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drek231 [11]
3 years ago
5

Select the proper placement for parentheses to speed up the addition for the expression 2 + 9 + 8 + 1 A. (1 + 2) + (9 + 8) B. (8

+ 9) + (2 + 1) C. (9 + 2) + (8 + 1) D. (8 + 2) + (9 + 1)
Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0
It's D because
(8+2) = 10
(9+1) = 10
Hope this helped. (:
irina [24]3 years ago
3 0
The answer is D. Because it is easier to add 9 and 2 and also 8 and 1.
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if $168.00 is the profit on a job, and this represents 8%of the contract price,what is the contract price?
Galina-37 [17]

We are told that $168.00 represents 8% of the contract price; therefore,we know that

original price *( 8/100) = $168.00

Now, writing out "original price" is a bit space-consuming; therefore, we will just rename it and say

original price = OP

Then, our equation above can be written as

OP\times\frac{8}{100}=168

We solve for OP (original price) by multiplying both sides by 100 and then dividing by 8. This gives us

OP=\frac{100}{8}\times168\textcolor{#FF7968}{\therefore OP=2100}\text{\textcolor{#FF7968}{.}}

Hence, the original contract price is $2100.

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1 year ago
One hundred adults were asked to name their favorite sport and the results are shown in the circle graph. What percent of adults
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If the graph is out of 100 people that means one person is one percent. So 22% of adults like basketball and 15% like baseball, add the two together and you get 37 percent
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3 years ago
James uses 1 1/2 cups of milk and 2 1/4 cups of flour for his favorite cookie recipe. This makes 60 cookies. How much milk and f
Scrat [10]

Answer:

to get you answer you would have to add 1 1/2 and 2 1/4, then your equation would be 60 ÷ 3 3/4 , then whatever your total is, multiply that by 40 and that would be your answer

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PRECALCULUS HONORS HELP ME PLZ AND THANKS
Natalka [10]

Inequalities are used to show the relationship between unequal expressions

  • <em>The set notation of (5) and (6) are: </em>\{x : -6 > x \ge -2\}<em> and </em>\{x:-4 < x \ge 6\}<em>.</em>
  • <em>See attachmen</em>t for the graphs

The following should be notated when plotting the graph of an inequality

  • < and > are represented with open circles, while \leq and \geq are represented with closed circles
  • The arrows of and \le point to the left, while the arrows of > and \geq point to the right.

So, we have:

(a)\ -8 < x

Rewrite as:

x > -8

The graph of x > -8 will point to the right, and it will use an open circle

(b)\ -6 > x \ge -2

Split the inequality:

-6 > x and x \ge -2

<em>It is not possible for -6 to be less than x and at the same time, x is greater than or equal to -2.</em>

<em />

Hence. -6 > x \ge -2 cannot be represented on a graph

(c)\ -4

Split the inequality:

-4 < x and x \ge 6

-4 < x means that -4 is less than x or x is greater than -4.

So, we have:

x > -4 and x \ge 6

If x > -4 and x \ge 6, then we make use of x > -4 because it contains more values of x.

The graph of x > -4 will point to the right, and it will use an open circle

Read more about inequalities at:

brainly.com/question/11612965

6 0
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