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nika2105 [10]
4 years ago
13

Solve algebraically: Y = x^2 + 5x - 17 Y = x - 5

Mathematics
1 answer:
Ksenya-84 [330]4 years ago
3 0

Answer:

2

Step-by-step explanation:

What you could do is fill in 2 for the equation and y would equal -3 so for the first one it's like

y= 2^2 + 5(2) -17

y= 4 + 10 - 17 which turns into y= -3

In the second y it would be something like

y= 2 - 5 which would equal y= -3

so x=2

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When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year f
MA_775_DIABLO [31]

Answer:

Option D is the correct answer.

Step-by-step explanation:

Initial height = 4 feet

Given that the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

Let the rate of growing each year be g.

After 6 years height of tree = 4 + 6g

After 4 years height of tree = 4 + 4g

At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

That is

                4+6g=4+4g+\frac{4+4g}{5}\\\\4+6g=\frac{20+20g+4+4g}{5}\\\\20+30g=24+24g\\\\6g=4\\\\g=\frac{2}{3}ft/year

Option D is the correct answer.    

8 0
3 years ago
Evaluate each expression when n = 4 and b = 7
alexgriva [62]

Answer:

1. 5  2. 31  3. 55

Step-by-step explanation:

1. 2(4)-3=8-3=5

2. 4(7)+3=28+3=31

3. 3(4)+8(7)-13=12+56-13=56-1=55

4 0
3 years ago
Read 2 more answers
Howard is standing 87 yards from the bottom of a water reservoir. He estimates that the angle of elevation to the top of the wat
nekit [7.7K]
He is 174 yards from the top.

Since we have a 60° angle and a right angle, this is a 30-60-90 triangle.  In these triangles, we can label the sides as t, t√3 and 2t, with t being the side opposite the 30° angle (the smallest side); t√3 being the side opposite the 60° angle (the middle side); and 2t being the hypotenuse (the longest side).

Our 87 yard side is across from the 30° angle, so it is t.

The side we are looking for is the hypotenuse, which would be 2t; 2(87) = 174.
4 0
3 years ago
What is the order from least to greatest?
kenny6666 [7]

Answer:

5/4, 1.3, 1 8/25

Step-by-step explanation:

5/4 is equal to 1 1/4, which is 1.25

1.3 is still 1.3

1 8/25 is equal to 1.32, which is sliglightly greater than 1.3

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3 years ago
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Which of these sentences has the most negative connotation?
Mekhanik [1.2K]
C cheap is considered a pretty bad word
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3 years ago
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