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Ierofanga [76]
3 years ago
11

Can someone please help me ASAP​

Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0

Answer:

i) 30 minutes

ii) 50 km/h

Step-by-step explanation:

Part 1:

1540 - 1600 is pnt 1 to pnt 2; 1 km per hour. (20 minutes)

15km at  90km/h = 10 min

20 + 10 = 30 minutes

Part 2:

10 km/h + 90 km/h = 100km/h

Average = /by number of factors;

100 km/h  / 2 = 50 km/h (Average journey speed)

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Answer:

72

Step-by-step explanation:

Well to make life easier just simplify the fraction

80/100 could be simplified to 4/5

4/5*90 is 72

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3 years ago
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daser333 [38]
So you want to solve for x?

It would be nice if this would easily factor:
(-4x + 5)(2x +1)  = 0    This will not work!

So you need to use the quadratic formula:
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x = \frac{-b+/-  \sqrt{b^{2}-4ac} }{2a}

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3 years ago
What is the height, x, of the equilateral triangle?
e-lub [12.9K]

Using the Pythagorean Theorem, the height of the equilateral triangle is given by:

A. h = 7\sqrt{3} inches.

<h3>What is the Pythagorean Theorem?</h3>

The Pythagorean Theorem relates the length of the legs l_1 and l_2 of a right triangle with the length of the hypotenuse h, according to the following equation:

h^2 = l_1^2 + l_2^2

For this problem, we have that:

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Hence the height is found as follows:

h^2 + 7^2 = 14^2

h = \sqrt{147}

h = \sqrt{49 \times 3}

h = 7\sqrt{3} inches.

More can be learned about the Pythagorean Theorem at brainly.com/question/654982

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Andreyy89

Answer:

1

Step-by-step explanation:

There is no lcm other than 1 between these 3 numbers

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10 factors: 10,1,5,2

16 factors:16,1,4,4,8,2

All of these have the number one in common, hence the answer

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3 years ago
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