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Bond [772]
2 years ago
7

there is more than one question! please help ! i have been struggling all day and today i’m on a time limit !

Mathematics
1 answer:
antiseptic1488 [7]2 years ago
4 0

Answer:

  3(5h - 2g)

= 3×5h - 3×2g  

= 15h - 6g

  5(12g - 4f)

= 5×12g - 5×4f

= 60g - 20f

  2(h - 3g)

= 2×h - 2×3g

= 2h - 6g

  4(3x - g) + 4x

= 4×3x - 4×g + 4x

= 12x - 4g + 4x

= 16x - 4g

  9(4g + 1) - 5g

= 9×4g + 9×1 - 5g

= 36g + 9 - 5g

= 31g + 9

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lozanna [386]
Answer:
No and No

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Have a nice day
8 0
3 years ago
the angle of elevation of the top of a tower from a point 42m away from the base on level ground is 36 find the height of the to
Tcecarenko [31]

Answer:

30.51 meters

Step-by-step explanation:

Given that:

The distance from the point to the base of the tower = 42 m, the angle of elevation = 36°.

According to sine rule if a,b,c are the sides of a triangle and its respective opposite angles are A, B, C. Therefore:

\frac{a}{sin(A)} =\frac{b}{sin(B)}=\frac{c}{sin(C)}

Let the height of the tower be a and the angle opposite the height be A = angle of elevation = 36°

Also let the  distance from the point to the base of the tower be b = 42 m, and the angle opposite the base of the tower be B

To find B, since the angle between the height of the tower and the base is 90°, we use:

B + 36° + 90° = 180° (sum of angles in a triangle)

B + 126 = 180

B = 180 - 126

B = 54°

Therefore using sine rule:

\frac{a}{sin(A)} =\frac{b}{sin(B)}\\\\\frac{a}{sin(36)}=\frac{42}{sin(54)}\\\\  a=\frac{42*sin(36)}{sin(54)}\\ \\a=30.51\ meters

The height of the tower is 30.51 meters

6 0
3 years ago
Marcie solved the following inequality, and her work is shown below.
mihalych1998 [28]

Answer:

She didn't change the direction of the sign

Step-by-step explanation:

When dividing both sides by a negative number in an inequality, you must change the sign.

4 0
3 years ago
(14) Geometry pls help<br><br> Check my ans<br><br> I really dont know on this one
mestny [16]
Close. It's actually choice D) 7 < n < 17
The value n must be less than 5+12 = 17. If its equal to 17 or larger, then a triangle isn't possible. 
3 0
4 years ago
8. The graph shows the amount of savings over time in Eliana's account.
Rashid [163]

Answer:

376

Step-by-step explanation:

376+376

3 0
4 years ago
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