MATHEMATICS HIGH SCHOOL

How many significant digits are in the number 8.1000?a. 2
b. 3
c. 4
d. 5

Answers

Answer 1

Answer:

Answer:

The correct option is D) 5.

Step-by-step explanation:

Consider the provided number 8.1000.

The numbers that contribute to the significance of the total number value are significant figures.

Rules of significant digit:

1) Non-zero digits are significant.

2) If the zeros is in between non-zero digits then it will be significant.

3) If the zeros are leading then they are not significant.

4) If the zeros are at the right of the last non zero digit then they are significant (Trailing Zero).

Now consider the number 8.1000

Since 8, and 1 are non zero digit so they are significant. Here the last three zero is also a significant digit because it follows the 4th rule.

Hence, the number has 5 significant digit.

Thus, the correct option is D) 5.

Answer 2

Answer: The answer is 5, the 0's after the 1 counts because it is not directly before or after the decimal

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Which expression is equal to (1.5)3? Select all that apply. A. 5.0625 B. 3.375 C. 4.5 D. 2.25 × 1.5 E. 2.5 × 1.25

Answers

The expression is equivalent to 3.375 and 2.25 × 1.5.

We have to determine

Which expression is equal to $(1.5)^3$ ?

The expression is equivalent to;

$= (1.5)^3\n\n= 1.5 * 1.5 * 1.5\n\n= 3.375$

Therefore,

The expression is equivalent to;

$= 2.25 * 1.5\n\n= 3.375$

Hence, the expression is equivalent to 3.375 and 2.25 × 1.5.

To know more about Expression click the link given below.

brainly.com/question/19943359

Answer:

its B and D

Step-by-step explanation:

cause 1.5 times 1.5 times 1.5 is 3.375 which is (1.5) and the explanation for D is that 2.5 times 1.25 Is 3.375 which is (1.5) Hope i helped:)

I have two-thirds of a square and I want to divide it by one-half. How many pieces would I have?

Answers

Answer:2 pieces or 1 1/3

Step-by-step explanation:

cause if 2/3 was 1 piece and you divide by 1/2 you have double what you had making you have 2 pieces

Final answer:

Dividing two-thirds by one-half results in one and one-third pieces.

Explanation:

To divide two-thirds of a square by one-half, you can multiply the fractions. This is a division of fractions problem. You have two-thirds (2/3) of a square and you want to divide it by one-half (1/2). In division of fractions, you multiply by the reciprocal of the divisor. So, you would change the division to a multiplication and flip the second fraction (1/2 becomes 2/1). Therefore, (2/3) divided by (1/2) becomes (2/3) * (2/1). When we multiply these fractions, we get (4/3) or one and one-third. So, you have one and one-third pieces.

Learn more about Division of Fractions here:

brainly.com/question/17205173

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I'm giving 50 points and brainliest answer to whoever can answer this... Please show your work so I can try to understand it xD <3

Answers

Ok, to solve this first you have to set up your proportion:

9/150=x/230

/ is a fraction

x= the number of vials it will take to treat 230 patients

in order to solve this, you have to cross multiply:

9 x 230= 2070

150 · x= 150x

so you get 150x=2070

then divide 2070 by 150

2070/150= 13.8

so it would take 13.8 vials of medicine to treat 230 patients

Okay, firstly, you want to work out how many people will 1 vial of malaria treat. So, you do this:

150 divided by 9= 16.6

That means for every 1 vial, 16.6 people are treated.

Since the question asks you to find out how many vials are needed if you're required to treat 230 people, you would do this:

230 divided by 16.6= 13.8

That means you need 13.8 vials to treat 230 people.

A point is reflected over the y-axis, but the x-coordinate does not change. What is the location of the point?

Answers

the point is on the y- axis it will be a postive number if it is going up if it is going down it will be negative.

Which expressions are equivalent to the expression −6x + 8? Select all that apply. 1. −2(3x + 4) 2. 2(−3x + 4) 3. 5(x + 1) − 11x + 3 4. x + 2 − 7x + 6 5. 8 − 6x

Answers

1)
-2(3x+4)=-6x-8≠-6x+8

2)
2(-3x+4)=-6x+8

3)
5(x+1)-11x+3=5x+5-11x+3=-6x+8

4)
x+2-7x+6=-6x+8

5)
8-6x=-6x+8

Answer: The expressions 2,3,4 and 5 are equivalents.

The endpoints of AB are A(4, 2) and B(1,-2). What are the coordinates of the midpoint of AB?

Answers

Answer:

Step-by-step explanation:

How do you find the midpoint of A and B?

To calculate it:

Add both "x" coordinates, divide by 2.

Add both "y" coordinates, divide by 2.

Final answer:

The coordinates of the midpoint of the line segment with endpoints A(4, 2) and B(1, -2) are found by averaging the corresponding x- and y-coordinates of the endpoints. This yields a midpoint of (2.5, 0)

Explanation:

The coordinates of the midpoint of the line segment with endpoints A(4, 2) and B(1, -2) can be determined by the midpoint formula. The midpoint formula states that the x-coordinate of the midpoint is the average of the x-coordinates of the two endpoints, and the y-coordinate of the midpoint is the average of the y-coordinates of the two endpoints.

Therefore, the x-coordinate of the midpoint is:

(x1 + x2) / 2 = (4 + 1) / 2 = 2.5

and the y-coordinate of the midpoint is:

(y1 + y2) / 2 = (2 + -2) / 2 = 0

Hence, the coordinates of the midpoint of AB are (2.5, 0).