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2 years ago

15

Which graph shows the solution set of -2 + H - -4 -3 -2. -1 0 1 2. 3 4 5 o

r> 1
-1
H
+
H
-3
-2
0
1
2
3
4
5
O
-4
-3
- 1
1
2
3
4
5
o
1
-3
-
-1
1
2
3
4
5

2 answers:

natulia [17]2 years ago

6 0

Answer:

Where is the graph?

navik [9.2K]2 years ago

4 0

2nd one hope this helps

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Find the sum of the first 8 terms of the sequence: -5. 15, -45, 135, .......

MakcuM [25]

Sum of geometric sequence

for the sum where the initial value is a₁ and the common ratio is r and the term is n

$S_n= \frac{a_1(1-r^n)}{1-r}$

common ratio is -3
-5 times -3 is 15, -15 times -3=-45 etc
first term is -5
and we want the 8th term

$S_8= \frac{-5(1-(-3)^8)}{1-(-3)}$
$S_8= \frac{-5(1-6561)}{1+3}$
$S_8= \frac{-5(-6560)}{4}$
$S_8= \frac{32800}{4}$
$S_8= 8200$

the sum is 8200

7 0

3 years ago

Plz help me with 13-16

svetlana [45]

Answer:

13) $x = 10$

14) $x = 22$

15) $x = 12$

16) $x = -15$

Step-by-step explanation:

13) $4x+5x=9x;90/9=10$

14) $45-1=44;44/2=22$

15) $37-1=36;36/3=12$

16) $-54+26=-28;x-28=3x+2;x=-15$

6 0

3 years ago

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Svetllana [295]

Answer:

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Step-by-step explanation:

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3 years ago

A one-parameter family of solutions of the de p' = p(1 − p) is given below.

tensa zangetsu [6.8K]

Answer:

A solution curve pass through the point (0,4) when $c_{1} = -\frac{4}{3}$ .

There is not a solution curve passing through the point(0,1).

Step-by-step explanation:

We have the following solution:

$P(t) = \frac{c_{1}e^{t}}{1 + c_{1}e^{t}}$

Does any solution curve pass through the point (0, 4)?

We have to see if P = 4 when t = 0.

$P(t) = \frac{c_{1}e^{t}}{1 + c_{1}e^{t}}$

$4 = \frac{c_{1}}{1 + c_{1}}$

$4 + 4c_{1} = c_{1}$

$c_{1} = -\frac{4}{3}$

A solution curve pass through the point (0,4) when $c_{1} = -\frac{4}{3}$ .

Through the point (0, 1)?

Same thing as above

$P(t) = \frac{c_{1}e^{t}}{1 + c_{1}e^{t}}$

$1 = \frac{c_{1}}{1 + c_{1}}$

$1 + c_{1} = c_{1}$

$0c_{1} = 1$

No solution.

So there is not a solution curve passing through the point(0,1).

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3 years ago

Which solution contains the correct number of significant digits for the product 2.80 mm · 0.1 mm.

BigorU [14]

2 significant digits should be represented in the product

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3 years ago