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4 years ago

What number makes the statement true - 6=15

Mathematics

2 answers:

tiny-mole [99]4 years ago

7 0

Well, 21-6=15. I don't know if that's what you're looking for. Let me know if that works.

AVprozaik [17]4 years ago

5 0

The number that make this statement true is 21.

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Draw a diagram and explain how you can use it to find 3 ÷ 1/5

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3 years ago

What is 1 7/16 as a decimal?

klasskru [66]

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3 years ago

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3 years ago

Solve for x. 2x + 16 = 3(x - 9) A) -43 B) -25 C) 0 D) 43

sergiy2304 [10]

Answer:

x = 43

Step-by-step explanation:

2x + 16 = 3(x - 9)

2x + 16 = 3x - 27

2x - 16 = 3x -27 (-16)

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2x (-3x) = -43

-1x or -x

-x = -43

-43/ -x = 43

4 0

3 years ago

Determine if the sequence is arithmetic. If it is, find the common difference. Is the sequence a function ?

BaLLatris [955]

$6)\\r=a_{n+1}-a_n\to r=a_2-a_1=a_3-a_2=a_4-a_3=...\\\\a_1=-7;\ a_2=-10;\ a_3=-11;\ a_4=-13\\\\a_2-a_1=-10-(-7)=-10+7=-3\\a_3-a_2=-11-(-10)=-11+10=-1\\\\a_3-a_2\neq a_2-a_1\\\\\text{It's not an arithmetic sequence}$

$\r=\dfrac{a_{n+1}}{a_n}\\\\r=\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...\\\\8.)\\a_1=4;\ a_2=20;\ a_3=100;\ a_4=500\\\\r=\dfrac{20}{4}=\dfrac{100}{20}=\dfrac{500}{100}=5\\\\10.)\\a_1-30;\ a_2=-45;\ a_3=-50;\ a_4=-65\\\\\dfrac{a_2}{a_1}=\dfrac{-45}{-30}=\dfrac{3}{2}\\\\\dfrac{a_3}{a_2}=\dfrac{-50}{-45}=\dfrac{10}{9}\\\\\dfrac{a_2}{a_1}\neq\dfrac{a_3}{a_2}\\\\\text{It's not a geometric sequence}$
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3 years ago