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Alex_Xolod [135]

3 years ago

15

There are 30 students in a class. The teacher will choose 2 students at random to represent the class at an assembly. How many g

roups of 2 students can be chosen?

1 answer:

Sunny_sXe [5.5K]3 years ago

8 0

30/2=15
15 groups of 2 can be chosen.

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the length of diagonal of a rectangular field is 23.7 m and one of its sides is 18.8 m. find the perimeter of the field.

katen-ka-za [31]

Answer:

Approximately 66.4 Meters

Step-by-step explanation:

So we have a rectangle with a width of 18.8 meters and a diagonal with 23.7 meters. To find the perimeter, we need to find the length first. Since a rectangle has four right angles, we can use the Pythagorean Theorem, where the diagonal is the hypotenuse.

$a^2+b^2=c^2$

Plug in 18.8 for either <em>a </em>or <em>b. </em>Plug in the diagonal 23.7 for <em>c. </em>

<em /> $(18.8)^2+b^2=23.7^2\\b^2=23.7^2-18.8^2\\b=\sqrt{23.7^2-18.8^2} \\b\approx14.4 \text{ meters}$

Therefore, the length is 14.4 meters. Now, find the perimeter:

$P=2l+2w\\P=2(14.4)+2(18.8)\\P=66.4\text{ meters}$

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2 years ago

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Montano1993 [528]

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5 0

3 years ago

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can someone help me solve this question

kodGreya [7K]

Answer:

D

Step-by-step explanation:

y=mx+b

m = slope

b = y intercept

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3 years ago

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You want to buy a bouquet of yellow roses and baby’s breath for $16 the baby’s breath cost $3.50 per bunch, and the roses cost $

Stolb23 [73]

•.,¸¸,.•´¯ ' ¯´•.,¸¸,.•`

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3 0

3 years ago

Two angles are supplementary. One is 56° more than three times three times the other. Find the measures of the angles.

kaheart [24]

Supplementary means they equal 180 when added. Therefore:

X+56+3x=180
Combine common units
4x+56=180
Subtract 56 from both sides
4x=124
Divide by 4
X=31

Now we know the smaller angle is 31 degrees. Now we plug that into the larger angle:
3(31)+56
93+56
149

The larger angle is 149 degrees.

I hope this Helps!

8 0

2 years ago