All categories

3 years ago

How do you simplify a math expression?

Mathematics

1 answer:

sammy [17]3 years ago

4 0

Answer:

Here are the basic steps to follow to simplify an algebraic expression:

remove parentheses by multiplying factors.

use exponent rules to remove parentheses in terms with exponents.

combine like terms by adding coefficients.

combine the constants.

You might be interested in

Using one or more of your senses to gather information is called O Inferrence O Prediction O Observation O Hypothesis

Vikentia [17]

The 3rd option Observation

3 0

3 years ago

a baker makes 130 loaves so that there are 6 times as many white loaves as granary loaves. half as many brown loaves as white lo

valentina_108 [34]

Answer:

Answer: 78 whites, 13 granary, 39 brown.

Step-by-step explanation:

For each 6 whites, there is 1 granary, and 3 brown. That adds up 10 loaves, so just multiply all those numbers by 13.

3 0

3 years ago

If x=1/4 and y=3/7, evaluate the following expression: 7x−4y

iVinArrow [24]

Answer:

1/28

Step-by-step explanation:

The expression is 7x-4y

x = 1/4
y= 3/7

Replace x by 1/4 and y by 3/7

7x-4y
7*( $\frac{1}{4}$ ) - 4*( $\frac{3}{7}$ ) multiply 1 by 7 and 4 by 3
$\frac{7}{4}$ - $\frac{12}{7}$ multiply 7/4 by 7 and 12/7 ny 4 to get the same denominator
$\frac{49-48}{28}$
1/28

3 0

3 years ago

Rochelle works part-time at the college museum, which pays her at a rate of $10 per hour. She also makes small bracelets that sh

Westkost [7]

We know for our problem that Rachel makes $10 per hour. Since $x$ represent the number of hours that she works, $10x$ will be the total amount that she will make for working $x$ hours. We also know that she sells bracelets for $5 each. Since $y$ represents the number of of bracelets that she sells, $5y$ will be her total revenue for selling $y$ bracelets. We also know that she needs to earn at least $200 a week to cover her expenses, so the sum of $10x$ and $5y$ must be equal or greater than 200:

$10x+5 \geq 200$

We can conclude that <span>the graphs that shows the inequality that represents this situation, with its solution region shaded is:</span>

7 0

3 years ago

Determine whether the vectors u and v are parallel, orthogonal, or neither.

Radda [10]

To check if two vectors are orthogonal(perpendicular), simply check their dot product, if their dot product is 0, then they're perpendicular, let's check.

$\bf \ \textless \ 7,-4\ \textgreater \ \cdot \ \textless \ -28,16\ \textgreater \ \implies (7\cdot -28)+(-4\cdot 16)\implies -196-64
\\\\\\
\boxed{-264}\impliedby \textit{nope, no orthogonal}$

to check if two vectors are parallel, simply check their slope by doing a b/a check, if the slopes are the same, then they're indeed parallel to each other, let's check.

$\bf \textit{slope of \underline{u} }\cfrac{7}{-4}\implies \boxed{-\cfrac{7}{4}}\qquad \qquad \textit{slope of \underline{v} }\cfrac{-28}{16}\implies \boxed{-\cfrac{7}{4}}$

well, there you have it, the slopes are the same.

4 0

4 years ago