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posledela
3 years ago
8

What is the value of x in the equation 25x2 = 16?

Mathematics
2 answers:
valentina_108 [34]3 years ago
7 0
<span>25x2 = 16
x^2 = 16/25
</span>x^2 = 4^2/5^2
<span>x = 4/5

</span>
zlopas [31]3 years ago
6 0

Answer:

The answer is

x=(+/-)\frac{4}{5}

Step-by-step explanation:

we have

25x^{2}=16

Solve for x

Divide by 25 both sides

25x^{2}/25=16/25

x^{2}=16/25

Square root both sides

x=(+/-)\sqrt{\frac{16}{25}}

x=(+/-)\frac{4}{5}

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Use the discriminant to describe the roots of each equation. Then select the best description.16x2 + 8x + 1 = 0double rootreal a
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Hello!

The discriminant of quadratic functions is: b² - 4ac. Since the equation is in standard form, which is Ax² + Bx + C = 0 , we can substitute those values into our discriminant and simplify.

The value of the discriminant will tell us how many solutions there are to the given quadratic equation.

A positive discriminant will have two real solutions.

A discriminant of zero will have one real solution.

A negative discriminant will no real solutions.

1. Substitute, a = 16, b = 8, c = 1.

8² - 4(16)(1)

64 - 4(16)(1)

64 - 64(1)

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0

Since the discriminant is zero, the answer is choice A, double root, because since it is raised to the power of 2, it must has two roots, but in this case, both of the roots the same x-values.

3 0
2 years ago
Aubrey went shopping for shrimp for her family's annual shrimp boil. Find the cost per pound. Which store has the best buy of co
denpristay [2]

Answer:

Cash Saver has the best price $13.44 per pound

Step-by-step explanation:

Lets work in oz.

PW sells 10 oz for 8.50 so 8.50/10 = 85 cents per ounce

CS sells 8 oz for 6.75 so 6.75/8 = .84 cents per ounce

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5 0
3 years ago
Ye has his own business. He checks his sales receipts three times a day, his afternoon sales were 50$ more than his mourning sal
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Answer:

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Step-by-step explanation:

It's 150 because ye evening sales are three times of his afternoon sales.

SO that means you have to times 50x3=150 or you can add 50+50+50=150. there is your answer.

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3 years ago
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