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svetoff [14.1K]

3 years ago

8

1092 flowers are arranged into 26 vases, with the same number of flowers in each case.how many flowers would be needed to fill 1

30 such cases

1 answer:

gregori [183]3 years ago

6 0

1092 divided by 28 and you will get 42
And 1092 divided by 130 you will get 8.4

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What formula is used to find the circumference of a circle?<br><br> isn't it C = 2πr ?

cestrela7 [59]

Yes it is area is pie r^2

8 0

3 years ago

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areas of four triangles are 40 cm^2, 90 cm^2, 202.5 cm^2 and 455.6 cm^2 are continue in sequence. the enlargement factor is 1.5,

maw [93]

Answer:

9th Triangle

Step-by-step explanation:

Given the area of four triangles: $40 cm^2, 90 cm^2, 202.5 cm^2 \:and\: 455.6 cm^2$

If the Scale factor is 1.5.

This is a geometric sequence and the common ratio is 1.5 X 1.5.

Therefore, the area of any n triangle can be determined using the function:

$A(n)=40\cdot1.5^{2(n-1)}$

We want to determine which triangle has an area greater than $15000cm^2$ .

When A(n)=15000

$40\cdot1.5^{2(n-1)}>15000\\1.5^{2(n-1)}>\frac{15000}{40} \\1.5^{2(n-1)}>375\\\text{Change to Logarithm form}\\2(n-1)>Log_{1.5}375\\\text{Applying logarithm change of base to base 10 law}\\2(n-1)>\frac{Log 375}{Log 1.5} \\2n-2>14.62\\2n>14.62+2=16.62\\n>8.31$

Therefore, the 9th triangle has an area greater than $15000cm^2$ .

5 0

3 years ago

Which statement is logically equivalent to the following conditional statement?

Naddik [55]

<span>The best answer is:
If it is a rectangle, then it does not have three sides.
</span>This statement is also known as the equivalent contra-positive.

7 0

3 years ago

Watch help video

amm1812

Answer:

<h2> $\bold{a_n=-7n+39}$ </h2>

Step-by-step explanation:

25 - 32 = -7 and 18 - 25 = -7

It means an arithmetic sequence with common difference d = -7

$a_n = a_1+d(n-1)\\\\a_1=32\\d=-7\\\\a_n=32+(-7)(n-1)\\\\a_n = 32-7n+7\\\\\underline{a_n=-7n+39}$

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3 years ago

A contractor bought 7.6 ft squared of sheet metal. She has used 4.9 ft squared so far and has $43.20 worth of sheet metal remai

Karo-lina-s [1.5K]

Answer:

$16 per square foot

Step-by-step explanation:

6 0

3 years ago

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