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Hunter-Best [27]
2 years ago
13

Please help!!! 43+29= ? +60

Mathematics
1 answer:
NemiM [27]2 years ago
8 0

Answer:

12

Step-by-step explanation:

43 + 29 = 72

? = 72 - 60 = 12

therefore, 43 + 29 = 12 + 60

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How old am I if 250 reduced by 5 times my age is 50?
Korolek [52]
250 - 5(x) = 50

250 (-250) - 5x = 50 (-250)

-5x = -200

-5x/-5 = -200/-5

x = 40

hope this helps

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4 0
3 years ago
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An airplane travels 800 miles with the wind in the same of time it takes to travel 650 miles against the wind. What is the speed
SOVA2 [1]

Answer:

90 mph

Step-by-step explanation:

Against wind DATA:

distance = 600 miles ; time = 5 hrs. ; rate = 600/5 = 120 mph

With wind DATA:

distance = 600 miles ; time = 2 hrs ; rate = 600/2 = 300 mph

Equations:

p + w = 300

p - w = 120

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p = 210 mph (speed of the plane in still air)

Since p+w = 300, w = 300-210 = 90 mph (speed of the wind)

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3 years ago
I ONLY NEED THE CHECK PART PLEASEEEE HELP ASAPPP i’ll mark brainliest !!!
inysia [295]

Answer:

x=-10

Step-by-step explanation:

(3x+2)/4=-7

3x+2=4×-7

3x=-28-2

3x=-30

x=-10

7 0
3 years ago
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What is the slope of the line between (3,-4) and (-2, 1)?<br> O 1<br> 02.<br> O-2<br> O-1
natka813 [3]

Answer:

-1……..........................

4 0
3 years ago
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Which of these equations is for a line perpendicular to y-3=5(x-2)?
olasank [31]

Answer:

C

Step-by-step explanation:

y-3=5(x-2)  (rearrange this to be in slope- intercept from) (add 3 to both sides)

y = 5(x-2) + 3   (distribute parentheses)

y = x(5) - 2(5) + 3

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recall that for a line with gradient m, the gradient of the perpendicular line will be - (1/m)

hence in our case, our gradient of the original line is 5, hence the gradient of the perpendicular line is -1/5

From the choices, the only one that is consistent with this is C

i.e choice C:

5y + x = 25

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y = -(1/5) x + 5   ===> gradient of -1/5

6 0
3 years ago
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