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ikadub [295]
3 years ago
7

What is the value of the expression: -9.2 + (-7)?

Mathematics
1 answer:
HACTEHA [7]3 years ago
8 0

Answer:

-16.2

Step-by-step explanation:

-9.2+(-7)=-16.2

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Which equation represents a parabola that opens upward, has a minimum at x = 3, and has a line of symmetry at x = 3?
densk [106]

Answer:

A.\ y = x^2 - 6x + 13 is the correct answer.

Step-by-step explanation:

We know that vertex equation of a parabola is given as:

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

where (h,k) is the vertex of the parabola and

(x,y) are the coordinate of points on parabola.

As per the question statement:

The parabola opens upwards that means coefficient of x^{2} is positive.

Let a = +1

Minimum of parabola is at x = 3.

The vertex is at the minimum point of a parabola that opens upwards.

\therefore h = 3

Putting value of a and h in the equation:

y = 1(x-3)^2+k\\\Rightarrow y = (x-3)^2+k\\\Rightarrow y = x^2-6x+9+k

Formula used: (a-b)^2=a^{2} +b^{2} -2\times a \times b

Comparing the equation formulated above with the options given we can observe that the equation formulated above is most similar to option A.

Comparing y = x^2 - 6x + 13 and y = x^2-6x+9+k

13 = 9+k

k = 4

Please refer to the graph attached.

Hence, correct option is A.\ y = x^2 - 6x + 13

3 0
3 years ago
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Use the Distributive Property to find the Product 4 and 2/5 × 10
arlik [135]
Distributive Property ( A number, n, is multiplied to the expression in parentheses)

4( \frac{2}{5}  \times 10) =  \\ 4( \frac{20}{5} ) =  \\ 4(4) = 16
5 0
3 years ago
Again like normal. first is brainliest.
Harlamova29_29 [7]

Answer:

d.

Can you give me brainliest this time plz, I answered first

Step-by-step explanation:

5 0
3 years ago
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A 16 N force is applied to an object and 96 J of work is done. How far was the object moved?
Montano1993 [528]
Hello,

T=F*x==>x=T/F=96/16=6 (m)

T is the word (travail in french)
F is the force applied
x is the deplacement.

3 0
4 years ago
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What does the f(n - 1) represent?
leonid [27]

I'm assuming that you are talking about sequences <3

In the context of a recursive formula where we have "n-1" in sub-index of "a", you can think of "a" as the previous term in the sequence. In the context of an explicit formula like "-5+2(n-1)" "n-1" represents how many times we need to add 2 to the first term to get the nth term.

Dw if you don't understand, sequences and functions isn't an easy topic

3 0
3 years ago
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