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3 years ago

Explain how to use grouping symbols to organize information appropriately.

2 answers:

7 0

The use of grouping symbols in math shows us which part of the problem or expression should be done first. Brackets, braces and parentheses are common grouping symbols used in mathematics. If no symbol is shown between brackets, forexample, (3+7)(8+1) it means that you should multiply after simplifying the operations inside the brackets.

muminat3 years ago

5 0

Answer: Grouping symbols in mathematics are the symbols which are used to group numbers or variables.There are three common types of grouping symbols such as parentheses ( ), brackets [ ], and braces { }.

There are some rules such as PEDMAS [parentheses,exponents,divide,multiply,addition,subtraction]or BEDMAS [brackets,exponents,divide,multiply,addition,subtraction] and BODMAS [bracket,of,divide,multiply,addition,subtraction] which are used in sequence from left to right to organize information appropriately and simplify the problem to get the answer.

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What is 5.138 + 2.624 = ? (show ur work)

Mrac [35]

Answer:

7.762

Step-by-step explanation:

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1 year ago

PLEASE HELP!!!

pogonyaev

Step-by-step explanation:

Part A:

Let $m$ be the number of mittens and $s$ be the number of scarves. Then we have the inequalities:

$s+m\leq 30.$ This says Nivyana and Ana cannot make more than 30 scarves

$50s+25m\geq 1000.$ This says that Nivyana and Ana have to earn at least $1000.

Part B:

The graph is attached.

Notice that the graphs of the inequalities are solid lines, this just means that the points on these lines included to the solutions of each inequality.

The darker shaded region and the solid lines bounding it, are the solutions to the inequalities because that's where the values common to both inequalities are found.

Part C:

From the graph we get two possible solutions:

15 scarves & 10 mittens

25 scarves & 5 mittens.

These two points lie on the solid lines that bound the darker shaded region (I picked those points to stress that the lines bounding the dark region are also solutions.)

8 0

2 years ago

where you imagined depositing $500 into a savings account that had an annual interest rate of 5%. Calculate how much you would e

romanna [79]

Answer:

Step-by-step explanation:

Column 1:

500 x 5% = 250

$250 in interest each year

Column 2:

500 + 250 = 750

$750 at the end.

4 0

2 years ago

taurus [48]

Answer:

$x^2 - 2x + 10$ , option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

$i^2 = -1$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

The solutions are:

$x_1 = 1 - 3i, x_2 = 1 + 3i$

We have to find the polynomial. All option have $a = 1$ . So

$(x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10$

The correct answer is given by option b.

6 0

3 years ago

Match each Situation to one of the equations

Elis [28]

Answer:

A: y = -2x

B: rate(meters/time)= 12 meters(distance) ÷ 2 minutes(time)

Step-by-step explanation:

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2 years ago