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Rudik [331]
3 years ago
14

7h – 5(3h – 8) = –72

Mathematics
2 answers:
Serga [27]3 years ago
4 0

7h-5(3h-8)=-72

7h-15h+40=-72      /-40

-8h=-112    /:(-8)

h=14


Y_Kistochka [10]3 years ago
4 0
7h - 5(3h - 8) = -72 \\ 7h - 15h +40 = -72 \\ -8h=-72-40 \\ 8h=112 \\ h= \frac{112}{8} =14
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Sav [38]

Answer:

The distance of the midpoint of AB = 4 cm

The distance of the midpoint of CD = 28 cm

Step-by-step explanation:

The given information are;

Segment AD = 36

Point C and point B are points on AD such that AB:BC:CD = 2:3:4

Which gives;

The proportion of AB in AD = 2/(2+3+4) = 2/9

The length of AB = 2/9×36 = 8 cm

The proportion of BC in AD = 3/(2+3+4) = 3/9

The length of AD = 3/9×36 = 12 cm

The proportion of CD in AD = 3/(2+3+4) = 4/9

The length of AD = 4/9×36 = 16 cm

The coordinate of the midpoint of AB = 8/2 = 4 cm from A

The distance of the midpoint of AB = 4 cm

The coordinate of the midpoint of CD = 8 + 12 + 16/2 = 28 cm from A

The distance of the midpoint of CD = 28 cm.

6 0
3 years ago
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Anni [7]

Answer:

Step-by-step explanation:

f(x) = -8x + 20

f(-1) = -8* -1 + 20 = 8+20 =28

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If 3x - 3y = 9 and x + y = 5. then x equals...?​
Gwar [14]

Answer: x = 4

Step-by-step explanation:

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y = 5 - x

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