2 years ago

Which measurement is the best estimate for the height of a backyard fence?

Mathematics

1 answer:

hammer [34]2 years ago

6 0

2m is the best estimate. It’s an appropriate measurement.

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Write a numerical or variable expression for the quantity: the number of days in w weeks.

JulsSmile [24]

Answer:

7w is the answer

7 ×number of weeks

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3 years ago

Help pls 52 is 65% of what? 45% of 40 is what number?

Masja [62]

Let, that number = x

It would be: x * 0.65 = 52

x = 52 / 0.65

x = 80

So, that number and your answer is 80

18 is 45% of 40

45%/100 = 0.45

0.45*40=18

6 0

3 years ago

HELP QUICK! 15 POINTS

almond37 [142]

it will be 8.25 hope this helped

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3 years ago

Write the explicit formula for the geometric sequence. a1 = -5 a2 = 20 a3 = -80

Anni [7]

$a_1 = -5;\ a_2 = 20;\ a_3 = -80 \\\\a_2:a_1=r\ and\ a_3:a_2=r\\\\r=20:(-5)=-4\ check\ r=-80:20=-4\\\\a_n=a_1r^{n-1}\to a_n=-5\cdot(-4)^{n-1}=-5\cdot(-4)^{-1}\cdot(-4)^n\\\\=-5\cdot\left(-\dfrac{1}{4}\right)\cdot(-4)^n=\dfrac{5}{4}\cdot(-4)^n\\\\Answer:\boxed{a_n=-5\cdot(-4)^{n-1}\ other\ a_n=\frac{5}{4}\cdot(-4)^n}$

6 0

3 years ago

Please help need done today

joja [24]

Answer:

area of the BCD triangle=1/2×10×9

=45

area of the ABD triangle=1/2×10×3

=15

Total area=45+15

=60 square centimetres

7 0

3 years ago