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3 years ago

Solve the equation using square roots.

Mathematics

1 answer:

Gelneren [198K]3 years ago

8 0

My answer I got 9x13and half over 1=x

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What's the answer to 4x-7=-27

ololo11 [35]

Answer:

x=-5

Step-by-step explanation:

4x-7=-27

Add 7 to each side

4x -7+7 = -27+7

4x = -20

Divide by 4

4x/4 = -20/4

x =-5

8 0

4 years ago

An airplane travels 3690 kilometers against the wind in 5 hours and 4490 kilometer with the wind in the Sam amount of time what

exis [7]

Step-by-step explanation:

Against the wind, the wind works against the speed. With the wind, the wind aids the speed.

4(p - w) = 2416

4(p + w) = 2896

p - w = 604

p + w = 724

2p = 1328

p = 664 mph

664 + w = 724

w = 60 mph

6 0

3 years ago

Please help I'll mark brainliest

NISA [10]

Answer:

470?

Step-by-step explanation:

I am not fully sure of the answer

7 0

3 years ago

Read 2 more answers

A polynomial with rational coefficients has roots 5 and -6i. (The i is an imaginary number not variable). What is the polynomial

mars1129 [50]

Answer:

The answer is { $x^{3}$ -(5) $x^{2}$ (36)× $x$ -(180)

Step-by-step explanation:

A polynomial with rational coefficients has roots 5 and -6i (There i is the

imaginary number not variable )

As we knew that imaginary no comes in pair . This means that if -6i is

one root then the other root will be 6i

So if we assume the lowest polynomial that is possible is given as

{ $x^{3}$ -(sum of all roots) $x^{2}$ +(roots taken two at a time)

$x$ -(product of all roots)

{ $x^{3}$ -(5+6i+(-6i)) $x^{2}$ +(5×6i +5×(-6i) +6i×(-6i))

$x$ -(5×6i×(-6i))

$i^2$ = -1

{ $x^{3}$ -(5) $x^{2}$ (36)× $x$ -(180)

The general case we assume that the three previous roots and rest roots

a4,a5,a6 ...............an

$x^n$ -(sum of all roots)× $x^{n-1}$ +(roots taken two at a

time) × $x^{n-2}$ - .......................................... (product of all roots)

3 0

3 years ago

If 10 workers, working for 4 hours complete the work in 12 days, in how many days will 8 workers working for 6 hours complete th

liq [111]

Answer:

As per the question, 10 workers working for 4 hours a day complete their work = 12 days. 1 person working for 1 hour a day complete the work = 12×10×4 days. Thus, the 8 persons working for 6 hrs a day complete their work in 10 days.

Step-by-step explanation:

hope it helps

please mark brainliest

4 0

3 years ago