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Licemer1 [7]
3 years ago
8

When you would not need to use the quadratic formula

Mathematics
1 answer:
sergiy2304 [10]3 years ago
3 0

Answer: When the quadratic equation  can be factored or solved by completing the square, you do not need to use the quadratic formula

Step-by-step explanation: In the form   ax² + bx + c

Whenever <em><u>a</u></em> is 1 (implied, no coefficient of x²) and the constant,  <u><em>c</em></u>, is a multiple of numbers whose sum or difference is equal to <u><em>b</em></u>, factoring is much quicker and easier than using the quadratic formula.

Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.

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The diameter of a circle is 4 cm. Which equation can be used to find its circumference?
luda_lava [24]

Answer: OC = πx4

Step-by-step explanation:

This question is incomplete, the correct question is

The diameter of a circle is 4 cm. Which equation can be used to find its circumference?

OC = πx2

OC= πx4

4

Answer,

Since the diameter is given as 4cm

Also,

The circumference of a circle OC = π x diameter

Therefore, OC = πx4

8 0
3 years ago
Wren and Jenni are reading the same book. Wren is on page 12 and reads 4 pages every night. Jenni is on page 4 and reads 5 pages
sergejj [24]
Night 1-
               Wren 12
               Jenni 4
Night 2-
               Wren 16
               Jenni 9
Night 3-
               Wren 20
               Jenni 14
Night 4-
               Wren 24
               Jenni 19
Night 5-
               Wren 28
               Jenni 24
Night 6-
               Wren 32
               Jenni 29
Night 7-
               Wren 36
               Jenni 34
Night 8-
               Wren 40
               Jenni 39
Night 9-
               Wren 44
               Jenni 44
It would be 9 nights.
Graph using (x) and (y), Wren being (x) and Jenni being (y)
3 0
3 years ago
Which choice is an equation of the line written in point-slope form?
Sladkaya [172]

Answer:

Option 3)............... I guess so

8 0
3 years ago
whats the lateral area of a right circular cone if the diameter of the base is 4m and the slant height of the cone is 15m? round
alex41 [277]
First is to understand the terms. Lateral area is the surface area of a 3D figure, excluding the area of any base. 
<span>Laterial Area (L.A.) of a right cone = pi*radius*slant height </span>
<span>radius = 1/2 * diameter </span>
<span>L.A. = pi*(1/2)*(4)*(15)=30*pi </span>

<span>the formula for this is pi*r*rt(r^2 + h^2). If the diameter is 4, then the radius is 2. If the slant height is 15, then to get the real height we use the Pythagorean Theorem and get rt(221). So the lateral area is pi*2*rt(2^2 + (rt221)^2)...= 2pi*rt(225) = 30pi = 94.248 meters squared which is rounded to 94 meters squared.</span>
8 0
4 years ago
K is the midpoint of JL,JL=4x-2 and jk=7,find x KL and JL
diamong [38]
K is the midpoint of JL...so JK=KL=7
JL=(JK + KL)>>>>>>whole part axiom
or,4x=2×JK>>>>>>>{JK=KL➡JK+KL=JK+JK}
or,4x=2×7
or,x=14/4=7/2

[ x=7/2 ] [KL=JK=7] and [JL=4x=(4×7)/2=14]
4 0
4 years ago
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