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3 years ago

Help me with this problem? GIVING BRAINLIEST!!

Mathematics

2 answers:

juin [17]3 years ago

4 0

Answer:

Speed = Distance/time in km/h

a) 18 feet in 20 minutes

0.0054864 km/0.333333hours

=0.01645921645 km/h

b) 90 feet in 2.5 hours

0.027432km/2.5

=0.0109728 km/h

c) 20 yards in 1.5 hours

0.018288km/1.5

=0.012192 km/h

d) 3 2/3 yards in 15 minutes

0.003352800000003048km/0.25hours

=0.0134112

So I think its safe to say that A is the fastest in comparison

agasfer [191]3 years ago

4 0

Convert all to common units i'll do feet and minutes
A. 18 ft in 20 minutes
B. 90 feet in 150 minutes
C. 60 feet in 90 minutes
D. 11 feet in 15 minutes

18/20 = .9
90/150 = .6
60/90 = 2/3
11/15 = 7.33333
A is the fastest

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5^7 ''''''''=______ 5^4 a] 5^11 b] 15 c] 5^3

Mariulka [41]

The answer is A 5^11 I hope that's right

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4 years ago

Is (0,0) a solution to 6x - 7y > 20 please include the steps!

leonid [27]

Answer:

No.

Step-by-step explanation:

To determine if (0,0) is a solution to the inequality, substitute 0 for x and 0 for y and check to see. Thus:

$6x-7y>20$

Substitute 0 for x and 0 for y:

$6(0)-7(0)\stackrel{?}{>}20$

Multiply:

$0-0\stackrel{?}{>}20$

Subtract:

$0\not>20$

So, (0,0) is not a solution.

And we're done!

8 0

3 years ago

Read 2 more answers

If the sin 90° = 1, then the cos 0° = _____. (1 point)

Cloud [144]

sin 90° = 1

cos 0° = 1

There's a simple formula : sin θ = cos (90°- θ) or cos θ = sin (90°- θ) 

So : cos 0° = sin (90° - 0°) = sin 90° = 1

7 0

4 years ago

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What is the function rule of (1,30) (2,35) (3,40) (4,45)?

stepan [7]

$\bf \begin{array}{ccll}
x&y\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&30\\
2&35\\
3&40\\
4&45\\
a&5(a)+25
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if you have already covered slopes, you could also get it that way, in fact is simpler that way.

8 0

3 years ago

How to answer this problem

tangare [24]

<2= 30 degrees since its vertical to the 4th angle.
<1=150 degrees
<3=150 degrees

since angle 3 and the 4th angle are supplementary, which means both angles equal 180 degrees, angle 3 equals 150 degrees.

since angle 3 is vertical to angle 1 it's also 150 degrees since they're congruent.

4 0

4 years ago