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sammy [17]
3 years ago
7

If y = x² + 2x + 3, find the value of y when x = -1

Mathematics
1 answer:
BARSIC [14]3 years ago
5 0

Answer:

y = 2

Step-by-step explanation:

Given

y = x² + 2x + 3 ← substitute x = - 1

y = (- 1)² + 2(- 1) + 3 = 1 - 2 + 3 = 2

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Which sets of three numbers could represent the lengths of the sides of a right triangle?
Sonja [21]

Answer:

The Correct Answer Is B

Step-by-step explanation:

To answer this problem, we use the Pythagorean theorem which states that the square of the hypotenuse or the longest side is equal to the sum of the squares of the legs. Hence trying each option, we verify whether the dimensions are true to the right triangle theorem. In this case, the answer is B.

Hope This Answer Helps You

8 0
2 years ago
Write the equation of the line with a slope of 3/4 and a y-intercept of -7 in slope - intercept and point -slope form.
marta [7]

slope intercept:

y=3/4x-7

point slope form:

I used the y intercept (0,-7) as a point to plug into point slope form.

y+7=3/4(x-0)

6 0
3 years ago
A train traveled at a constant rate of f feet per second. how many feet did it travel in x minutes? (a) 60f x (b) fx 60 (c) x 60
sdas [7]

Distance travelled by train in x minutes is equal to 60fx feet as per given constant rate of f feet per second.

As given in the question,

Train travelled at a constant rate f feet per second

Let d be the distance travelled by train in x minutes

1 second =f feet

60 seconds = (60f) feet

1 minute = (60f) feet

x minutes = (60fx)feet

Therefore ,distance travelled by train in x minutes is equal to 60fx feet

as per given constant rate of f feet per second.

Learn more about distance here

brainly.com/question/15172156

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8 0
1 year ago
Help? Luis has saved $15. He doubles the amount he saves each week. Does this represent an exponential function? Choose the corr
lozanna [386]

Answer:

1). Does Not

2). Ratio

Step-by-step explanation:

According to the Question,

Given that, Luis has saved $15. He doubles the amount he saves each week.

  • This DOES NOT represent an exponential function, because his savings increase by a constant RATIO.
8 0
2 years ago
Drag each tile to the correct box.
Tatiana [17]
V= 3.14 r2 h
1. 3.14 x 14 x 14 x 18 = 11083.54
2. 3.14 x 13 x 13 x 17 = 9025.8
3. 3.14 x 15 x 15 x 14 = 9896.02
4 .3.14 x 12 x 12 x 20 = 9047.79
so the order would be the second then the forth then the third then the first
4 0
3 years ago
Read 2 more answers
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