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MrRa [10]
3 years ago
5

3x + 2y = 10 2x + 3y = 15/2

Mathematics
1 answer:
kompoz [17]3 years ago
3 0
Its false the answer is 3 1/2
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If the measure if one angle of a parallelogram is 90 degrees, what is the probability that the parallelogram is a rectangle?
Ipatiy [6.2K]
The probability is 100%.

Definition of rectangle:
A rectangle is a parallelogram with one right angle.

Remember that in math, "one right angle" means "at least one right angle."
If a parallelogram has one right angle, it must be a rectangle, and all angles are right angles.

This is why.
There are different ways to show this.
Here is one of them.
Opposite angles of a parallelogram are congruent.
If one angle measures 90 degrees, the opposite angle must also measure 90 degrees. You already have two right angles.
The sum of the measures of the angles of a quadrilateral is 360.
Two angles are right angles which add to 180 deg.
360 deg - 180 deg = 180 deg.
The other two angles have measures that also add up to 180 deg.
Since the other pair of opposite angles is also congruent, then both angles must measure 90 deg.
Therefore, if a parallelogram has one right angle, it must have 4 right angles, and it is a rectangle.
8 0
2 years ago
Data Set: 0, 0,1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
sesenic [268]

Answer:

Step-by-step explanation:

Mean : 3.1168831168831

Median :3

Mode:2

Range:11

Minimum:0

Maximum:11

4 0
3 years ago
Read 2 more answers
A group of 4 friends bought movie tickets. Each person also bought a large popcorn for $7.50. If they spent a total of $72, how
Andrew [12]

Answer:

$16.125 but i don't know if you have to round

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help and Thank you whoever you are.
LiRa [457]

Answer:

Whole #'s: All natural numbers plus 0

Integers: Whole numbers and their opposites

Rationals: Can be expressed as ratios, repeating numbers, decimals, so on.

1.

-2/5 is a fraction or ratio, meaning it doesn't belong in whole NOR integer.

-2/5 belongs in the rationals box.

-7.8 is negative, but it is a decimal, so it belongs in the rationals box.

1/10 is not a whole, not an integer, but a rational number.

13 is a whole number, integer, and rational, so it belongs in the whole box.

10 is also a whole number grouped under the categories given.

-5 is the opposite of 5, and whole numbers aren't negative, so -5 belongs in the integers box.

-8/4 is a fraction, not considering its simplified form that would give -2, so it belongs in the rationals box.

2.

We know there are 208 pages in total. On Monday, she read 3/8 of the pages. This can be demonstrated as 208 * 3/8, which is 78. 208-78 = 130.

We know there are 130 pages left. On Tuesday, she reads 28 pages. 130-28=102

We know there are 102 pages left. On Wednesday, she read 1/4 of the total pages. 1/4 (of) 208 is 1/4*208, that is 52.

To know how many pages are left, we subtract her read pages from the remaining pages. 102-52 = 50.

Amanda has 50 pages left until she finishes the novel.

Hope this helped.

4 0
2 years ago
A child walks 3/10 of a mile in 1/5 hour. At this rate, how far will the child walk in 1 hours ?
sertanlavr [38]

Answer:

1.5 miles

Step-by-step explanation:

.3 miles/12 minutes x 5/5 = 1.5 miles/ 1 hour

4 0
3 years ago
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