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Svetradugi [14.3K]
4 years ago
9

Are these right ???

Mathematics
1 answer:
sleet_krkn [62]4 years ago
8 0

Yes they are.

Perpendicular means to be at a 90 degree angle from the surface of whatever it is you are referencing to.

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To ride a roller coaster, a visitor must not be less than 58 inches tall.
sattari [20]

Answer:

h≥58

Step-by-step explanation:

h=visitor able to ride

you must be 58 inches to ride

Thus h is greater than or equal to 58

h≥58

4 0
3 years ago
you are a school photographer taking individual and class pictures for 2 classes of 21 students each on average each individual
uysha [10]
  1. Answer: Approximately 146 minutes (or if you need the simplified version the answer is 2 hours and 26 minutes).  Step-by-step explanation: Step 1. Two classes of 21 students. To calculate that you would multiply 21 by 2. 21*2=42 Step 2. So now we know you need 42 individual pictures. If they each take 3 minutes to take you need to multiply 42 by 3. 42*3=126. So now you know it’ll take 126 minutes to take all the individual pictures. Step 3. Now, there are 2 classes of people and it takes 10 minutes to take each class picture. So do calculate that you need to multiply 10 by 2. 10*2=20. So it’ll take 20 minutes to take both class pictures. Step 4. Now we know it’ll take 126 minutes to take all the individual photos and 20 minutes to take the class photos. Now to calculate the total amount of time it’ll take to take all the photos you need to add 20 to 126.  126+20=146. So, it’ll take 146 minutes to take all the photos. Step 5. (You can skip this step if no simplification is needed in your problem) So, we all know there is 60 minutes in an hour so we’ll divide 146 by 60. 146/60=2.43. So, now we know it’ll take 2.43 hours to take all the photos. 2.43 hours is 2 hours and 26 minutes.  I hope this helps!
4 0
3 years ago
Your brother has $2000 saved for vacation. His airplane ticket is $637.
Alinara [238K]

Answer:1367

Step-by-step explanation:Lets assume the amount spent on everything else be "x".

We know total cost can not exceed $2000.

∴ Forming an inequation to find the amount spent on everything else.

⇒  

⇒  

Now, solving it to find x

Subtracting both side by 637

⇒

∴  

Hence, he can spend maximum of $1367 for eveything else.

8 0
3 years ago
Find the x and y for numbers 2 and. 3 thank you
OLEGan [10]

Answer:

(0, 4 ) and (2, - 4 )

Step-by-step explanation:

(2)

3x + 4y = 16 → (1)

- 3x + 2y = 8 → (2)

Adding (1) and (2) term by term will eliminate the x- term

0 + 6y = 24

6y = 24 ( divide both sides by 6 )

y = 4

Substitute y = 4 into either of the 2 equations and solve for x

Substituting into (1)

3x + 4(4) = 16

3x + 16 = 16 ( subtract 16 from both sides )

3x = 0 , then

x = 0

solution is (0, 4 )

(3)

2x - 4y = 20 → (1)

5x + 4y = - 6 → (2)

Adding (1) and (2) term by term will eliminate the y- term

7x + 0 = 14

7x = 14 ( divide both sides by 7 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (2)

5(2) + 4y = - 6

10 + 4y = - 6 ( subtract 10 from both sides )

4y = - 16 ( divide both sides by 4 )

y = - 4

solution is (2, - 4 )

5 0
3 years ago
Graph the function. <br><br> y = -x + x2
strojnjashka [21]
I’ve attached a photo of the graph.

6 0
3 years ago
Read 2 more answers
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