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2 years ago

7 points!

Mathematics

1 answer:

Travka [436]2 years ago

6 0

It is the plus minus sign. It means to do the addition and subtraction.

Examples:

10 ± 7 = 17 and 3

15 ± 5 = 20 and 10

100 ± 90 = 190 and 10

It is generally used to indicate a possibility of two outcomes. A negative or positive outcome.

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Solve the right triangle. Round decimal answers to the nearest tenth.

AnnZ [28]

Answer:

See solution below

Step-by-step explanation:

According to pythagoras theorem

hyp^2 = opp^2 + adj^2

10^2 = 4^2 + b^2

100 = 16 + b^2

b^2 = 100-16

b^2 = 84

b = √84

b ≈ 9

Using SOH CHA TOA identity

sin B = AC/AB

Sin B = 9/10

B = arcsin0.9

B ≈ 64degrees

sinA = BC/AB

Sin A = 4/10

A = arcsin0.4

A ≈ 24degrees

5 0

2 years ago

20 PTS!

mafiozo [28]

Answer:

finding the number of equal-sized parts into which a number can be split

Step-by-step explanation:

Let us split the number 80 into 10 equal parts.

80 = 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8

= 8 + 8 + 8 +...to 10 times

= 8(10)

or $\frac{80}{10} =8$

So, if N is any number and p is one of its equal part, then the number of parts into which N is split by p is $\frac{N}{p}$ .

Hence, finding the number of equal-sized parts is best modeled with a division expression.

4 0

3 years ago

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Cards with the numbers 1 through 40 are placed in a box and thoroughly shuffled.

MrRa [10]

9/40 + 2/40 = 11/40

hope this helps

7 0

2 years ago

Fun fact Bananas are curved because they grow towards the sun ☀️

Phoenix [80]

Answer:

true

Step-by-step explanation:

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2 years ago

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What is the absolute value of │38│

ale4655 [162]

Answer:

Step-by-step explanation:

if there are bars around it its automatically positive even if it was -38 the absolute would still be 38.

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2 years ago

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