All categories

3 years ago

How to round number to the given place value position

Mathematics

1 answer:

Alisiya [41]3 years ago

8 0

5 or more raise the score 4 or less let it rest. What is the number beside it example
3.14576
Round to 3.1

You might be interested in

Please help me with this

dusya [7]

The numbers below are cut off. Can you please add another picture

7 0

2 years ago

Equation of a line with an slope of 1/2 that contains (-4, 7)

nasty-shy [4]

Equation of a line with an slope of 1/2 that contains (-4, 7) is $y=\frac{1}{2} x+9$

Solution:

We have been given a point and slope of an equation and have been asked to write it in an equation. The two forms of writing a point and slope in equation are point slope form and standard form.

The standard form of a line is in the form Ax + By = C where A is a positive integer, and B, and C are integers. The standard form of a line is just another way of writing the equation of a line.

To write in standard form we will first write it in point slope form and then rearrange it into a standard from.

The formula for point slope form:

$y-y_{1}=m\left(x-x_{1}\right)$

where "m" is the slope of line

Given that "m" = $\frac{1}{2}$ and $(x_1, y_1) = (-4, 7)$

$\begin{array}{l}{y-7=\frac{1}{2}(x-(-4))} \\\\ {y-7=\frac{1}{2}(x+4)} \\\\ {y-7=\frac{1}{2} x+2} \\\\ {y=\frac{1}{2} x+9}\end{array}$

Now, let us convert this equation to standard form

0.5x + 9 = y

0.5x - y = -9

Thus we have found out equation of line in point slope and standard form

3 0

3 years ago

1. Evaluate the following expression:

stira [4]

Answer:

1. 37, 2. 1 2/5

Step-by-step explanation:

For Question 1:

Step 1: Replace the x values

x= 3, y=5

Now you get...

9x + 2y ---> (9 x 3) + (2 x 5)

(Remember, if an x value is beside a number, and it is replaced, that replaced number is to be multiplied with the number the previous x value was.)

Parentheses first, Multiplication second, Addition third (look at PEMDAS below :) )

Step 2: Multiply and Add

(9 x 3) + (2 x 5)

27 + 10

For Question 2:

Step 1: Replace the x and y values

m = 1, p = 5

Now your equation should look like this:

m + p ÷ 5 ---> 1 + 2 ÷ 5

Now, which one to do first? Use the PEMDAS strategy

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

You have to do it from top to bottom

Division comes first, which means, you have to divide first, then add:

2 ÷ 5 = 2/5

2/5 + 1 = 1 2/5

Hope this helps :)

-jp524

3 0

3 years ago

You buy the following materials for the new extension.

Daniel [21]

I assume you mean

2 tonnes of sand at £75.00 per tonne

20 bags of cement at £6.70 per bag

350 bricks at 45p each

If so, then

2 tonnes of sand at £75.00 per tonne = 2 * £75.00 = £150.00

20 bags of cement at £6.70 per bag = 20 * £6.70 = £134.00

350 bricks at 45p each = 350 * £0.45 = £157.50

Add the three amounts

£150.00 + £134.00 + £157.50 = £441.50

Answer: 441.50

7 0

3 years ago

Suppose a rectangular garden plot has a length that can be expressed as x+2 feet and a width expressed as x+7 feet. Write a poly

mafiozo [28]

Answer:

$Area = x^2 + 9x + 14$

$Perimeter = 4x + 18$

Step-by-step explanation:

Given:

Length of rectangular garden = (x + 2) ft

Width = (x + 7) ft

Required:

a. Polynomial expression of the area of the garden

b. Polynomial expression of the perimeter of the garden

SOLUTION:

Area of the rectangular garden = length × width

$Area = (x + 2)(x + 7)$

Expand using the distributive property of multiplication

$Area = x(x + 7) +2(x + 7)$

$Area = x^2 + 7x + 2x + 14$

$Area = x^2 + 9x + 14$

Perimeter = 2(length) + 2(width)

$Perimeter = 2(x + 2) + 2(x + 7)$

$Perimeter = 2x + 4 + 2x + 14$

Collect like terms

$Perimeter = 2x + 2x + 4 + 14$

$Perimeter = 4x + 18$

6 0

3 years ago