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Sloan [31]
3 years ago
8

How many intervals of 1/2 are between -1 and 2?

Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0
There are 7 intervals of 1/2 between -1 and 2.

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John says that 0.5y for y=1.4 is 0.7<br> Is he correct? Explain.<br> 17 points
Alona [7]
John is correct because 0.5 is equal to one half and multiplying something by its half is just same as dividing something in two and half of 1.4 is 0.5

(sorry if it's too long feel free to shorten it)
7 0
3 years ago
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The graph is<br> function because it is symmetrical about the
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Answer:

Functions can be symmetrical about the y-axis, which means that if we reflect their graph about the y-axis we will get the same graph. ... These are two types of symmetry we call even and odd functions.

Step-by-step explanation:

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3 years ago
two bicycle riders start a race at the same time. the function f(x) and g(x) give the distance in miles that each rider has trav
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4 0
3 years ago
What is the vertex form, f(x) = a(x − h)2 + k, for a parabola that passes through the point (1, −7) and has (2, 3) as its vertex
kondaur [170]

Answer:

Vertex form: f(x) = -10(x − 2)^2 + 3

Standard form: y = -10x^2 + 40x - 37

Step-by-step explanation:

h and k are the vertex coordinates

Substitute them in the vertex form equation:

f(x) = a(x − 2)^2 + 3

Calculate "a" by replacing "f(x)" with -7 and "x" with 1:

-7 = a(1 − 2)^2 + 3

Simplify:

-7 = a(1 − 2)^2 + 3

-7 = a(-1)^2 + 3

-7 = a + 3

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Replace a to get the final vertex form equation:

f(x) = -10(x − 2)^2 + 3

Convert to standard form:

y = -10(x − 2)^2 + 3

Expand using binomial theorem:

y = -10(x^2 − 4x + 4) + 3

Simplify:

y = -10x^2 + 40x - 40 + 3

y = -10x^2 + 40x - 37

6 0
3 years ago
Shirley has a collection of 50 stamps and adds 4 stamps daily to her collection. model this situation as a function of number of
kompoz [17]
Stamps - S

S= 50+ 4d

Sorry if I’m wrong
4 0
2 years ago
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