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docker41 [41]
3 years ago
10

What is the equivalent radical expression for the exponetial expressiom below? 7 1/2

Mathematics
1 answer:
snow_tiger [21]3 years ago
3 0
I think it's the square root of 7, but I'm not totally sure.

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What are the solutions of the equation x^4-9x^2+8=0? Use u substitution to solve.
vodka [1.7K]

Answer:

The answer is the second option

Step-by-step explanation:

Let u=x^2.

( {x}^{2} ) {}^{2}  - 9( {x}^{2} ) + 8( {x}^{2} ) {}^{0}

{u}^{2}  - 9u + 8

(u - 1)(u - 8)

u = 1

u = 8

Set this equal to x^2

{x}^{2}  = 1

x = 1

or

x =  - 1

{x}^{2}  = 8

x = 2 \sqrt{2}

or

x =  - 2 \sqrt{2}

4 0
2 years ago
Which of the following is a point-slope equation for a line with the point (-2, 4) and a slope of 3?
never [62]

Answer:

y=3x+10

Step-by-step explanation:

y-4=(x+2)3

y-4=3x+6

y =3x+10

5 0
3 years ago
It’s elimination <br> -x+6y=3<br> -4x-2y=-14
gavmur [86]

Answer:

(3,1)

Step-by-step explanation:

Multiplying the second equation by 3, we get

-12x-6y=-42.

Now, adding this to the first equation, we get

-13x=-39

Therefore, x=3

plugging in x=3 to the first equation, we get that

-3+6y=3

adding 3 to both sides,

6y=6

therefore, y=1

6 0
3 years ago
Please help. URGENT. ASAP. Please, if you can.
spayn [35]

Answer:

surface area

(4 \times 4) + (2 \times 4 \times 7) \\ 16 + 56 \\ 72

6 0
3 years ago
Margie calculated that she would spend $175 on school supplies this year. She actually spent $97.50 on school supplies. What is
kodGreya [7K]
175 - 97.5 = 77.5

77.5  /  97.5 = 0.7948 = 79.5%

answer

<span>79.5%</span>
4 0
3 years ago
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