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Bess [88]
4 years ago
10

When the solution to x2 − 11x + 5 is expressed as 11 plus or minus the square root of r, all over 2, what is the value of r? x e

quals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a
A.2
B.5
C.101
D.141
Mathematics
2 answers:
soldi70 [24.7K]4 years ago
4 0

Answer:

C = 101

Step-by-step explanation:

strojnjashka [21]4 years ago
3 0

Answer:

C 101

Step-by-step explanation:

x² - 11x + 5 = 0

[-(-11) +- sqrt(11² - 4(5))]/2

[11 +- sqrt(101)]/2

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Find the value of x. Round to the nearest whole number.
andrew-mc [135]

Answer:

A. 61 degrees

Step-by-step explanation:

tan x = 9/5

tan^{-1} x=1.8

x≈60.9

8 0
3 years ago
What is the property for 6 times 4 times 3= 6 times 4 times 3
inn [45]
The multiplication property of equality, since multiplying 6 by 4 by 3 is done on the other side of the equation

7 0
4 years ago
A square pond is to be built in a park. The pond is 50 meters long and 50 meters wide. There should be a tile sidewalk 5 meters
valina [46]

area of the pond is 50*50 = 2500 square meters

 the walkway is 5 meters wide so the outside dimensions would be 60 meters by 60 meters

 area of that is 60 *60 = 3600 meters

 area of walkway is 3600 - 2500 = 1100 square feet

number of crates needed: 1100 / 45 = 24.44, round up to 25 crates

25 crates x $74 each = $1,850 total

5 0
4 years ago
The perimeter of rectangle is 48 cm. Find the sides of the rectangle if one of the sides is 12 cm longer than the other.
muminat

Answer:

Width is 4cm, length is 12 cm.

Step-by-step explanation:

Write the problem as an equation.

(x+12)*(x)=48

Where x is the length of the shorter side.

Solve.

(x^2)+12x=48

x=4

7 0
3 years ago
Read 2 more answers
100.
Ratling [72]

Check the picture below.

so our bases are "d" and "d+a+b", and a height of "c".

\bf \textit{area of a trapezoid}\\\\ A=\cfrac{h(x+y)}{2}~~ \begin{cases} x,y=\stackrel{parallel~sides}{bases}\\ h~~~=height\\ \cline{1-1} x=d\\ y=d+a+b\\ h=c\\ A=(d+b)c \end{cases}\implies (d+b)c=\cfrac{c[d+(d+a+b)]}{2} \\\\\\ 2(d+b)c=c[d+(d+a+b)]\implies 2dc+2bc=c(2d+a+b)

\bf ~~\begin{matrix} 2dc \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~+2bc=~~\begin{matrix} 2dc \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~+ac+bc\implies 2bc=ac+bc\implies 2bc=c(a+b) \\\\\\ \cfrac{2b~~\begin{matrix} c \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{~~\begin{matrix} c \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}=a+b\implies 2b=a+b\implies 2b-b=a\implies \blacktriangleright b=a \blacktriangleleft

8 0
4 years ago
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