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zysi [14]
3 years ago
6

The first four terms

Mathematics
1 answer:
sweet [91]3 years ago
8 0
An1 = 3n^2 -7 = 3(1)^2 -7 = 3(1)-7 = -4

an2 = 3n^2 -7 = 3(2)^2 -7 = 3(4)-7 = 5

an3 = 3n^2 -7 = 3(3)^2 -7 = 3(9)-7 = 20

an4 = 3n^2 -7 = 3(4)^2 -7 = 3(16)-7 = 41
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What percent of 287.5 is 46
lozanna [386]
46/287.5 = .16
.16x287.5 = 46

The answer is 16%
3 0
3 years ago
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For every ton of paper that is recycled, 17 trees are saved. Discrete or continuous?
dusya [7]
I would say continuous because you can technically cut down half a tree or recycle half a piece of paper
6 0
3 years ago
What is the slope-intercept form of this equation?
kirill [66]

Answer:

y = -8x + 12

Step-by-step explanation:

Slope intercept form: y = mx + b

m ---> Slope   & b ----> y-intercept

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y = -8x + 12

5 0
3 years ago
Sinx = 1/2, cosy = sqrt2/2, and angle x and angle y are both in the first quadrant.
Leviafan [203]

Answer:

Option D. 3.73​

Step-by-step explanation:

we know that

tan(x+y)=\frac{tan(x)+tan(y)}{1-tan(x)tan(y)}

and

sin^{2}(\alpha)+cos^{2}(\alpha)=1

step 1

Find cos(X)

we have

sin(x)=\frac{1}{2}

we know that

sin^{2}(x)+cos^{2}(x)=1

substitute

(\frac{1}{2})^{2}+cos^{2}(x)=1

cos^{2}(x)=1-\frac{1}{4}

cos^{2}(x)=\frac{3}{4}

cos(x)=\frac{\sqrt{3}}{2}

step 2

Find tan(x)

tan(x)=sin(x)/cos(x)

substitute

tan(x)=1/\sqrt{3}

step 3

Find sin(y)

we have

cos(y)=\frac{\sqrt{2}}{2}

we know that

sin^{2}(y)+cos^{2}(y)=1

substitute

sin^{2}(y)+(\frac{\sqrt{2}}{2})^{2}=1

sin^{2}(y)=1-\frac{2}{4}

sin^{2}(y)=\frac{2}{4}

sin(y)=\frac{\sqrt{2}}{2}

step 4

Find tan(y)

tan(y)=sin(y)/cos(y)

substitute

tan(y)=1

step 5      

Find tan(x+y)

tan(x+y)=\frac{tan(x)+tan(y)}{1-tan(x)tan(y)}

substitute

tan(x+y)=[1/\sqrt{3}+1}]/[{1-1/\sqrt{3}}]=3.73

7 0
3 years ago
PLEASE HELP.<br>What is the slope of theine graphed below​
Aleks04 [339]
The slope is 3/2

Steps:
4 - (-2) = 6

5 - (-4) = 9

Put into a fraction, with the y sum on top.

Reduce

5 0
3 years ago
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