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MrMuchimi
3 years ago
8

PLEASE HELP ASAP 25 POINTS

Mathematics
2 answers:
dimaraw [331]3 years ago
4 0

Answer:

the answer is d

Step-by-step explanation:


Tresset [83]3 years ago
4 0

Answer:

d

Step-by-step explanation:

To see if it is a solution substitute x in and see if it works for y

a.  y>= x +2

-4 >= -2+2

-y> = 0 No


b y <= x+2

  -4<=-2+2

-4 <0  True

keep going

y<= x-3

-4 <= -2-3

-4<=-5

No


c  y> x+2

  -4 >-2+2

-4 > 0

True

y< x-3

-4 <-2-3

-4 <-5

NO


d y <= x+2

-4 <= -2+2

-4<=0

True

-4 >= -2-3

-4>=-5


This is the solution

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On a map with a scale of 1:24,000, a measured distance of one inch represents an actual distance of ___ feet.
dem82 [27]
The answer:  " 2,000 (feet) " .
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Note:  12 in.  = 1 ft. (exact conversion) ;

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5 0
3 years ago
two brothers marco and fernando are training for a marathon marco runs at a rate of 6miles per hor. Fernando funs at at a rate o
satela [25.4K]
We know that
speed=distance/time
solve for time
time=distance/speed

in this problem
<span>Marco runs at a rate of 6 miles per hour. 
</span><span>Fernando funs at a rate of 7.2 miles per hour
Difference=7.2-6=1.2 miles/hour
so
speed=1.2 miles/hour
distance=0.3 miles
time=?
</span>time=distance/speed-----> 0.3/1.2-----> 0.25 hour-----> 0.25*60=15 minutes
<span>
the answer is
0.25 hour (15 minutes)

Alternative Method
Let 
x---------> Fernando's distance when Marco is 0.3 miles apart

</span>Fernando funs at a rate of 7.2 miles per hour
<span>for distance =x
time=x/7.2------> equation 1

</span>Marco runs at a rate of 6 miles per hour. 
for distance=x-0.30
time=(x-0.30)/6------> equation 2

equate equation 1 and equation 2
 7.2*(x-0.3)=6x-----> 7.2x-2.16=6x
7.2x-6x=2.16------> x=2.16/1.2-------> x=1.8 miles

time=x/7.2-----1.8/7.2=0.25 hour
6 0
3 years ago
The sum of the two angles of a triangle is 80 degree and their difference is 20 degree. find all the angles of the triangle.
Norma-Jean [14]

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Add 20° to find the bigger angle:

20 + 30 = 50°


<u>One of the angle is 30° and the other angle is 50°</u>


Given that the sum of the two angles is 80°

⇒ Third angle = 180 - 80 = 100°


Answer: The 3 angles are 30° , 50° and 100°

3 0
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Step-by-step explanation:

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4 0
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