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Debora [2.8K]
2 years ago
9

I don’t understand this at all help please

Mathematics
1 answer:
Talja [164]2 years ago
5 0

Answer:

225 km^2

Step-by-step explanation:

Area of a trapezoid: ((Base 1 + Base 2) x h) / 2

(11 + 19) x 15 / 2

= 225 km^2

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The principal uses a computer to randomly select the name of a student from all the students in
Arlecino [84]

Complete Question

Stillwater Junior High divides students into teams taught by a group of teachers. The table shows the number of students in each team.

Team{Number of Students}

Acers{78}

Blazers{80}

Outbacks{83}

Quasars{77}

Voyagers{82}

<u>Total-400</u>

Answer:

(A)81/399

Step-by-step explanation:

The probability that the Principal selects a voyager on the first try is:

82/400

Since another student is to be selected, the <u>total population has reduced by 1 </u>and the <u>number of voyagers likewise has been reduced by 1.</u>

Therefore:

Probability that another voyager is selected on the second try =

81/399

<u>The correct option is A.</u>

7 0
3 years ago
Pythagorean theorem. Appreciate the help with this question . Thank you very much who ever help with the question .
NikAS [45]

\textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=\stackrel{hypotenuse}{x}\\ a=\stackrel{adjacent}{30}\\ b=\stackrel{opposite}{40}\\ \end{cases} \\\\\\ x=\sqrt{30^2+40^2}\implies x=\sqrt{2500}\implies x=50

5 0
2 years ago
State whether the given measurements determine zero, one, or two triangles.
ohaa [14]

Answer:

One

Step-by-step explanation:

Find the value of B

Applying the law of sines

\frac{a}{sin(A)} = \frac{b}{sin(B)}

substitute the given values

\frac{23}{sin(61)} = \frac{24}{sin(B)}

sin (B) = \frac{24}{23}Sin(61)

step 2

Find the measure of angle C

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

so

61 + 65.87 + C = 180

C = 53.13

step 3

Find the value of c

Applying the law of sines

\frac{a}{sin(A)} = \frac{c}{sin(C)}

substitute the given values

\frac{23}{sin(61)} = \frac{c}{sin(53.13)}

c = \frac{23}{sin(61)}SIN (53.13)

C=21.04 units

so

there can only be one value for each measurement, therefore there can only be one triangle

4 0
3 years ago
I need help solving ​
vaieri [72.5K]

Answer:

well if you're looking for angles then

angle ADB = 30°

angle CBD = 80°

angle CDB = 120°

but they asked to classify triangle ADC ,whose measurements are 90° , 40° and 50° ...so of they're asking what type of triangle then it is a right angled triangle.

5 0
2 years ago
Read 2 more answers
I want an opinion<br> I think it's 18 don't know if it's a trick question
agasfer [191]

Answer:

Step-by-step explanation:

It’s 18 cuase you subtract 54-36=18

3 0
3 years ago
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