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Bad White [126]
2 years ago
9

The triangle has a right angle at the middle letter. In AABC, Ĉ = 40°, BC = 4 cm. Find AB.

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
5 0
Tan 40 degree= opposite (ab)/adjacent (4)
.839=ab/4
Ab=3.36cm
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mr Goodwill [35]
Option B is a better option.

Step by step:

I divided 40/6.29 and got about 6.3.

I divided 24/3.89 and got about 6.1.

Which is less, 6.3 or 6.1?
If you said 6.1 you are correct, so option B has a less cost, making it a better option.
8 0
2 years ago
Find the quotient: -10/9 divided by -5/7
Dmitry [639]

Answer:

70/45

Step-by-step explanation:

(-10/9) divided by (-5/7)  = (-10/9) / (-5/7)

dividing two fractions is the same as multiplying the top fraction by the reciprocal of the bottom one

top fraction = -10/9

bottom fraction = -5/7

reciprocal just means switching the numerator and denominator

reciprocal of bottom fraction = 7 / -5 = -7/5

thus,

(-10/9) / (-5/7) = (-10/9) * reciprocal of (-5/7) = (-10/9) * (-7/5) = 70/45

note that to multiply two fractions, you just multiply the numerators to get your new numerator and do the same thing with the denominators

6 0
2 years ago
(4x+1)(3x-7) yup it hurts
musickatia [10]

Answer:

12x^2-25x-7

Step-by-step explanation:

Multiply each term by its counterpart in the parenthesis.

4x*3x and 4x*-7

1*3x and 1*-7

This gives you 12x^2-4x*7+3x-7 when the like terms are combined.

Collect the like terms, which will give you 12x^2-25x-7

7 0
3 years ago
Read 2 more answers
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iren [92.7K]

Answer:

B

Step-by-step explanation:

This asks for data from multiple people, and it not just a yes or no question

7 0
3 years ago
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agasfer [191]
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2b + 4h = 7.40
subtract the first equation from it:
3h = 2.58
h = 0.86
5 0
3 years ago
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