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kow [346]
4 years ago
14

Y= -1.7043x^2 +124.38x -358.51

Mathematics
1 answer:
stiks02 [169]4 years ago
4 0

Answer:

X - Y = 3.0062,

X -Y = 69.973

Step-by-step explanation:

Given equation is

-1.7043x² + 124.38x - 358.51 = y

This equation can be written as

x² - 72.98x + 210.35

Or, x² - 69.973x - 3.0062x + 210.35

Or, x(x - 69.973) - 3.0062(x - 69.973)

So, (x - 69.973) (x - 3.0062)

Now this two factors are equal to y

∴ x - 69.973 = y    and  x - 3.0062 = y

Hence X - Y = 69.973    and  X - Y = 3.0062      Answer

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bija089 [108]
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6 0
3 years ago
An observer, whose eyes are 1.98 m above the ground, is standing 39.2 m away from a tree. The ground is level, and the tree is g
lozanna [386]

Answer:

The tree is 16.25 m tall.

Step-by-step explanation:

Attached is a diagram that better explains the problem.

From the diagram we see that the distance between the top of the tree and the line of sight of the observer is x.

To find the height of the tree, we need to first find x and then add it to the height of the observers line of sight from the ground.

Using SOHCAHTOA trigonometric function:

tan(20) = x/39.2

=> x = 39.2 * tan(20)

x = 39.2 * 0.364

x = 14.27m

Hence, the height of the tree is:

(14.27 + 1.98)m

16.25m

The tree is 16.25 m tall.

5 0
3 years ago
Joseph needs to find the quotient of 3.216 ÷8. In what place is the first digit in the quotient?
ExtremeBDS [4]
If you do long division you will see that 8 cannot go into 3 it will go into 3.2 so the first digit will be in the tenths place 0.4... no need to finish the division since all the question asks is the place of the first digit

6 0
4 years ago
Steps to put this in scientific notation<br><br> Stuck Need Help
Step2247 [10]
2.44141 x 10^26 hope that helps
5 0
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Andrew owns 3 fewer DVDs than Paul. Let K represent number of Paul's DVDs. Write the expression that can be used to find the num
Julli [10]
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5 0
3 years ago
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