4.27 as a improper fraction

Answers

Answer 1

Answer: Well as a high school-er this should be easy. Divide 4.27 and get an fraction of 47/11.

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Which expression is equivalent to 5x2 – 8 ?
explain

Answers

Answer:

10x+−8

Step-by-step explanation:

multiply 5 x 2 = 10

turn 8 to -8

now your answer is 10x+-8

What is the sum of the polynomials 8x^2-7x+3 and 2x^2 +10x-5

Answers

Answer:

10x^2 + 3x - 2

Step-by-step explanation:

Final answer:

To find the sum of the polynomials, add the like terms together. The sum of the given polynomials is 10x^2 + 3x - 2.

Explanation:

To find the sum of the polynomials, you need to add the like terms together. Start by adding the coefficients of the x-squared terms, which are 8 and 2. This gives you 10x^2. Then, add the coefficients of the x-terms, which are -7 and 10. This gives you 3x. Finally, add the constant terms, which are 3 and -5. This gives you -2. So, the sum of the polynomials is 10x^2 + 3x - 2.

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Express scientific notation for 0.00032

Answers

$0.00032 < 1\n\n0.\underbrace{0003}_(4\to)2=3.2\cdot10^(-4)$

3.2•10^-4.

^=exponent

These values are standardized test scores. What is the mean score to the nearest tenth?27.2 13.5 42.1 37.9 25.0

Answers

First add up the numbers.
27.2+13.5+42.1+37.9+25=145.7
Now divide it by 5
29.14 or 29.1 rounded is the answer

The equation x^2+y2-4x+2y=b describe a circle

Answers

$x^2+y^2-4x+2y=b\implies~x^2-4x+4+y^2+2y+1=b+5\implies~(x-2)^2+(y+1)^2=b+5$

This describes a circle centered at $(2,-1)$ with radius $√(b+5)$ .

2) reflection across y-3

Answers

You just reflect it over the y=3 line
In the y-axis, number 3, the whole horizontal line is the reflection line given.
Unfortunately i couldnt draw the shape because i didnt know the coordinates

Final answer:

Reflection across y=3 in mathematics means that every point or object is mirrored over the line y=3. This results in the x-coordinate remaining the same, while the y-coordinate changes, following the formula (x, y) => (x, 2*3-y). It involves mirroring the points above and below the line y=3.

Explanation:

In mathematics, reflection across y=3 implies that every point or object on the coordinate plane is mirrored over the horizontal line y=3. Let's say you have a point (x,y), when it is reflected over y=3, the new point will remain at the same x position, but its y-coordinate changes. The formula for reflection is (x, y) => (x, 2*3-y). Therefore, if a point is above the line y=3, it will be reflected below it and vice versa. For example, if you have a point at (5,4), it will be reflected onto the point (5,2).

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Darnell is building a model submarine using a scale of 1 inch = 16 feet.a. The finished length of the model is 27 inches. What is the actual length of the submarine?b. Suppose Darnell creates another model and decides to use a different scale. An actual length of 42 feet is shown on the new model as 12inches. Complete the ratio for the new scale.1 inch = feet

Someone please help!!!! 20 Points to whoever answers CORRECTLY first. Thanks