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konstantin123 [22]
3 years ago
13

Jamima said that the vertex of the equation g(x)=-2(x+1)^2-4 is (-1,-4). is she correct?

Mathematics
1 answer:
Bond [772]3 years ago
6 0
Yes, the vertex is h, k
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I have no clue how to do this!!!
lara31 [8.8K]
Step One
Find z
All triangles have 180 degrees. No exceptions.
z + 47 + 90 = 180      combine like terms on the left.
z + 137 = 180            subtract 137 from both sides
z =  180 - 137        
z = 43 degrees.

Step Two
Use the sine function to find y
Sin(43) = opposite side / hypotenuse
opposite side = 35 

sin(43) = 35 / hypotenuse
hypotenuse = 35 / sin(43)
y = 35/0.6820
y = 51.32 

Solve using cos(x)
Note this problem could have been done in a shorter way.
Cos(47) = adjacent / hypotenuse.
hypotenuse = adjacent / cos(47)
y = 35 / cos(47)
y = 35 / 0.6820
y = 51.32 Both answers agree. It is a good thing to know how to do this question both ways.
5 0
3 years ago
if £2000 is placed into a bank account that pay 3% compound interest per year how much will be in the account after 2 year
zalisa [80]
Use the compound amount formula:

A = P(1+r)^t

Here, A = £2000 (1+0.03)^2 = <span>£2121.80 (answer)</span>
6 0
3 years ago
What is the following number in decimal form? 8.49 x10^-7
guajiro [1.7K]

8.49 x 10⁻⁷  =  0.000000849

7 0
3 years ago
Read 2 more answers
Please answer quickly. 50 points.<br> Answer 1. and 4. on statements and all of the reasons.
Keith_Richards [23]
1. Is angle 2 and angle 5 are supplementary and the reason is the given
4. The answer is L || M because of the converse of the CIA theorem( corresponding interior angles)

6 0
3 years ago
An Equilateral Triangle has sides that all measure 10 inches. What is
densk [106]

Answer:

easy peasy lemon squeasy

Step-by-step explanation:

1. base of triangle: it is an equilateral triangle, so any side of the triangle you take is the base, (usually the largest side of the triangle is the base)

so that would be => 10 inches,

2. a property of an equilateral triangle is that , the median of the triangle coincides with the height of the triangle,

therefore, the height bisects the base and makes a right triangle with another side, therefore by using the Pythagoras theorem, we find it to be 8.66(approx)

now,

area of the triangle would be (putting the values we just found in the formula given)

=> [(10)(8.66)]/ 2

=>43.3 square inches

4 0
3 years ago
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