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Sveta_85 [38]
3 years ago
12

Which of the following equations describes the graph?

Mathematics
2 answers:
san4es73 [151]3 years ago
7 0

Answer:

Option D  y=-3x^2 +4

Step-by-step explanation:

This is the correct answer because the graph is going down which shows that it is negative and the y intersect is +4

quester [9]3 years ago
5 0
Option D hope this helps .
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What is the half-angle of tangent 22.5 (degrees)?
Sergio039 [100]

Find tan (22.5)

Answer: #-1 + sqrt2#

Explanation:

Call tan (22.5) = tan t --> tan 2t = tan 45 = 1

Use trig identity: # tan 2t = (2tan t)/(1 - tan^2 t)# (1)

#tan 2t = 1 = (2tan t)/(1 - tan^2 t)# -->
--> #tan^2 t + 2(tan t) - 1 = 0#
Solve this quadratic equation for tan t.

#D = d^2 = b^2 - 4ac = 4 + 4 = 8# --> #d = +- 2sqrt2#
There are 2 real roots:
tan t = -b/2a +- d/2a = -2/1 + 2sqrt2/2 = - 1 +- sqrt2
Answer:
#tan t = tan (22.5) = - 1 +- sqrt2#
Since tan 22.5 is positive, then take the positive answer:
tan (22.5) = - 1 + sqrt2


6 0
3 years ago
Read 2 more answers
Chris spent a total of $53.07 buying art supplies. He bought a package of drawing paper for $24.75, and bought 12 brushes. What
zalisa [80]
2.36 is the answer because if you subtract 24.75 from 53.07 and then divide your answer by 12 is how you get your answer


3 0
2 years ago
Can u guys help pls?
Contact [7]

Answer:

(2 {n}^{2} ) ^{4}  \\ 2 \times 2 \times 2 \times 2 \times  {n}^{2 \times 4}  \\  {2}^{4}  \times  {n}^{8}  \\  = 16 {n}^{8}

<h3>Answer B is correct</h3>

7 0
3 years ago
What is 7/12 as a decimal<br><br> Please help ASAP
svlad2 [7]

Answer:

\frac{7}{12} = 0.583333333...

Step-by-step explanation:

To write \frac{7}{12} as a decimal.

Decimal defined as the number with a decimal point in it.

also, the decimal  point separates part of whole number and the fractional part in the decimal numbers.

To turn this fraction into a decimal number,

all you have to do is to divide the top number by bottom number i.e

\frac{7}{12} = 7 \div 12

\frac{7}{12} = 0.583333333...

Therefore, 7/12 as a decimal is, 0.583333333....

4 0
3 years ago
All of the following are examples of composite numbers except which one?
Nataly [62]
<span>All of the following are examples of composite numbers except which one?

2.</span>
5 0
3 years ago
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