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Sati [7]
3 years ago
9

Solve r squared+7r+6=0

Mathematics
2 answers:
Whitepunk [10]3 years ago
6 0

Answer:

r=-6

r=-1

Step-by-step explanation:

r^2+7r+6\\(r+6)(r+1)=0\\\\r+6=0\\r=-6\\\\r+1=0\\r=-1

krok68 [10]3 years ago
6 0

Answer:

r = -6

or

r = -1

Step-by-step explanation:

from your question

r² + 7r + 6 = 0

we have,

(r +6)(r + 1)

either

r + 6 =0

r = -6

or

r + 1 = 0

r = -1

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Z = { x:x is an integer, x ≥ - 3 and x ≤ + 3}​
tankabanditka [31]

Answer:

If this is asking for the set:

Z = {-3, -2, -1, 0, 1, 2, 3}

Step-by-step explanation:

Z is the set of all integers and it appears that you are being asked for the values in the set Z that are within the range:  -3 ≤x ≤ 3

5 0
3 years ago
Which system of linear inequalities has the point (2, 1) in its solution set? Which system of linear inequalities has the point
brilliants [131]

Answer:

c

Step-by-step explanation:

c Which system of linear inequalities has the point (2, 1) in its solution set? Which system of linear inequalities has the point (2, 1) in its solution set?

y less-than negative x + 3. y less-than-or-equal-to one-half x + 3 On a coordinate plane, 2 lines are shown. The first solid straight line has a positive slope and goes through (negative 4, 1) and (0, 3). Everything below the line is shaded. The second dashed straight line has a negative slope and goes through (0, 3) and (3, 0). Everything to the left of the line is shaded.

y less-than negative one-half x + 3. y less-than one-half x. On a coordinate plane, 2 lines are shown. The first solid straight line has a negative slope and goes through (0, 3) and (4, 1). Everything below the line is shaded. The second dashed straight line has a positive slope and goes through (0, 0) and (2, 1). Everything below and to the right of the line is shaded.

y less-than-or-equal-to negative x + 3. y less-than-or-equal-to one-half x + 2 On a coordinate plane 2 solid straight lines are shown. The first line has a positive slope and goes through (negative 4, 1) and (0, 3). Everything below the line is shaded. The second line has a negative slope and goes through (0, 3) and (3, 0). Everything below and to the left of the line is shaded.

y less-than one-half x. y less-than-or-equal-to negative one-half x + 2v

7 0
3 years ago
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A function that is continuous over a finite closed interval necessarily have both a maximum and a minimum value over that interv
aleksklad [387]
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7 0
3 years ago
What is the differentiation of (sin3x-cos4x)(tan6x+sec8x)
Ksenya-84 [330]

Answer:

expanded:

y = sin(4x)*sin(4x)*cos(3x)

need to use the product rule and chain rule

look at individual derivatives, use chain rule

d/dx sin(4x) = 4cos(4x)

d/dx cos(3x) = -3sin(3x)

put it together using product rule

dy/dx = 4cos(4x)*sin(4x)*cos(3x) + 4cos(4x)*sin(4x)*cos(3x) - 3sin(3x)*sin(4x)*sin(4x)

simplify

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4 0
3 years ago
In the figure below, triangle RPQ is similar to triangle RTS.
kumpel [21]

Answer:

The distance between P and Q is 54

Step-by-step explanation:

We are given that triangle RPQ is similar to triangle RTS.

Property of similar triangle: The ratio of any pair of corresponding sides is the same.

So, by property : \frac{RP}{RT}=\frac{PQ}{ST}

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ST=36

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So,\frac{42}{28}=\frac{x}{36}

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54=x

Hence the distance between P and Q is 54

8 0
3 years ago
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