1 answer:

vodka [1.7K]2 years ago

5 0

Answer:

100889999999999999999

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Two complex numbers have a sum of 14 and a product of 74. Write either of the two numbers.

IrinaVladis [17]

Answer:

Hello,

Step-by-step explanation:

The 2 numbers are roots of the equation:

U²-14U+74=0

Discriminant=14²-4*74=-100

<u>U=7-5i or U=7+5i</u>

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2 years ago

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A 5 mile jogging path diagonal divides a rectangular park in half. The park is 4 miles long. Find the width of the park.

levacccp [35]

Answer: The required width of the park is 3 miles.

Step-by-step explanation: Given that a 5 mile jogging path diagonal divides a rectangular park in half and the park is 4 miles long.

We are to find the width of the park.

As shown in the attached figure below, the diagonal BD divides the rectangle ABCD into two equal parts,

where length DA = 5 miles, BD = 4 miles and AB = width = ?

Since each angle of a rectangle is right-angle, so triangle ABD will be a right-angled triangle.

Using Pythagoras theorem in triangle ABD, we have

$BD^2=AB^2+DA^2\\\\\Rightarrow AB=\sqrt{BD^2-DA^2}\\\\\Rightarrow AB=\sqrt{5^2-4^2}\\\\\Rightarrow AB=\sqrt{25-16}\\\\\Rightarrow AB=\sqrt{9}\\\\\Rightarrow AB=3.$

Thus, the required width of the park is 3 miles.

7 0

2 years ago

The sixth grade runs a bake sale for 55 hours and makes $170$170. The seventh grade sets up a dunking booth for 44 hours and mak

USPshnik [31]

The answer is the sixth grade class.

In order to find the answer, you have to divide each grade's total by the number of hours it took them to make that money, which will give you the amount each class makes per hour.

$170 / 55 = $3.09
$112 / 44 = $2.54
$192 / 66 = $2.91

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2 years ago

What is the domain of the sine and cosine functions?

Sholpan [36]

Answer:

all real numbers

only the range value is with a minimum of -1 and a maximum of 1 unless there's a vertical shift.

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2 years ago

Find the surface area of the square pyramid shown below.

Katarina [22]

Answer:

The surface area is 40

Step-by-step explanation:

It is 40 because you have to find the area of each face so you would do 3*4 which equals 12 and since there is 4 of the triangles you do 12*4 which is 48 but when it's a triangle you have to cut it in half so it would really be 24.

Then for the square on the bottom you would do 4*4 which is 16 and then you would add the totals to get 40.

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2 years ago