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vaieri [72.5K]
3 years ago
13

2. -8+12= A::4 B:20. C:-20. D:-4

Mathematics
2 answers:
olga_2 [115]3 years ago
5 0

Your answer is: A. 4

Nataly_w [17]3 years ago
3 0

Answer:

4 is the answer.

Step-by-step explanation:

It is the answer because one of your numbers has a (-) sign. So you take

12-(-)8= 4 a positive 4 because 12 is not a negative

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Consider the geometric sequence below.
vladimir1956 [14]

Answer:

f(1) = 8

Common ratio: 0.5

Step-by-step explanation:

f(1) means the firs term in a sequence.

In the function f(n), represented by 8, 4, 2, 1, .., the first term is 8.

f(1) = 8

To find the common ratio, divide any term by the term before it.

We can use any two of the given terms in the sequence EXCEPT for 8 because it is the first term and does not have a term before it.

I choose to divide the second term by the first term:

4/8 = 1/2 = 0.5

3 0
3 years ago
The owner of a motel has 2900 m of fencing and wants to enclose a rectangular plot of land that borders a straight highway. If s
navik [9.2K]

Answer:

Step-by-step explanation:

Given that the owner of a motel has 2900 m of fencing and wants to enclose a rectangular plot of land that borders a straight highway.

Fencing is used for 2times length and 1 width if highway side is taken as width

So we have 2l+w = 2900

Or w = 2900-2l

Area of the rectangular region = lw

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Use derivative test to find the maximum

A'(l) = 2900-4l\\A"(l) = -4

So maximum when I derivative =0

i.e when l =\frac{2900}{4} =725

Largest area = A(725)

= 725(2900-2*725)\\= 1051250

1051250 sqm is area maximum

3 0
3 years ago
If v varies directly as w and v = 8 when w=1/2 find the equation that relate v and w
garri49 [273]

Answer:

v=kw. 8=k1/2

Step-by-step explanation:

Okay, so here's the equation. v=kw. Varies directly means if v rises, then w rises. If v decreases, then w will decrease. Let me know if that helps! (In case you need it, k=16.)

5 0
3 years ago
Read 2 more answers
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PtichkaEL [24]

solution:

n/2 + 9 = 20

n/2=20-9

n/2=11

n=22

6 0
3 years ago
Fran has a plank of wood 4.65 meters long. She wants to cut it into pieces 0.85 meters long. How many pieces of wood that length
DochEvi [55]
5 pieces. 4.65÷0.85=5. so u divide and ur answer is 5
3 0
3 years ago
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