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3 years ago

PLEASE HELP FAST! what is the length of segment AB? 10 12 13 15

Mathematics

2 answers:

ss7ja [257]3 years ago

4 0

Answer:

Step-by-step explanation:

This triangle appears to be 5 units wide and 12 units tall.

Using the pythagorean theorem, a^2 + b^2 = c^2, we get 25 + 144 = 169 or 13^2.

Therefore the answer is 13.

nekit [7.7K]3 years ago

3 0

Use the picture below for a detailed explanation.

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Solve the SYSTEM: 2x - 3y = 12 3x - 2y = 13

dangina [55]

Answer:

x =69 y= 420

Step-by-step explanation:

69⁹99999999999999999999999999999999999

6 0

3 years ago

The Academic Computing Center has five trainers available in its computer labs to provide training sessions to students. Assume

kondor19780726 [428]

Answer:

87.72%

Step-by-step explanation:

Data provided in the question:

Design capacity of the system = 1900 students per semester

Effective capacity = 90% of design capacity

Actual number of students = 1500

Now,

Efficiency = [ [ Actual capacity ] ÷ [ Effective capacity ] ] × 100%

also,

Effective capacity = 90% of 1900

= 0.90 × 1900

= 1710

Efficiency = [ 1500 ÷ 1710 ] × 100%

= 0.8772 × 100%

= 87.72%

7 0

3 years ago

Four friends drove from their homes in four different cities to a class reunion.

Brilliant_brown [7]

Answer:

Tomas

Step-by-step explanation:

Let's use miles per hour

Maren: 60 miles/hour (It's given to us)

Safiya: 120 miles/3 hours

Let's divide both by three to get to miles/hour.

120/3=40

40 miles/hour

Tomas: 84 miles/1.2 hours

Let's divide both by 1.2 to get to miles/hour

84/1.2=70

70 miles/hour

Cam: 75 miles/1.5 hours

Let's divide both by 1.5 to get to miles/hour

75/1.5=50

50 miles/hour

After comparing all the speeds we can conclude that Tomas drove the fastest.

3 0

2 years ago

Find the difference. (9/x^2-9x)-(6/x^2-81)

Sunny_sXe [5.5K]

The difference is $\frac{3 x+81}{x(x-9)(x+9)}$

Explanation:

The expression is $\left(\frac{9}{x^{2}-9 x}\right)-\left(\frac{6}{x^{2}-81}\right)$

Removing the parenthesis, we have,

$\left\frac{9}{x^{2}-9 x}\right-\left\frac{6}{x^{2}-81}\right$

Factoring the terms $x^{2}-9 x$ and $x^{2}-81$ , we get,

$\frac{9}{x(x-9)}-\frac{6}{(x+9)(x-9)}$

Taking LCM, we get,

$\frac{9(x+9)-6x}{x(x-9)(x+9)}}$

Simplifying the numerator, we get,

$\frac{9x+81-6x}{x(x-9)(x+9)}}$

Subtracting the numerator, we have,

$\frac{3 x+81}{x(x-9)(x+9)}$

Hence, the difference is $\frac{3 x+81}{x(x-9)(x+9)}$

7 0

3 years ago

daniel is standing 100ft from a tower and sees a bird land on top of the tower. if the angle of elevation from daniel to the top

Arada [10]

Check the picture below.

make sure your calculator is in Degree mode.

3 0

4 years ago