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kirza4 [7]
3 years ago
13

Giving brainliest please help

Mathematics
1 answer:
ElenaW [278]3 years ago
8 0
You need to picture the graph its a parabola and curves from left to right outward forever the x values on a graph are from left to right and are the domain of a function.
The range is all of the y values (up and down) This will change depending on where your vertex is ( the bottom of your graph). You'll need to find the vertex. There is a handy formula to find the axis of symmetry x= -b/2a  This is the line that runs down the middle of your parabola. When you find x, substitute it into the parabola to solve for y. That will be your lowest point if your parabola is positive.  Since yours doesn't' have a b value the axis of symmetry is 0. and your vertex would be 4. so (0,4) is your lowest point. Since its your lowest point and your parabola is pointing up all of your y values (your range, remember?) will be above this including 4 don't forget that. so your range is y≥ 4. 
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The sides of an oblong are in the ratio of 4:3. The oblong has a length of 12 cm and is increased by a scale factor of 2.5. What
Aleksandr [31]

Answer:

If the scale factor is increased in 2.5, the increased width will be:

  • <u>22.5 cm</u>

Step-by-step explanation:

Remember that an oblong is longer than it is wide, by this reason, the ratio of 4:3 could mean, if we give a number, by each 4 cm in the length, there is 3 cm in the width, in this form, if the oblong has a length of 12 cm, the width is:

  • 4 cm ⇒ 3 cm
  • 12 cm ⇒ x

So:

  • x=\frac{12 *3}{4}
  • x=\frac{36}{4}
  • x=9

Then, the original width is 9 cm, as the scale factor must be increased 2.5, we can multiply the found width to obtain the increased width:

  • Increased width = 9 cm * 2.5
  • <u>Increased width = 22.5 cm</u>

As you can see, <u><em>the increased widt will be 22.5 cm</em></u>.

4 0
3 years ago
Find the value of x
marshall27 [118]

Answer:

x = 22

Step-by-step explanation:

(x+1)+(3x+1) = 4x+2

4x+2=90°

Solve for x:

4 x + 2 = 90

Subtract 2 from both sides:

4 x + (2 - 2) = 90 - 2

2 - 2 = 0:

4 x = 90 - 2

90 - 2 = 88:

4 x = 88

Divide both sides of 4 x = 88 by 4:

(4 x)/4 = 88/4

4/4 = 1:

x = 88/4

The gcd of 88 and 4 is 4, so 88/4 = (4×22)/(4×1) = 4/4×22 = 22:

Answer: x = 22

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Answer:

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 ————————————————————————

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Step-by-step explanation:

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harkovskaia [24]

Answer:

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Step-by-step explanation:

you divide 144 by 6 to get 24.

5 0
2 years ago
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CaHeK987 [17]

Answer:

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