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2 years ago

I need the missing blanks

Mathematics

2 answers:

Natali [406]2 years ago

8 0

Just do them yourself

IRISSAK [1]2 years ago

4 0

The first Common Ratio : r = 2

Explicit formula : a(n) = - 2 ( 2 )^n-1

___________________________

The second Common Ratio : r = 1/3

Explicit formula : a(n) = 27 ( 1/3l)^n-1

___________________________

The third Commom Ratio : r = - 3

Explicit formula : - 5 ( - 3 )^n-1

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B) Solve x ^ 2 + 5x - 14 = 0

uranmaximum [27]

$x^2 +5x -14 =0\\\\\implies x^2 +7x -2x -14 =0\\\\\implies x(x+7) -2(x+7)=0\\\\\implies (x-2)(x+7) =0\\\\\implies x =2~~ \text{or}~~ x =-7$

6 0

3 years ago

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Number 14 Help Please

omeli [17]

Answer:

there is no right answer tell ur teacher

Step-by-step explanation:

there is no right answer i dont know why

8 0

3 years ago

Your friends heart beats 25 times in 10 seconds while running. What is the heart rate in beats per minute while running?

Maslowich

150 beats per minute

7 0

4 years ago

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Anyone have any clue? would love help even for one of the questions!

Alex787 [66]

Answer:

OC = 10.07 CM

BC = 9.73 cm

area triangle OAB = 97.98 cm^2

area of sector OADB = 150.05 cm^2

% of diagram that is shaded = 65%

Step-by-step explanation:

cos 44 = OC/14

0.71934(14) = OC = 10.07

sin 44 = BC/14

0.6947(14) = BC = 9.73

area of sector OADB = (88/380)(Pi)14^2) =150.05

area triangle OAB = (OC)(BC)(0.5)(2) = 97.98

% of diagram shaded = 97.98/150.05 = 0.65 = 65%

5 0

3 years ago

Help me pls thank you

grigory [225]

Answer:

9.8

Step-by-step explanation:

Using angle bisector theorem,

$\frac{16.7}{7.7}=\frac{x}{4.5}$

multiplying both sides by 1.5, the answer is approximately 9.8.

8 0

3 years ago

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