HELP! 2 problems!

Mathematics

1 answer:

Anit [1.1K]3 years ago

8 0

Answer:

x=4 (solution) x=-14 (extraneous solution )

Step-by-step explanation:

|x+5|=9 -------original equation

Equation can be equal to +9 and -9

x+5 =9 x+5 =-9

x= 9-5 x=-9-5

x=4 (solution) x=-14 (extraneous solution )

for checking

x+5 = 9 x + 5=9

4+5= 9 -14+5=9

9=9 -9=-9

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Please help question 4

Burka [1]

Answer:

40 miles

Step-by-step explanation:

let distance be d and time be t

Since d varies directly with t, then the equation relating them is

d = kt ← k is the constant of variation

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A rectangle has a perimeter of 20 inches the width of a triangle is 4 inches what is the height of a similar rectangle that has

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CaHeK987 [17]

<span>30cm is the difference between the height of the soap in the full dispenser and height of the remaining soap.

</span>The formula for cylindrical height is:

  Area
  --------   - r
2 * π * r

Cylindrical height of full dispenser.

  5652 5652
--------------------- - 7.5 = ------------ - 7.5 = 120 - 7.5 = 112.50
2 * 3.14 * 7.5 47.1

Cylindrical height of dispenser with lesser liquid soap

4239 4239
-------------------- - 7.5 = ------------ - 7.5 = 90 - 7.5 = 82.50
2 * 3.14 * 7.5 47.1

Cylindrical height of full soap      112.50
Cylindrical height of lesser soap     - 82.50
Difference in height of soap content 30.00