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Ivanshal [37]
3 years ago
10

4. There are 25 students in a college math class.

Mathematics
1 answer:
Firdavs [7]3 years ago
6 0

22

The mean is the middle; the middle of 20 and 24 is 22

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10) If two angles in a triangle measure 53 degrees and 45 degrees, what is the value of the
pshichka [43]

Answer:

d

Step-by-step explanation:

8 0
2 years ago
The area of an equilateral triangle is given by A =3^1/2/4s^2. Find the length of the side s of an equilateral triangle with an
yan [13]

Answer:

The length of the side of an equilateral traingle s=2\sqrt{2} inches

Step-by-step explanation:

Given that the area of an equilateral triangle is given by

A=3^\frac{1}{2}s^2

It can be written as

a=\frac{\sqrt{3}}{4} s^2 Square inches        (1)

To find the length of the side s os an equilateral triangle

Given that area of an equilateral triangle is 12^\frac{1}{2} square inches

It can be written as

A=12^\frac{1}{2}

A=\sqrt{12} square inches

It can be written as

A=12^\frac{1}{2}

A=\sqrt{12} square inches           (2)

Now comparing equations (1) and (2) we get

\frac{\sqrt{3}}{4}s^2=\sqrt{12}

\frac{\sqrt{3}}{4}s^2=\sqrt{4\times 3}

Dividing by \frac{\sqrt{3}}{4} on both sides we get

\frac{\frac{\sqrt{3}}{4}s^2}{\frac{\sqrt{3}}{4}}=\frac{2\sqrt{3}}{\frac{\sqrt{3}}{4}}

\frac{\sqrt{3}}{4}s^2\times\frac{4}{\sqrt{3}}=2\sqrt{3}\times\frac{4}{\sqrt{3}}

s^2=8

s=\sqrt{8}

Therefore s=2\sqrt{2} inches

Therefore the length of the side of an equilateral traingle s=2\sqrt{2} inches

3 0
2 years ago
Solve for x: x^2 + 28x = 60
Alisiya [41]

For this case we have a quadratic equation, x ^ 2 + 28x-60 = 0, of the form ax ^ 2 + bx + c = 0

Where:

a = 1\\b = 28\\c = -60

We can solve the equation by factoring, that is, we bias two numbers that multiplied give as a result -60 and added as a result 28.

These numbers are:

+30\ and\ -2\\+ 30-2 = + 28\\+ 30 * -2 + -60

Then, the factorization is given by:

(x-2) (x + 30) = 0

The roots are:

x_ {1} = 2\\x_ {2} = - 30

Answer:

x_ {1} = 2\\x_ {2} = - 30

8 0
2 years ago
⚠️❗️⚠️❗️⚠️ 10 POINTS The people answering this get it wrong please get it right what is the area
mestny [16]

Answer:

187 units²

Step-by-step explanation:

break the figure into two rectangles

one 16 by 7 , the other 25 by 3

a = (16 * 7) + (25 * 3)

a = 187

7 0
2 years ago
How many solutions does the equation −2a + 2a + 7 = 8 have? One Two None Infinitely many
aleksandrvk [35]

Answer:

no solutions

Step-by-step explanation:

−2a + 2a + 7 = 8

Combine like terms

7 = 8

This is never true so there are no solutions

5 0
3 years ago
Read 2 more answers
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