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Maru [420]
3 years ago
9

I need this question answered now please with a mini explanation thanks​

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
3 0

Answer:

100°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°, thus

∠ACB = 180° - (90 + 50)° = 180° - 140° = 40°

∠ECD = 40° ( vertical angle to ∠ACB )

Since CE ≅ ED then ΔCDE is isosceles and

∠CDE = ∠ECD = 40°

∠E = 180° - (40 + 40)° = 180° - 80° = 100°

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Dividing by 100 gives the same answer as multiplying by what number?explain,and give an example
Phantasy [73]
Dividing by 100 is the same as multiplying by 1/100 or 0.01, because when you divide by a fraction, in this case 100/1, you actually multiply by the reciprocal, which would be 1/100. For example 4/100 = 4 x 1/100 = 4/100 = 1/25 = 0.04. You can also just move the decimal two place values to the left to divide by 100. For example, 4/100 = 4. /100 = 0.04 = 1/25
3 0
3 years ago
Determine the gear ratio for a bike with 45 front teeth and 18 rear sprocket teeth.
My name is Ann [436]

Answer:

The gear ratio is 2.5 :1.

Step-by-step explanation:

A gear ratio is the ratio of the teeth on the front sprocket and the teeth on the rear sprocket.

Given is that the bike has 45 front teeth and 18 rear sprocket teeth.

So, gear ratio will be \frac{45}{18}= \frac{5}{2}=2.5

Hence, the ratio is 2.5 :1.

7 0
3 years ago
How do u know if an equation is linear?
krek1111 [17]

Answer:

An equation is linear if its graph forms a straight line. This will happen when the highest power of x is "1". Graphically, if the equation gives you a straight line then it is a linear equation. Else if it gives you a circle, or parabola or any other conic for that matter it is a quadratic or nonlinear equation.

Step-by-step explanation:

6 0
3 years ago
A company promises to release a new smartphone model every month. Each model's battery life will be 5% longer than the previous
Leni [432]

Answer:

895.05

Step-by-step explanation:

5% of 663 is 33.15, so times 33.15 by the 7 months and the answer to that is 232.05 then add that to the current battier life.

<u>The answer is </u>895.05

3 0
3 years ago
A=1/2h(B+b);a=135,B=6,b=9
Tomtit [17]

Answer:

Step-by-step explanation:

135=1/2h(6+9)

135=1/2h(15)

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7 0
3 years ago
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