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PSYCHO15rus [73]
3 years ago
13

7x-6-5x-7-2x simplify the expression

Mathematics
1 answer:
Lina20 [59]3 years ago
6 0
-13 is the simplified expression
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From the top of a tower, the angle of depression to a flower on the ground
Ronch [10]

Answer:

25.8 ft

Step-by-step explanation:

Draw a right triangle with the right angle at the foot of the tower. The interior angle of the triangle at the top is the complement of the angle of depression. 90 - 74 = 16; it measures 16°. The leg at the bottom has length x. The height of the tower is the vertical leg and is 90 ft. We are looking for x.

For the 16° angle, x is the opposite leg, and 90 ft is the adjacent leg.

tan A = opp/adj

tan 16° = x/(90 ft)

x = 90 ft * tan 16°

x = 25.8 ft

Answer: 25.8 ft

4 0
3 years ago
The area of a square is increasing at a rate of 24 centimeters squared per second. Find the rate of change of the side of the sq
velikii [3]

Answer:

3cm/s

Step-by-step explanation:

Area of a square is expressed as:

A = L²

Rate of change of area is expressed as:

dA/dt = dA/dL•dL/dt

Given that

dA/dt = 24cm²/s

L = 4cm

Required

dL/dt

Since dA/dl = 2L

dA/dl = 2(4)

dA/dl = 8cm

Subatitute the given values into the formula

24 = 8 dL/dt

dL/dt = 24/8

dL/dt = 3cm/s

8 0
3 years ago
 K is the midpoint of . if = 3x + 1 and     , find the length of
jarptica [38.1K]
3x + 1 = 1/3x + 9 Multiply through by 3 
<span>9x + 3 = x + 27 Subtract x </span>
<span>8x + 3 = 27 Subtract 3 </span>
<span>8x = 24 </span>
<span>x = 3 </span>

<span>AK = 3*3 + 1 = 10 </span>

<span>AB = 2*AK = 20</span>
4 0
3 years ago
Someone help me plss​
yan [13]

9. 12 edges

Work: <u>4</u> horizontal edges on top, <u>4</u> horizontal edges on bottom, <u>4</u> vertical edges for sides

10. Ten-thousands place

Work: The 8 is highlighted. The order of places is: <u>ten-thousands</u>, thousands, hundreds, tens, ones

11. 10 4/5

Work: 54 ÷ 5 ——> 50÷5 = <u>10</u> with 4 left over and put into a fraction of <u>4/5</u>

12. 3,000

Work: 2 is in the thousands place so you look to the place behind it and there is an 8. If the number behind is 5 through 9 then you round up. 8 is above 5, therefore, you round the 2 up to a <u>3</u>.

13. 0.45

Work: The pattern is +0.03 so 0.42+0.03=<u>0.45</u>

14. 54 cakes

Work: <u>6 eggs</u> per 1 cake • <u>9 cakes</u> = 6•9=54 eggs used

15. 378 desks in the school

Work: 6 rows • 7 desks per row = 42 desks in 1 classroom. 42 desks • 9 classrooms = 378 desks in the whole school

7 0
3 years ago
Read 2 more answers
Round 258,177 to the nearest thousand asap !!!!!
Leya [2.2K]
The nearest thousand would be 25800.
3 0
3 years ago
Read 2 more answers
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