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AysviL [449]
3 years ago
11

HELP PLEASE BE QUICK

Mathematics
2 answers:
mart [117]3 years ago
4 0

Answer:

A

Step-by-step explanation:

Using the sine ratio in the right triangle

sin40° = \frac{opposite}{hypotenuse} = \frac{AC}{AB} = \frac{AC}{7}

Multiply both sides by 7, thus

AC = 7sin40° → A

laiz [17]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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Pls help. I WILL KISS U!4!2!3! (REAL!!) pls n ty.
ella [17]

Answer:

AB=36

Step-by-step explanation:

BC=AC

AB=√(AC²+BC²)=√[(18√2)²+(18√2)²]=√(2×18²×2)=2×18=36

3 0
3 years ago
6/7 divided by 2/3 = ???
Nana76 [90]

Answer:

1 2/7

Step-by-step explanation:

Hi! so this is very easy to solve. Let me guide you through it!

6/7 divided by 2/3

Dividing two fractions is the same as multiplying the first fraction by the reciprocal (inverse) of the second fraction.

Take the reciprocal of the second fraction by flipping the numerator and denominator and changing the operation to multiplication. Then the equation becomes

6/7 X 3/2

For fraction multiplication, multiply the numerators and then multiply the denominators to get

6      x 3       18

__    ___  =  ____  

7       x2          24

This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 18 and 14 using

GCF(18,14) = 2

18     ÷ 2           9

___     ___   =   ___

14      ÷ 2             7

The fraction

9/7

is the same as

9÷7

Convert to a mixed number using

long division for 9 ÷ 7 = 1R2, so

9/7=1 2/7

so there fore =

6/7÷2/3=1 2/7

(sorrry this took long i was solving it!)

4 0
3 years ago
mrs emily want to go shopping but only has $100 to spend. she wants to buy a pair of jeans for $35 and a few dress shirts for $1
stealth61 [152]

Answer:

35x+15y is less than or equal to 100.

Step-by-step explanation:

35 per Jean + 15 per shirt is less than or equal to 100

6 0
3 years ago
A bag contains 5 red marbles, 4 blue marbles, 3 green marbles, and no other marbles. If a marble is chosen at random from the ba
MAXImum [283]

Answer:

A = choosing a red marble

B = choosing a green marble

Probability of A happening = P(A) = 5/(3+5+4) = 5/12

Probability of B happening = P(B) = 4/(3+5+4) = 4/12

Probability of either happening = P(A) + P(B) = 5/12 + 4/12 = 7/12

The key word in their question is red OR green and that is why we add the two probabilities. If they ask the probability of them both happening (if they said red AND green), you would multiply P(A)*P(B).

3 0
3 years ago
Read 2 more answers
Evaluate 15r -1 when r=5
alukav5142 [94]

Answer:

74

Step-by-step explanation:

You just have to substitute r with 5.

Now, the equation looks like this:

15(5)-1

Next, solve 15*5 first according to PEMDAS

And 15*5 equals 75

\frac{\left[\begin{array}{ccc}1&5\\5\\\end{array}\right] }{75}

Lastly, do 75-1 which equals 74

\frac{\left[\begin{array}{ccc}7&5\\-1\\\end{array}\right] }{74}

Therefore, 74 is your answer.

3 0
3 years ago
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