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Agata [3.3K]
3 years ago
8

Help me with this problem please!

Mathematics
1 answer:
Ann [662]3 years ago
5 0

Answer:

A.  False - The slope of line J is 20.

B.  False - The slope of line K is 12.5.

C.  True - Since the slope is 20.

D.  False - Kayla earns 12.50/hour.

E.  True - Since Kayla earns less per hour than Julie, she has to work more hours to earn the same amount.

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Debbie launched a toy rocket off a hill next to Lake Lakewood. The height h of the rocket in feet above the surface of the lake
jenyasd209 [6]

Answer:

t = 8.69 s

Step-by-step explanation:

The height h of the rocket in feet above the surface of the lake can be modeled by :

h=340+100t-16t^2

Let we need to find the time to reach the ground. When it reach the ground, h = 0

340+100t-16t^2=0

We need to find the value of t.

t = 8.69 s and -2.45 s

Neglecting negative value,

t = 8.69 s

Hence, it will take 8.69 s to reach the ground.

5 0
3 years ago
Ivan drove 871 miles in 13 hours. At the same rate how many miles will he drive in 9 hours( HELP)
Tasya [4]

Step-by-step explanation:

speed = distance/time

speed = 871÷13

speed = 67 mph

distance = speed x time

distance = 67mph X 9hrs

distance = 603 m

7 0
3 years ago
Read 2 more answers
3b^2-4b+1=0 solve each equation with the quadratic formula
hjlf
First multiply 3 and the 1
Then simplify b^2-4b+3=0
Then divide both numbers by 3 (b-3/3)(b-1/3)=0
If it doesn’t go in even like the second term then bring it before the B
Then equal both terms to 0 and solve

7 0
4 years ago
We choose a 4-digit number randomly. What is the probability that all its digits are even? help asap
Vlad1618 [11]

Answer:

It's very simple. In 4 decimal digits there are 10,000 (0000 to 9999) possible values. The odds of any one of them coming up randomly is one in 10,000. A specific "4 digit number" would have 1/9000 chance, since there are 9000 4 digit numbers (1000-9999).

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
May someone help me with this pls
Zielflug [23.3K]

Answer:

  • PQRS - a parallelogram
  • GHJI - not necessarily
  • RSUT - a parallelogram
  • ABDC - a parallelogram

Step-by-step explanation:

A parallelogram has these characteristics that can be useful for answering this question:

  • opposite sides are the same length
  • opposite sides are parallel
  • the diagonals bisect each other

__

<h3>PQRS</h3>

Opposite sides are the same length: a parallelogram

__

<h3>GHJI</h3>

Two isosceles triangles share a base segment. Not necessarily a parallelogram.

__

<h3>RSUT</h3>

The diagonals bisect each other: a parallelogram

__

<h3>ABDC</h3>

Opposite sides are parallel: a parallelogram. We know BD║AC from the converse of the alternate interior angles theorem. AB and CD are marked parallel.

3 0
2 years ago
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