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MariettaO [177]
3 years ago
15

5.8 • 10^1 - 7.4 • 10^0 Answer in scientific notation please

Mathematics
1 answer:
Verizon [17]3 years ago
4 0
5.06X10^1

hope this helps
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How to do this in a 6th grade way
il63 [147K]

Answer:

4 2/3 - 1 2/3 and just keep doing that until you get to 0 it would take 3 days

Step-by-step explanation:

4 2/3 - 1 2/3=3

3- 1 2/3= 1 1/3

1 1/3- 1 2/3 = -1/3

6 0
3 years ago
Expand.<br><br>Your answer should be a polynomial in standard form.<br><br>(x-1)(x+4)=
Montano1993 [528]

Answer:

X^2+3x-4

Step-by-step explanation:

This is the answer

8 0
3 years ago
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hey, can someone please double check these questions for me / or help me solve them if they are incorrect? thank you U-U ​
zzz [600]

Question 11

The directrix is a horizontal line, which means the parabola opens either upward or downward. In this case, it opens downward. This is because all answer choices have a negative leading coefficient. Also, it's because the focus is below the directrix.

For vertically opening parabolas, we use this form

4p(y-k) = (x-h)^2

where (h,k) is the vertex and p is the focal distance, aka the distance from the vertex the focus. To find (h,k), we start at the focus (0,-4) and move directly up until we reach the directrix y = 4. We'll arrive at (0,4). The midpoint of (0,-4) and (0,4) is (0,0) which is the vertex's location. So (h,k) = (0,0).

Note that in moving from (0,-4) to (0,4) is a span of 4 units. So this is the value of p.

Plug h = 0, k = 0, p = 4 into the equation mentioned and solve for y

4p(y-k) = (x-h)^2

4*4(y-0) = (x-0)^2

16y = x^2

y = (1/16)x^2

The only adjustment we need to make is to change the 1/16 to -1/16 so that the parabola opens downward.

<h3>Answer:  Choice D.  y = -(1/16)x^2</h3>

===============================================

Question 3

The given equation is in the form y = ax^2+bx+c

In this case,

  • a = 2
  • b = 4
  • c = 3

Let's compute the x coordinate of the vertex h

h = -b/(2a)

h = -4/(2*2)

h = -1

This h value is plugged into the original function to find k

f(x) = 2x^2+4x+3

f(-1) = 2(-1)^2+4(-1)+3

f(-1) = 1

We find that h = -1 and k = 1 pair up together. In short, (h,k) = (-1,1) is the vertex.

<h3>Answer: Choice B.  (-1,1)</h3>
8 0
2 years ago
Which set of three angles could represent the interior angles of a triangle?
ratelena [41]

The 3 angles need to equal 180 when added together:

A) 49 + 59 +72 = 180

The others do not equal 180

8 0
3 years ago
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Please help me out ASAP
sesenic [268]

Answer:

26^9

Step-by-step explanation:

26^1 *26 ^8\\=26^{1+8} \\=26^{9}

8 0
3 years ago
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