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Aleks [24]
2 years ago
7

Factorise (a-2b) (3+x)​

Mathematics
1 answer:
fredd [130]2 years ago
5 0

Answer: ax - 2bx plus 3a - 6b

Step-by-step explanation: I’m not so sure with this but it might help

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Find the measures of the unknown angles in the triangle shown. Round it the nearest degree.
Fudgin [204]

Answer:

x = 49°

y = 41°

Step-by-step explanation:

Recall: SOH CAH TOA

✔️To find x, the trig function we would apply is Cos, which is:

Cos θ = Adjacent/Hypotenuse (CAH)

θ = x

Adjacent = 13

Hypotenuse = 20

Cos(x) = \frac{13}{20}

x = cos^{-1}(\frac{13}{20})

x = 49.4583981°

x = 49° (nearest degree)

✔️To find y, the trig function we would apply is Sin, which is:

Sin θ = Opposite/Hypotenuse (SOH)

θ = y

Opposite = 13

Hypotenuse = 20

Sin(y) = \frac{13}{20}

y = Sin^{-1}(\frac{13}{20})

y = 40.5416019°

y = 41° (nearest degree)

3 0
3 years ago
Factor 8x^3+2x^2-20x-5
IrinaK [193]

Answer:

(4x+1)(2x^2-5)

Step-by-step explanation:

3 0
3 years ago
Given 5 blue marbles, 3 red marbles and 2 white marbles. Find the probability of choosing a red marble given that its not white
Maslowich

Answer:

The chances you will get a red marble over a white or blue marble is 30%

Step-by-step explanation:

If you add 5 + 3 + 2 you will get 10

You then turn it into a fraction

3/10 is the chance you will get a red over a blue or white, now we need to convert it into a percentage by turning to 10 into 100 and multiplying 3 x 10

Once you have done that you should have 30/100

Take the 100 away and turn it into a percentage

The answer would be 30%

6 0
3 years ago
What three consecutive even numbers added up together equal 42
sdas [7]
12+14+16=42 is your answe
4 0
3 years ago
Read 2 more answers
Which graphed line represents an equation of a line with a slope of -2 and a point of line of (-1, 2)
Advocard [28]

Answer:

D

Step-by-step explanation:

by looking at the point you can see what has a slope.

it is also a decreasing slope

4 0
2 years ago
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