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3 years ago

In △ABC , m∠A=x° , m∠B=(3x+30)° , and m∠C=2x° . What is the measure of ∠B ?

Mathematics

1 answer:

Xelga [282]3 years ago

3 0

Answer: 105

Step-by-step explanation:

Angle A, B, and C all add up to 180 degrees. So you combine the equations and get “6x+30=180” so x=25 and then you plug 25 for x into the equation for angle B and you get “75+30” which equals “105”.

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Answer and Step-by-step explanation:

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2 years ago

Jamie takes at random a counter from the bag and records the colour. Red : blue : green = 1:3:7 Jamie does this a number of time

Sonbull [250]

Answer: There are 249 times Jamie takes a counter from the bag.

Explanation:

Since we have given that

Ratio of colour of red to blue to green is 1:3:7.

Number of blue counters = 68

Let the total number of times Jamie does from the bag be x.

So, According to question,

$\frac{3}{11}\times x=68\\\\x=\frac{11}{3}\times 68\\\\x=249.33\\\\=249\ approx.$

Hence, there are 249 times Jamie takes a counter from the bag.

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3 years ago

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7nadin3 [17]

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3 years ago

2y-18x=-26 solve for y

Alekssandra [29.7K]

2y - 18x = -26

Add 18x to both sides.

2y = -26 + 18x

Divide by 2 on both sides.

y = -13 + 9x

y = 9x - 13

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3 years ago

I need help plz find the constant rate

iragen [17]

Answer:

- 5 °F/h

Step-by-step explanation:

the constant rate = slope = rise / run = -5/1 = - 5 °F/h

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3 years ago