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Alenkinab [10]
4 years ago
8

Help me this is really hard

Mathematics
1 answer:
nirvana33 [79]4 years ago
6 0
1. 2n > 17

n > 7

2. n/5 ≥ 11

n ≥ 55

3. -3y ≤ -18

y ≥ 6

If these are right, please leave a thanks and a rating.
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Find the coordinates of the turning point of y = x^2 + 8x + 17
Amiraneli [1.4K]

Answer:

(-4 , 1)

Step-by-step explanation:

We know that the turning point of any parabola is in its vertex. The x of the vertex can be calculated with the formula:

x = -b/2a

In our case b = 8, a = 1, so:

x = - 8/2 = -4

We plug this value into our original equation and find the y of the vertex:

(-4)^2 + 8(-4) + 17 = 16 - 32 + 17 = 1

Vertex = (-4 ; 1)

6 0
3 years ago
An orchard has 651 orange trees. The number of rows exceeds the number of trees per row by 10. How many trees are there in a row
natima [27]

Answer:

The number of trees in each row is  21.

Step-by-step explanation:

Let us assume the number of trees in each row  = m

So, the number of rows in the orchard = Number of trees in each row + 10

or, total number of trees in each row = (10 +m)

Now, Total number of Trees = Number of Rows x Number of trees in 1 row

⇒ 651  = m (m + 10)

651 = m^2 + 10m\\\implies  m^2 + 10m - 651 =0\\or,   m^2 + 31m  21m - 651 =0\\or, m(m +31) -21(m+31) =0\\\implies (m +31) (m-21) = 0

⇒ (m +31) = 0, or (m-21) = 0

⇒ m= -31, or m = 21

Now, as m = The number of trees in each row, so m ≠ -31

So, m =  21

Hence, the number of trees in each row is m = 21.

8 0
4 years ago
ted has 3/8 tank of gas in his truck. its just enough gas to drive to work twice. how much gas is used for each trip to work?​
Dmitry_Shevchenko [17]

Answer:3/16 of a tank of gas

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve the following expression when a=3 and b = 2 <br>5a^2 - 10b + 9B=​
skelet666 [1.2K]
Explication is 3 minus 2b is 9 because I look it up
3 0
3 years ago
What is the area of this figure? NO LINKS!! part 5​
Tema [17]

Answer:

303 mi

Step-by-step explanation:

18 (24) = 432

9 (16) = 144 - 15 = 129

432 - 129 = 303 mi

Hope this helps!

3 0
3 years ago
Read 2 more answers
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