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Masja [62]
3 years ago
5

Help plz 20 pts TOTAL 10 pts each

Mathematics
1 answer:
motikmotik3 years ago
5 0

Answer:

This question needs a step to step long explanation.

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The axis of symmetry for a function in the form f(x) = x2 + 4x − 5 is x = −2. What are the coordinates of the vertex of the grap
Studentka2010 [4]

Answer:

D) (-2,-9)

Step-by-step explanation:

<u>Vertex Form of a Vertical Parabola:</u>

y=a(x-h)^2+k

Vertex -> (h,k)

Axis of Symmetry -> x=h

Vertical Scale Factor -> a

  • To turn f(x)=x^2+4x-5 into vertex form, we need to complete the square on the right side
  • Therefore, if f(x)=0, then 0+9=x^2+4x-5+9 completes the square on the right side
  • This becomes 9=(x+2)^2
  • This means that our function in vertex form is f(x)=(x+2)^2-9

Therefore, the vertex of the graph is (h,k)=(-2,-9).

3 0
3 years ago
Please answer this correctly without making mistakes
victus00 [196]

Answer:

Question 2

Step-by-step explanation:

2) The time when she woke up was -  3° C

During nature walk, temperature got 3° C warmer than when she woke up.

So, temperature during nature walk = - 3 + 3 = 0° C

3 0
3 years ago
Eric and Stephanie took their younger sister Melissa to pick apples. Eric picked 4 times as many apples as
vodka [1.7K]

Answer:

Melissa picked 16 apples

Step-by-step explanation:

(Eric and Stephanie) 160 divided by 10 (I put ten because I add 6 and 4)

Which will equal 16.

Hope this helps ~~~~ :)

4 0
4 years ago
Read 2 more answers
Solve the equation. 3x+12 = 5x-21
almond37 [142]
3x+12=5x-21
-5x       -5x
-2x + 12 = -21
         -12    -12
-2x=-33
 x = 16.5
4 0
3 years ago
What is 18090.9 in scientific notation
kramer

Answer:

= 1.80909 × 104

(scientific notation)  (MOST COMMON)

Step-by-step explanation:

= 1.80909 × 104

(scientific notation)

= 1.80909e4

(scientific e notation)

= 18.0909 × 103

(engineering notation)

(thousand; prefix kilo- (k))

= 18090.9

(real number)

Please mark this as brainliest, it would help a lot

7 0
3 years ago
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