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Elina [12.6K]
3 years ago
10

What are the best tips to score more than 90% in the class 10 cbse board exams 2021-2022, I'm really nervous

Mathematics
1 answer:
Nataliya [291]3 years ago
7 0

Answer:

Take exam

Step-by-step explanation:

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The wildflowers at a national park have been decreasing in numbers. There were 1200 wildflowers in the first year that the park
bonufazy [111]

Year      New flowers

1                 1200

2                 300

3                   75

There were 1200 wildflowers in the first year that the park started tracking them. Since then, there have been one fourth as many new flowers each year

Initially there are 1200 flowers and start decreasing by \frac{1}{4}

So first term is 1200 and common ratio is \frac{1}{4}.

Its a geometric sequence so summation becomes

i =1∑ ∞ 1200(\frac{1}{4})^{i-1}

Now we find the sum

We use sum formula

Sum = \frac{a}{1-r}

Where a is the first term , a= 1200

r is the common ratio , r= 1/4

Sum = \frac{1200}{1-(\frac{1}{4})}

Sum = \frac{1200}{\frac{3}{4}}

Sum = 1600 wildflowers

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4 years ago
Rewrite 20 = 8x + 4r
3241004551 [841]

Answer:

Step-by-step explanation:

20 = 8x + 4r can be rewritten in multiple ways.

1.  Reduce the coefficients:  5 = 2x + r

or

2.  Solve for r:  r = 5 - 2x

or

                                 5 - r

3.  Solve for x:  x = -----------

                                    2

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3 years ago
The scale factor of a model of a swimming pool to the actual swimming pool is 1 to 20. the volume of the actual pool is 400 m^3.
erica [24]
P(v)=5000/v hope this helps
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3 years ago
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When I turn my calculator upside down, the digits 1,2,4,5,6,8 and 9 still remain the same. For example, when I turn my calculato
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That's simple, six upside down is 9, 5 upside down is 2, and 9 ipside down is two 
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3 years ago
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Answer:

B

Step-by-step explanation:

If the chair is not broken, then the taxes are high.

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