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3 years ago

I need help with this please

Mathematics

1 answer:

Vinvika [58]3 years ago

5 0

Answer:

Step-by-step explanation:

7x6

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A graph is shown in the picture. Which root has the multiplicity of 3?

kari74 [83]

I think the awnser is c

8 0

2 years ago

If a+b=9 and ab=18,find the value of a and b.

Blizzard [7]

Answer:

Given:

a + b = 9

=> a = 9 - b

Given:

a x b = 18

=> (9 - b) x b = 18

=> 9b - b^2 = 18

=> b^2 - 9b + 18 = 0

=> (b - 3)(b - 6) = 0

=> b = 3 => a = 6

=> b = 6 => a = 3

Hope this helps

3 0

3 years ago

Fill in the missing fraction or mixed number __ + 1/4 = 5/8

gogolik [260]

3/8=answer

1) 5/8-1/4=

2) (5•4)-(1•8)=

8•4

3) 20-8

32 =

4) 12

32=

5) 12/4

32/4=

6) 3

8 =answer

5 0

3 years ago

Determine if the coordinate (6, 8) lies on the circle x^2 + y^2 = 100.

SVEN [57.7K]

Answer:

x² + y² = 100

6² + 8² = 100

36 + 64 = 100

100 = 100

Because this is a true statement, the answer is yes, it does lie on the circle.

3 0

3 years ago

The resistance in ohms of a metal wire temperature sensor varies directly as the temperature in degrees Kelvin (K). If the resi

Orlov [11]

Answer:

The resistance at a temperature of 250 K is 750 ohms

Step-by-step explanation:

We know that the resistance of a metal wire temperature sensor varies directly as the temperature, so we can construct a model using direct variation.

The definition of direct variation is:

Let x and y denote two quantities. Then y varies directly with x, or y is directly proportional to x, if there is a nonzero number k such that

$y=kx$

The number k is called the constant of proportionality.

Applying the definition of direct variation to our situation, we get

Let R be the resistance in ohms, and t the temperature in K

$R=kt$

Next, find the value of k, we know that when the temperature is 170 K the resistance is 510 ohms

$510=k\cdot 170\\\\k=\frac{510}{170}=3\:\frac{ohms}{K}$

Substitute k into the equation

$R=3\cdot t$

Find the resistance at a temperature of 250 K

$R=3\cdot 250=750 \:ohms$

The resistance at a temperature of 250 K is 750 ohms.

4 0

2 years ago