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MaRussiya [10]
2 years ago
9

HELP HELP HELP HELP help help

Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

r  = 6

Step-by-step explanation:

To get the value of r we will use the pythagoras theorem a shown;

PR² = QR² + PQ²

(4+r)² = 8² + r²

Expand

16+8r+r² = 64 + r²

16 + 8r = 64

8r = 64 - 16

8r = 48

r = 48/8

r = 6

Hence the value of r is 6

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carol spends 17 hours in a 2 week peiod practicing her culinary skills how many hours does she pratice in 5 weeks?
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17/2 = 8.5 hours per week

8.5 x 5 = 42.5 hours in 5 weeks

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3 years ago
Simplify the expression:<br> -12 - 4x + 9 + -10 + 8x
Ann [662]

Answer:

Step-by-step explanation:

4x-13

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Traveling at an average rateaverage rate of between 40 and 50 miles per hour for 3 to 4 hours select the best estimate for the d
JulijaS [17]

Answer:

160 miles

Step-by-step explanation:

Distance = speed × time

Speed 1 = 40miles/hr , speed 2 = 50 miles/hr

Time 1 = 3 hrs,  time 2 = 4 hrs

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6 0
3 years ago
Please help !!!!!!!!!!!
Dvinal [7]

Answer: 6) x= 17 Same side interior angles sum to 180.

7) x= 3 Alternate exterior angles are equal.

8) x= 35 Corresponding angles are equal.

9) x= 12 Alternate interior angles are equal

Step-by-step explanation:

6) x= Same side interior angles sum to 180.

53+(8x-9)= 180

44+8x= 180

Subtract 44 from both sides

8x= 136

Divide both sides by 8

X = 17

7) x= Alternate exterior angles are equal. 15x+29= 26x-4

Subtract 15x from both sides

29= 11x-4

Add 4 to both sides

33= 11x

Divide both sides by 11

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8) x= Corresponding angles are equal.

4x+7= 6x-63

Subtract 4x from both sides

7 = 2x -63

Add 63 to both sides

70= 2x

Divide both sides by 2

X= 35

9) x= Alternate interior angles are equal

9x+37= 14x-23

Subtract 9 x from both sides

37= 5x -23

Add 23 to both sides

60= 5x

Divide both sides by 5

12=x

7 0
2 years ago
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