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tekilochka [14]
4 years ago
9

An equation is shown. 2x^2 -5x-3=0 what values of x make rhe equation true?

Mathematics
1 answer:
olya-2409 [2.1K]4 years ago
3 0
X= -1
Use trial and error method
When you substitute x=-1 you will get 0 as the answer..!
Enjoy your day
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Identify the segments that are parallel, if any, if FDC = GCH
liq [111]

Answer:

B

Step-by-step explanation:

The two lines will never intersect regardless of the distance they go

3 0
3 years ago
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If f(x) is an odd function and the graph of f(x) includes points in Quadrant IV, which statement about the graph of f(x) must be
lapo4ka [179]
Answer is:
It includes points in quadrant II and it doesnt include points in quadrant I

Explanation:

For odd functions a rule is:
f(x) = -f(-x) or in other words
f(x) + f(-x) = 0

Because of this function can be in quadrants I and III or in quadrants II and IV as in pairs...
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4 years ago
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A store sells both cold and hot beverages. Cold beverages, c, cost $1.50, while hot beverages, h, cost $2.00. On Saturday, drink
ra1l [238]

Answer:

The number of hot beverages sold were 45 and the number of cold beverages sold were 180.

Step-by-step explanation:

Let the number of cold  beverages sold be c

And the number of hot beverages sold be h

According to the question:

c=4\times h...

$ 1.5\times c + 2\times h = Sale of any day

Part1:

For Saturday.

The sale is of $360

then

$ 1.5 \times c + $ 2 \times h =$ 360

Part 2:

Following the method of substitution.

And plugging the values of c=4\times h...in equation where the sales of Saturday is given.

1.5\times c + 2\times h =360

1.5\times 4\times h + 2 \times h =360

6\times h + 2\times h= 360

8\times h=360

Dividing both sides with 8.

h=\frac{360}{8}

h=45

Inserting h=45 in c=4 \times h...

we have c=4\times 45 = 180

So the number of hot beverages sold were 45 and the number of cold beverages sold were 180.

6 0
3 years ago
I don't get how to do this
Degger [83]
Alright so 25% of the 32 students scored an A. 25% is equal to 1/4. So just take a fourth of 32 to get your answer, which is 8. 
8 0
3 years ago
Read 2 more answers
-10
Vitek1552 [10]

Answer:

B)   -1

Step-by-step explanation:

This is the equation of a parabola which can be expressed as

y = a(x-h)² + k     (1)

where (h, k) are the coordinates of the vertex which is the minimum or maximum of the graph. Strict definition is where the parabola intersects the line of symmetry ie the line which cuts a shape into half

Parabolas are symmetric around the line of symmetry

Here we see the vertex is at x = 0, y = 9 (0,9) so h=0 and k = 9

Substituting equation (1) we get

y = a(x -0)² + 9 = ax² + 9

To find a all we have to do is choose any point on the parabola, plug its x and y values into the parabola equation above

A convenient point is where the parabola intersects the positive x axis. Here x = 3 and y = 0

Plugging these values we get

0 = a(3)² + 9

a = -9/9 = -1

7 0
2 years ago
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