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dolphi86 [110]
4 years ago
15

F(x) = -3x2 + 9x – 8 Find f(5)

Mathematics
1 answer:
slava [35]4 years ago
3 0

Answer:

- 38 .......... is right

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A tower casts a shadow 11 feet long the distance from the top of the tower to the end of the the shadow is 61 feet how many feet
Jobisdone [24]
This is very easy!! I have attached a picture I have drawn if you are a visual learner... well, everything else like computations is here. 
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This is the PYTHAGOREAN THEOREM!!
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If you don't know, it says that the lengths of the legs squared added together all equal the hypotenuse squared in a right triangle!!
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And if you want to know why the "triangle" has a right angle... well,  are towers slanted? I mean, other than the Leaning Tower of Pizza. I mean Pisa.
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So... we plug it in!!
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Formula: a^2 + b^2 = c^2.
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Plug it in: 11^2+ 61^2 = c^2
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c^2 = 3842.
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So now what?
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SQUARE ROOT OF EVERYTHING!!
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c = <span>√3842.
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So? c = approximately 61.984.
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Hope I helped!!</span>

8 0
3 years ago
Solve -5(y+5)&gt;45 what is y
Aleonysh [2.5K]

Answer:

y<−14 is the answer

Step-by-step explanation:

5 0
3 years ago
Two friends shop for fruit. Jackson buys a watermelon for $5.25 and 4 pounds of cherries. Tim buys a pineapple for $1.85 and 2 p
solmaris [256]

Answer:

This is not a question.

Step-by-step explanation:

It is not a question.

6 0
3 years ago
Read 2 more answers
Simplify the expression by combining like terms.2x + 4y + 6 + 2y - 5 + 3x
zlopas [31]

Answer:

Step-by-step explanation:

Here is the workings

2x+4y+6+2y-5+3x  combine like terms

2x+3x+4y+2y+6-5

Step 2

2x+3x+4y+2y+6-5   Add the similar exponents

5x+4y+2y+6-5

5x+6y+6-5

Step 3

5x+6y+6-5  Add and subtract

Your answer would be 5x+6y+1

7 0
3 years ago
(3) 5th Grade Math Questions
Finger [1]
1. 13/15
2. 1595.25
3. 462
I hope it helps.
5 0
3 years ago
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