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kobusy [5.1K]
4 years ago
10

What value of c makes the polynomial below a perfect square?

Mathematics
1 answer:
ira [324]4 years ago
6 0
The value for c is A. 49.  That comes from the process of completing the square where you take half the linear term, square it, and add it in.  Our linear term is 14.  Half of 14 is 7, and 7 squared is 49.  So A
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E. Polynomials
horsena [70]

Answer:

see below

Step-by-step explanation:

1. 7x+2x+19x

(7, 2, 19) x

=28x

2. -6x-3+3x-9

-3x-3-9

=3x-12

3. (3x-4y) -(x+2y)

3x-4y-x-2y

=2x-6y

4. 18x5 - 6x3

90-18

=72

5. (x+5)(x-7)

x²-7x+5x-35

=x²-2x-35

6 0
3 years ago
is the total number of coupons Querida gave away on Saturday and Sunday proportional to the number of hours she worked on Sunday
Ann [662]

Answer:

ratios are not all equal, the total number of coupons given away is not proportional to the number of hours worked on Sunday.

Step-by-step explanation:

3 0
3 years ago
Please answer this question now
Ivan

Answer:

Approximately 439.6 square millimeters.

Step-by-step explanation:

The formula for the surface area of a cone is the following:

A=\pi r^2+\pi r l

Where, <em>r </em>is the radius and <em>l</em> is the slant height.

The radius is 7 and the slant height is 13. We also use 3.14 for π Thus:

A=(3.14)(7)^2+(3.14)(7)(13)\\\text{Use a Calculator}\\A\approx 439.6

5 0
3 years ago
Read 2 more answers
A travelers ground speed is 2 feet per second against the walkway and 8 feet per second with the walkway, what is the travelers
creativ13 [48]

Answer:

The traveller's speed is 5ft/s and the walkway speed is 3ft/s

Step-by-step explanation:

Given

Represent the traveller's speed with T and the walkway's speed with W.

When the traveller walk against the walkway, we have:

T - W = 2 ---- i.e. 2ft/s against the walkway

When the traveller walk with the walkway, we have:

T + W = 8 ---- i.e. 8ft/s with the walkway

Required

Solve for W and T

T - W = 2 --- (i)

T + W = 8 --- (ii)

Add (i) and (ii)

T + T - W + W = 2 + 8

T + T  = 2 + 8

2T = 10

Divide both sides by 2

\frac{2T}{2} = \frac{10}{2}

T = \frac{10}{2}

T = 5

Substitute 5 for T in (ii)

T + W = 8

5 + W = 8

Make W the subject

W = 8 - 5

W = 3

Hence, the traveller's speed is 5ft/s and the walkway speed is 3ft/s

7 0
3 years ago
HELPPP 20 PNTS
enot [183]

Answer:

25.1327cm

Step-by-step explanation:

C= 2πr

C=2π(4)

C=25.13274122

6 0
3 years ago
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