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Bond [772]
3 years ago
7

which statement is always true A. the sum of two irrational numbers is rational. B. the product of a rational and irrational num

ber is rational. C. the sum of two rational numbers is irrational D. the product of two rational numbers is rational
Mathematics
1 answer:
fomenos3 years ago
4 0
The answer is D hope this helps
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Pls help me so I can pass
Maru [420]

Answer: John Hancock Center is faster

Step-by-step explanation:

If the equation is y=30x and x represents seconds then multiply 30 and 60 to get the amount of feet travelled per minute which is 1800. If 1800>1400 then John Hancock Center has a faster elevator rate.

7 0
3 years ago
Read 2 more answers
Perform the following calculations: (-16) - (-42)
leva [86]

Answer:

26

Step-by-step explanation:

When we subtract a negative it is like adding

(-16) - (-42)

(-16) + (42)

Re arranging the order

42 -16

26

6 0
3 years ago
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3) Veronica traveled 126 miles on 3 gallons of gas. On another trip she traveled 210 miles on 5 gallons of gas. Find the unit ra
Goshia [24]
The answer is 42 mpg, all you need to do is divide 126/3 or 210/5 and they both equal 42.
8 0
3 years ago
What a story problem to represent 6÷1/5
stira [4]
Their were six slices of pie left, and then john took 1/5 of them. how much pie is left?
7 0
3 years ago
Read 2 more answers
A and B solve please
ASHA 777 [7]

Answer:

a) $7.27344

b) 263.974 hours

Step-by-step explanation:

a)

+) 1 day = 24 hours

+) The cost for 1000 watts each hour is $0.05051 so that each hour use of 1 watt costs: $0.05051 / 1000 = $0.00005051

+) Each hour, each electric heater uses 1200 watts costs: $0.00005051  x 1200 = $0.060612

=> In 24 hours, to heat each electricity heater costs: $0.060612 x 24 = $1.454688

=> In 24 hours, to heat 5 electricity heaters costs: $1.454688 x 5 = $7.27344

<em>So that it costs $7.27344 to heat her house for 1 day</em>

<em />

b)

As calculated, the cost to use 1 watt in one hour is $0.00005051

=> The cost to use 75 watts in one hour is: $0.00005051 x 72 = $0.00378825

Assume that the hours of using 72 watts to cost $1 is x (hour)

So that: $0.00378825 * x = $1

=> x = 1/ 0.00378825= 263.974 hours

<em>It takes 263.974 hours for a 75-watt lightbulb to stay on to result in $1 electricity charges</em>

<em />

5 0
3 years ago
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