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3 years ago

Which shows the equation below written in the form ax2 + bx+c = 0? x*2+7x+ 9 = 3

Mathematics

2 answers:

Gala2k [10]3 years ago

8 0

Hi!

x² + 7x + 9 = 3

x² + 7x + 9 - 3 = 0

x² + 7x + 6 = 0

eduard3 years ago

6 0

Answer:

x^2+7x+ 6 = 0

Step-by-step explanation:

x^2+7x+ 9 = 3

Subtract 3 from each side

x^2+7x+ 9-3 = 3-3

x^2+7x+ 6 = 0

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PLEASE HELP WILL MARK BRAINLIEST

quester [9]

From the side, area is that of a rectangle added to a trapezoid or triangle, depending on how you slice it
.. rectangle + trapezoid = (4 ft)*(24 ft) +(4 ft +8 ft)*(16 ft)/2 = 192 ft^2
.. rectangle + triangle = (4 ft)*(40 ft) +(1/2)*(4 ft)*(16 ft) = 192 ft^2

The side area is multiplied by the width to find the volume.
.. V = (192 ft^2)*(20 ft) = 3840 ft^3 . . . . . . maximum water volume

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That's a pint or so more than 28,725 gallons.

6 0

4 years ago

Plsssssssssssssssssssssssssssssss help

Semenov [28]

Answer:

Solution,

<ABE+<ABC=180

<ABE=180-97

<ABE=83°

<ABC=<ACB=83°

<ABC+<ACB+<CAB=180

<CAB=180-83-83

<CAB=14

<DAC+<CAB=180

<DAC+14=180

<DAC=180-14

<DAC(X)=166°

Hope this helps...

Good luck on your assignment...

7 0

4 years ago

Vance used the associative property to write (4.5 m + StartFraction 7 Over 8 EndFraction) minus 9 as the equivalent expression 4

Mariana [72]

Answer:

The forth one:No,the addition symbol was dropped in the second expression

Step-by-step explanation:

I took the quiz and got it right

8 0

3 years ago

Read 2 more answers

5x + 2y = 8

stich3 [128]

The answer should be c.

3 0

3 years ago

Read 2 more answers

Concentric circles have radil of 4 cm and 8 cm. What is the probability that a

monitta

The probability that a grain of rice dropped onto the circles at random lands outside the circle with the 4-cm radius and inside the circle with a radius of 8 cm is $\frac{3}{4}$ or 75%.

Step-by-step explanation:

Step 1:

First, we need to calculate the areas of both circles.

The area of a circle $= \pi r^{2}$ where r is the radius of the circle.

The inner-circle has a radius of 4 cm.

The area of the inner circle $= \pi (4^{2})= 3.1415(16) = 50.264.$

The outer circle has an inner radius of 4 cm and an outer radius of 8 cm.

So its area is $\pi (R^{2} -r^{2} )$ where R is the outer radius and r is the inner radius.

The area of the outer circle $= \pi (8^{2} -4^{2})= 3.1415(64-16).$

$3.1415(48) = 150.792.$

So the inner circle has an area of 50.264 square cm and the outer circle has an area of 150.792 square cm.

Step 2:

To find the probability of an event we divide the number of favorable outcomes by the total number of outcomes.

The total number of outcomes is the area of the entire circle

$= 50.264+150.792 = 201.056$ square cm.

The number of favorable outcomes is the area of the outer circle i.e. 150.792 square cm.

The probability of the rice falling in the outer circle $=\frac{150.792}{201.056} = \frac{3}{4} = 75 \%$ .

7 0

3 years ago