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Setler79 [48]
2 years ago
15

a student did an experiment and determined the percent sugar in a piece of gum to be 67%. The accepted value for th percent suga

r in a piece of gum is 74%. what is the percent error in the students' calculations?
Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
6 0
I don’t know, I need points
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Naddik [55]
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4 0
2 years ago
Evaluate csc(-315°).
Maru [420]

Answer:

\frac{2}{\sqrt{2} } = \sqrt{2}

Step-by-step explanation:

Notice from the attached image that -315 degrees is the same as 45 degrees.

Recall as well that the csc function is defined as the reciprocal of the sine function: csc(x)=\frac{1}{sin(x)}

Then, you need to evaluate \frac{1}{sin(45)} = 1/\frac{\sqrt{2} }{2} = \frac{2}{\sqrt{2} } =\sqrt{2}

8 0
3 years ago
Find the axis of symmetry and vertex of the following y= -2x2-3x+2
Mnenie [13.5K]
Y= -2x²-3x+2, (form y = ax² +b .x + c

The parabola opens downward & hence it's Vertex is a MAXIMUM.

We know that the axis of symmetry is -b/2a ==>3/(-4) ==>
x= - 3/4 (axis of symmetry. At x=-3/4 , y = 25/8 = 3.125

Hence the axis of symmetry is x= - 3/4 & the vertex is at (-3/4, 25/8)
8 0
3 years ago
Find the product and explain the process and reasoning. 0.79 x 3.7
LenKa [72]

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7 0
3 years ago
Find the exact length of the third side.
malfutka [58]

Answer:

5sqrt3

Step-by-step explanation:

Using the pythagorean theorem, we have a^2+4^2=9^2

a^2 + 16 = 81

a^2 = 75.

a = sqrt75.

75 = 25*3. 25 is a perfect square, so sqrt75 = 5sqrt3

6 0
3 years ago
Read 2 more answers
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