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3 years ago

How do you express 45mins as percentange of 1hr30mins

Mathematics

2 answers:

Nonamiya [84]3 years ago

5 0

45 minutes is half of an hour and 30 minutes

Shalnov [3]3 years ago

3 0

Okay, so make I think maybe. 45m =0.45 of a hour and a half. “45=0.45(90)” maybe I am not sure sure

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Jose rented a truck for one day. There was a bose fee of $19.95, and there was an additional charge of 84 cents for each mile dr

nevsk [136]

Answer:

Step-by-step explanation:

Let the number of miles = x

C ost = Base + 0.84x

Cost = 220.71 dollars

Base = 19.95

220.71 = 19.95 + 0.84x Subtract 19.95 from both sides

220,71 - 19.95 = 0.84 x Combine

200.76 = 0.84x Divide by 0,84

200.76/0.84 = x

x = 239 miles.

Remark: The trick to this question is to make sure that total Cost, the Base amount, and cost / mile are all in dollars. Don't mix and match.

5 0

2 years ago

Which statement is true about ∠JXM and ∠NXP? a.∠JXM and ∠NXP are complementary. b.∠JXM and ∠NXP are vertical. c.∠JXM and ∠NXP ar

xenn [34]

Answer:

Incomplete questions

Check attachment for correct question.

The correct answer is

A. ∠JXM and ∠NXP are complementary

step explanation:

line JP is a straight line and sum of angle on a straight line is 180°.

There are three angles on this straight line JP which are ∠JXM, ∠NXP and ∠MXN

Note: from the attachment, it is shown that ∠MXN is a right angle i.e. 90°.

Then, sum of angle on this line is 180°.

∠JXM + ∠NXP + ∠MXN = 180°

∠JXM + ∠NXP + 90° = 180°

∠JXM + ∠NXP = 180° — 90°

∠JXM + ∠NXP = 90°

From the definition of complementary angles : Two Angles are said to Complementary if their sum is 90° (a Right Angle).

They don't have to be next to each other, just so long as the sum is 90 degrees.

Then, since ∠JXM + ∠NXP add up to 90°, it shows that ∠JXM and ∠NXP are complementary

So the correct option is A

5 0

3 years ago

Read 2 more answers

Solve. (x-4)²=5<br> PLEASE HELP

goldenfox [79]

Answer:

Step-by-step explanation:

(x-4)^2=5

(x-4)(x-4)=5

x(x-4)-4(x-4)=5

distribute

x^2-4x-4x+16=5

combine like terms

x^2-8x+16=5

move terms to the left and combine

x^2-8x+11=0

use the quadratic formula and simplify

x=-(-8)+/-2 to the square roots of 5 over 2

separate and solve

x=4+ square root of 5

x=4- square root of 5

ANSWER: x=4+/- square root of 5

8 0

2 years ago

According to general equation for conditional probability, if P(A^B) = 2/3 and P(B) = 3/4, what is P(A|B)?

Alexxx [7]

Answer:

Step-by-step explanation:

5 0

3 years ago

What's the answer to this question

frutty [35]

Step-by-step explanation:

there are several things to be considered to solve this.

the strategy is to caucuses the volume of the full "box", and then to deduct the 3-dimensional triangle that is "cut off" from the oil.

then we know the volume of the pool.

next step is to calculate the volume of a "box" with the same layout but is only 20 cm deep.

then we know how much volume can be pumped out in 30 minutes.

and then we divide the whole volume by that small volume to see how many 30-minues units are needed to empty the whole pool.

and then we transform the 30- minutes units into actual minutes or hours.

so, let's begin :

the whole box's volume is

2×1×1.4 = 2.8 m³

the volume of the 3-D triangle we need to subtract is the area of the triangle × width of the pool (this pool width is the height of the 3-D triangle).

2×(1.4 - 0.6) × 1 / 2 = 2×0.8 × 1 / 2 = 1.6/2 = 0.8 m³

so, the volume of the pool is

2.8 - 0.8 = 2 m³

now, how much volume can the pump eliminate in 30 minutes ?

the content of a box

1×2×0.2 = 0.4 m³

as 20 cm = 0.2 m

so, the pump pumps out 0.4 m³ in 30 minutes.

and we need to empty 2 m³.

that means we need

2 / 0.4 = 5

30-minues units = 5×30 = 150 minutes = 2.5 hours.

Colin has to wait 2.5 hours (150 minutes) to empty the complete pool.

6 0

3 years ago