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Ilya [14]
3 years ago
10

Giving brainliest !! *easy*

Mathematics
1 answer:
Alex787 [66]3 years ago
8 0
Isn’t it 345? Is says right there
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Find the values ofx and y for the triange.<br> x<br> 60°<br> 30°<br> у
egoroff_w [7]

Answer:

x = 42, y = 36.37

Step-by-step explanation:

6 0
3 years ago
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A cylinder has a height h, and a radius (3h-2)
tekilochka [14]

Answer:

V= 4\pi (9h^2 -12h + 4)

Step-by-step explanation:

Given

Shape: Cylinder

Radius = 3h - 2

Height = h

Base\ Area = \pi (3h - 2)^2

Required

Simplify the volume

The volume is calculated as:

Volume = Base\ Area * Height

Substitute values for Base Area and Height

V= \pi(3h-2)^2*h

Expand the bracket

V= \pi(3h-2)(3h-2)*h

Open brackets

V= \pi (9h^2 -6h - 6h + 4) *h

V= \pi (9h^2 -12h + 4) *h

V= 4\pi (9h^2 -12h + 4)

6 0
3 years ago
Rachel earned \$34$34dollar sign, 34 in 444 hours at her job today. She wants to know how much she could earn (e)(e)left parenth
Flura [38]

Answer:

She will earn $85 in 10 hours.

Step-by-step explanation:

If Rachel earned $34 for 4 hours of work, we must divide the amount earned by the number of hours worked in order to find out her hourly rate and then multiply it by 10 to determine how much she would earn if she worked 10 hours.

e = \frac{34}{4}*10\\e=85

She will earn $85 in 10 hours.

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3 years ago
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(a) Find parametric equations for the line through (1, 4, 4) that is perpendicular to the plane x − y + 2z = 7. (Use the paramet
Alex777 [14]

Answer:

x=1+t\\y=4-t\\z=4+2t

Step-by-step explanation:

A vector perpendicular to the plane ax+by+cz+d=0 is of the form (a,b,c).

So, a vector perpendicular to the plane x − y + 2z = 7 is (1,-1,2).

The parametric equations of a line through the point (x_0,y_0,z_0) and parallel to the vector (a,b,c) are as follows:

x=x_0+at\\y=y_0+bt\\z=z_0+ct

Put (x_0,y_0,z_0)=(1,4,4) and (a,b,c)=(1,-1,2)

Therefore,

x=1+t\\y=4-t\\z=4+2t

xy-plane:

Put z = 0 ⇒ t = -2 ⇒x = - 1 , y = 6

So, at point (-1,6,0)

yz-plane:

Put x = 0 ⇒ t = -1 ⇒ y = 5, z =2

So, at point (0,5,2)

xz-plane:

Put y = 0 ⇒ t = 4 ⇒ x = 5, z = 12

So, at point (5,0,12)

5 0
3 years ago
PLEASE HELP ASAP ITS MATH I NEED ANSWERS FOR ALL
Paha777 [63]

Answer:

1. I (85.4)

2. T (0.854)

3. D (0.0854)

4. E (0.317)

5. P (3170)

6. E (0.0317)

7. N (9.4)

8. D (940)

9. S (0.094)

10. O (52.8)

11. N (528,000)

12. W (5.28)

13. H (3141.59)

14. O (31.4159)

15. H (0.0314159)

16. E (62.7)

17. H (0.0627)

18. A (0.000627)

19. D ($35.00)

20. S ($3500.00)

21. O ($0.35)

22. R (0.06666)

23. L (6,666)

24. U (0.6666)

25. N (70)

26.  C (7,000)

27. H (0.007)

8 0
3 years ago
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