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oee [108]
3 years ago
15

Which of the following statements are false?

Mathematics
2 answers:
VikaD [51]3 years ago
7 0

well, a and d are true, and b is somewhat false...

angles that are both less than 90 degrees and higher than 0 have to add up to equal 90, not just be less than 90

c, is the same thing. Straight angles are 180 degrees, but supplementary means two angles add up to equal 180 degrees, not just one

so b and c may be true, im not sure

i know that a and d are true, therefore they are not the right answer


Trava [24]3 years ago
5 0

Answer:

a. vertical angles are congruent  - True.

Vertical angles are the angles opposite each other when two lines cross.

b. angles with measures between 0 degrees and 90 degrees are complementary  - True.

Complementary angles are two angles whose measures sum to 90 degrees.

c. straight angles are supplementary . False.

Rather supplementary angles add up to 180 degrees and together they make a straight angle.

d. angles with measures between 90 degrees and 180 degrees are obtuse. True.

An obtuse angle is an angle of greater than 90° and less than 180°.

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Most decks of playing cards contain 4 suits - hearts, clubs, diamonds, and spades. If you choose one card from the deck at rando
Murrr4er [49]

Answer:

1/4

Step-by-step explanation:

there are only four suits and an equal number of cards from each suit, which makes 13 hearts, clubs, spades, and diamonds, so the chance for one of them to be chosen is 13/52, which is reduced to 1/4, or 25 percent.

have a good day friend :)

5 0
2 years ago
−3x + y = 4,<br><br> −9x + 5y = −1<br> find x and y
katrin [286]

Answer:

9x - 3y = -12

-9x +5y = -1

2y = -13

y = -13/2

-3x - 13/2 = 8/2

-3x = 21/2

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x = -21/6 = -7/2

(-7/2, -13/2)

3 0
3 years ago
Mark charged a battery. Each minute, the percentage of the battery's capacity that was charged increased by 2.5 percent After 17
zhannawk [14.2K]

Answer:

The battery was 19 percent when the charging began.

It took 32.4 minutes for the battery to be fully charged.

Step-by-step explanation:

3 0
3 years ago
Please help me I’m having so much trouble I need ASAP I’m stressing :(
Elis [28]

Answer:

1000 (1.12)^t

Step-by-step explanation:

first year 1120

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8 0
2 years ago
A 6-sided die with sides numbered 1 through 6 is tossed. A penny is then tossed. If the penny comes up heads, the value of the d
Montano1993 [528]

Answer:

The probability that the outcome is less than 6 is 58.333%.

Step-by-step explanation:

Since a 6-sided die with sides numbered 1 through 6 is tossed, ya penny is then tossed, and if the penny comes up heads, the value of the die is multiplied by 2, but otherwise, the value of the die is left unchanged, to determine what is the probability that the outcome is less than 6 the following calculation must be performed:

(5/6 + 2/6) / 2 = X

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Therefore, the probability that the outcome is less than 6 is 58.333%.

5 0
2 years ago
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