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antiseptic1488 [7]
3 years ago
5

Solve the equation by completing the square. Round to the nearest hundreth if necessary. x^2-x-7=0

Mathematics
1 answer:
gregori [183]3 years ago
8 0
X^2 - x  = 7
(x - 0.5)^2 - 0.25 = 7
(x - 0.5)^2 = 7.25
(x - 0.5)  = +/- sqrt 7.25
x  =  0.5 +/- sqrt7.25 

solution set is {-2.19, 3.19,}
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How do you find the base area of a rectangular prism and a cylinder? Please help
Pani-rosa [81]

Answer:

See explanation.

Step-by-step explanation:

The 'base' of a rectangular prism refers to only one side of the rectangular prism, which is a rectangle.

The formula for the area of a rectangle is as follows:

A=lw

Where A = area, l = length, and w = width.

The 'base' of a cylinder refers to only one side of the cylinder, which is a circle.

The formula for the area of a circle is as follows:

A=\pi r^2

Where A = area and r = radius.

Just in case you typed your question incorrectly and were asking for surface area, here is the formula for surface area for both as well:

Rectangular prism: A=2(wl+hl+hw)\\

Cylinder: A=2\pi rh+2\pi r^{2}

3 0
3 years ago
Determine whether the following statement is true or false. Then, use complete sentences to explain your answer. If you wish, yo
chubhunter [2.5K]

Answer:

False

Step-by-step explanation:

An acute angle can be scalene

Eg - 2 angles of 20 degrees , and 1 angle of 50 degre

HOPE THIS WILL HELP YOU

8 0
3 years ago
Find the value of b here
sweet [91]

Answer:

Step-by-step explanation:

We will start with the angle that measures 57 degrees. This angle is supplementary to the one next to it coming off the straight line. 180 - 57 = 123.

The rule for quadrilaterals is that same side angles are supplementary, so the angle next to the 123-degree angle (to the immediate left of that angle 123) is 57. THAT 57-degree angle is supplementary to angle b, so angle b = 180 - 57 which is 123. So C is your answer.

8 0
3 years ago
A. -2/9<br><br> B. -1/3<br><br> C. 1/3<br><br> D. 2/9
gogolik [260]

Answer:

C. 1/3

Hope this helps!:)

4 0
3 years ago
Read 2 more answers
Please help ASAP. Need it for homework
zmey [24]
Reliable taxis : for 30 miles
C = 1.5x....x = 30
C = 1.5(30)
C = 45

speedy taxis : for 30 miles
C = 1.1x + 11.5....x = 30
C = 1.1(30) + 11.5
C = 33 + 11.5
C = 44.5

city taxis : for 30 miles
C = 1.25x + 8...x = 30
C = 1.25(30) + 8
C = 37.5 + 8
C = 45.5

the cheapest company is : speedy taxis
8 0
3 years ago
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