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dolphi86 [110]
2 years ago
9

Someone please help only got 2 hrs left to do 50 questions I don’t understand if you can help me with all of them please tell me

Mathematics
1 answer:
PolarNik [594]2 years ago
8 0
90 degrees clockwise is your answer.
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If a car with an average speed of 40 miles per hour drives for 45 minutes how far will it have gone
REY [17]

Answer: 30\ miles

Step-by-step explanation:

The average speed of the car is 40 miles per hour:

V=40\ \frac{mi}{h}

The car drives for 45 minutes:

t=45\ min

Since 1 hours has 60 minutes, we can convert the time from minutes to hours:

(45\ min)(\frac{1\ h}{60\ min})=0.75\ h

Knowing these values, we can use the following formula for calculate the distace "d":

d=V*t

Therefore, substituting values into the formula, we get:

d=(40\ \frac{mi}{h})(0.75\ h)\\\\d=30\ mi

3 0
3 years ago
Classify each system of equations as having a single solution, no solution, or infinite solutions.
mina [271]
To find what the answer is for this problem, we need to find out whether each of them have infinite, no, or single solutions. We can do this individually.

Starting with the first one, we need to convert both of the equations into slope-intercept form. y = -2x + 5 is already in that form, now we just need to do it to 4x + 2y = 10.

2y = -4x + 10
y = -2x +5

Since both equations give the same line, the first one has infinite solutions.

 Now onto the second one. Once again, the first step is to convert both of the equations into slope-intercept form. 

x = 26 - 3y becomes
3y = -x + 26
y = -1/3x + 26/3 

2x + 6y = 22 becomes
6y = -2x + 22
y = -1/3 x + 22/6

Since the slopes of these two lines are the same, that means that they are parallel, meaning that this one has no solutions. 

Now the third one. We do the same steps. 

5x + 4y = 6 becomes
4y = -5x + 6
y = -5/4x + 1.5
 
10x - 2y = 7 becomes
2y = 10x - 7
y = 5x - 3.5

Since these two equations are completely different, that means that this system has one solution.

Now the fourth one. We do the same steps again. 

x + 2y = 3 becomes
2y = -x + 3
y = -0.5x + 1.5

4x + 8y = 15 becomes
8y = -4x + 15
y = -1/2x + 15/8

Once again, since these two lines have the same slopes, that means that they are parallel, meaning that this one has no solutions. 

Now the fifth one. 

3x + 4y = 17 becomes
4y = -3x + 17
y = -3/4x + 17/4

-6x = 10y - 39 becomes
10y = -6x + 39
y = -3/5x + 3.9

Since these equations are completely different, there is a single solution. 

Last one!

x + 5y = 24 becomes
5y = -x + 24
y = -1/5x + 24/5

5x = 12 - y becomes
y = -5x +12

Since these equations are completely different, this system has a single solution. 
8 0
3 years ago
1000+1000= please and thank you
Nitella [24]

Answer:

2000

Step-by-step explanation:

1+1=2

then add the zeros

2000

5 0
3 years ago
Read 2 more answers
which of the following is the best definition of “social justice”? the idea that the law is sacred and always applies to everyon
gulaghasi [49]
Social justice can be defined as the idea that the law is sacred and always applies to everyone in the exact way.
7 0
3 years ago
Tara’s jewelry box contains two gold bracelets and two silver bracelets. Tara randomly choose two bracelets. What is the probabi
yan [13]

Answer: well its 25% i think because if you take them each one all chances are 25% bacause bur it would be 50%/50% because to are the same but the chances of pulling the not that sames ones would also be a 50/50

I REALLY DONT KNOW IF IM RIGHT SO IM SORRY IF NOT IM DUMB

7 0
3 years ago
Read 2 more answers
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