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Lisa [10]
2 years ago
11

Can someone please answer these (real answers only)

Mathematics
2 answers:
adell [148]2 years ago
4 0
5. The number of visitors increase in April, spike in August and then decrease in September.

6. December is in winter, therefore many people do not travel during December.

7. There are not a lot of holidays in February and March, so people are either working or going to school instead of visiting.

I hope this helped!
harkovskaia [24]2 years ago
3 0
“5. The number of visitors increases in April, spike in August and then decreases in September. 6. December is in winter, therefore many people do not travel during December. 7. There are not a lot of holidays in February and March, so people are either working or going to school instead of visiting”
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18/4 = 100/w
4/18 = w/100

both A and B
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She has found that 5 out of 7 seeds produce corn. She wants to have 10,000 corn bearing plants. How many seeds should see plant
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Step-by-step explanation:

it 100 more than the 4 in 37,426

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Step-by-step explanation:

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Read 2 more answers
Show work and Factor 4x^2+xy-18y^2
grigory [225]

Answer:

4x^2+xy-18y^2=(4x+9y)\,(x-2y)

Step-by-step explanation:

Let's examine the following general product of two binomials with variables x and y in different terms:

(ax+by)\,(cx+dy)= ac\,x^2+adxy+bcxy+bdy^2

so we want the following to happen:

a\,c = 4\\ad+bc=1\\bd--18

Notice as well that ad+bc =1 means that those two products must differ in just one unit so, one of them has to be negative, or three of them negative. Given that the product bd=-18, then we can consider the case in which one of this  (b or d) is the negative factor. So let's then assume that a\,\,and \,\,c are positive.

We can then try combinations for  a\,\,and \,\,c  such as:

a = 4;\,\,c=1\\a=2;\,\,c=2\\a=1;\,\,c=4

Just by selecting the first one (a=4;\,\,c=1)

we get that 4d_b=1\\b=-4d-1

and since

bd=-18\\(-4d-1)\,d=-18\\-4d^2-d=-18\\4d^2+d-18=0

This quadratic equation give as one of its solutions the integer: d = -2, and consequently,

d=-18/(-2)\\d=9

Now we have a good combination of parameters to render the factoring form of the original trinomial:

a=4; \,\,b=9;\,\,c=1;\,\,d=-2

which makes our factorization:

(4x+9y)\,(x-2y)=4x^2+xy-18y^2

6 0
3 years ago
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