MATHEMATICS HIGH SCHOOL

Which shows the expression below in simplified form? (8.1 × 105) ÷ (9 × 102)

Answers

Answer 1
Answer: so i think this wan being 

(8,1 x 10^5)
----------------- = 0,9 x 10^3 = 9 x 10^2
 (9 x 10^2) 

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What is the inverse of the function f(x) = 2x – 10? A. h(x) = 2x - 5B. h(x) = 2x + 5 C. h(x) = 1/2x - 5 D. h(x) = 1/2x - 10
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Which of the following is not a correct description of the graph of the function y = -2x - 7?(A) The graph of the function contains the point (−2, −3), and when the value of x increases by 1 unit, the value of y decreases by 2 units. (B) The graph of the function contains the points (−1, −5), (2, −11), and (4, −15). (C) The graph of the function is a line that passes through the point (0, −7) with a slope of −2. (D) The graph of the function contains the points (0, −7), (1, −9), and (3, −1).
Select the two binomials that are factors of this trinomial x2+10x+16

A number that if multiplied by 6 and then increased by 48 will result to 600

Answers

Answer

92

Step-by-step explanation:

take 48 minus 600, you get 552 now divide 6 by 552 and you get your answer.

Mr. Brown is creating examples of systems of equations. He wants to have a system of equations with infinite solutions that includes the equation 5x + 2y = 8. Which equation could Mr. Brown use to complete the system so that it has infinite solutions?2x + 5y = 8
15x + 6y = 21
1.25x +0.5y = 2
6.5x + 3.5y = 9.5

Answers

In order to have a system of equations with infinite solutions, the equations must be equivalent. Two equations can be tested if they are equivalent by manipulating the equations such that they have equal coefficients for x or y.
We can take the coefficient of x as an example.

First, we reduce the coefficient of x of the given equation to 1 to make it simpler. We divide the whole equation by 5 and we get:
x + (2/5) y = 8/5

We do the same to the given options of equations.
We divide equation 1 with 2, equation 2 with 15, equation 3 with 1.25 and equation 4 with 6.5.
Compare the result with the given equation divided by 5 or x + (2/5) y = 8/5 and if it is the same, then the two equation are equivalent.

The third option: 1.25x +0.5y = 2 will give you the same equation.

Answer:

C.)1.25x +0.5y = 2

Step-by-step explanation:

Sonny substituded 5 for x in the proportion 16/x =48/15 and cross to multiply to get 240 =240 why is this?

Answers

If x = 5 then 5*48 = 240 and 16*15 equals 240 equals eachother.

Another perspective:   Divide 16 by 5  then divide 48/15

        16/5=3.2         48/15=3.2      Hence the porportions are the same.

Use the Distributive Property to evaluate each expression.-2(8-5)

A. -21
B. -6
C. 6
D. 18

Answers

Answer: c

Step-by-step explanation:

You multiply each number by 2 and then you subtract each number then you finally get 6

. A recipe calls for 3 teaspoons of salt for every 5 cups of flour. If you wanted to make a larger batch with 15 cups of flour, how much salt would you need? A. 5 teaspoons B. 10 teaspoons C. 9 teaspoons D. 6 teaspoons

Answers

Given:
3 teaspoons of salt for every 5 cups of flour.

How much salt is needed for 15 cups of flour?

This is a proportion problem:
a/b = c/d where ad = bc

3/5 = x/15
3*15 = 5x
45 = 5x
45/5 = x
9 = x

C. 9 teaspoons of salt is needed for 15 cups of flour.

3/5 = 9/15
3*15 = 5*9
45 = 45

How might this number be shown on a calculator?
4.117x10-29

Answers

The way that the number 4117 × 10⁻²⁹ can be shown on a calculator is; 4117 × 10⁻³²

How to write a number in standard form?

The standard form of a number is a way of writing the number in a form that follows certain rules.

Now, we can also write a number in scientific notation but then a calculator usually writes these types of number with exponent powers in standard form.

For example there is usually no decimal in standard form but instead whole numbers. Thus;

4.117 × 10⁻²⁹ when expressed again can be written as;

4117 × 10⁻²⁹ × 10⁻³ = 4117 × 10⁻³²

Read more about standard form at; brainly.com/question/19169731

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