Hobie's Candies are sold in triangular-pyramid

Mathematics

1 answer:

Eva8 [605]3 years ago

5 0

4 because triangle based pyramids have four faces

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Combine Like Terms and Eliminate Parenthesis. 5z-[2z-(13z+8)]

katen-ka-za [31]

We need to start from the innermost parenthesis and work our way out.

The first parenthesis is $13z+8$ . These are not like terms because one involves a variable, while the other is a constant term. Two terms are summable if they involve the same power(s) of the same variable(s).

So, we can take one step outwards, and we arrive to the square brackets. We have

$2z-13z-8$

and 2z and -13z are like terms, so we can sum them:

$2z-(13z +8) = 2z-13z-8 = (2-13)z-8 = -11z-8$

Finally we arrive to the whole expression, which is

$5z-(-11z-8) = 5z+11z+8 = (5+11)z+8=16z+8$

Because, again, 5z and 11z were like terms.

6 0

3 years ago

Solve this inequality for x. 81 - 1 1/5x <_ 55

dsp73

Answer:

(61. 8181..., ~)

Step-by-step explanation:

-11/5x<-136

x>680/11

x>61. 8181...

6 0

3 years ago

Dave and his brother Theo are selling cookies by the pound at the school bake sale. Dave sold 14.84 pounds of cookies and Theo s

blagie [28]

Answer:

35.84

Step-by-step explanation: add together 14.84 and 21 pounds of cookies

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3 years ago

Read 2 more answers

In a random sample of 30 sixth graders, 9 had traveled outside of the United States. There are a total of 120 sixth graders in t

Aleksandr-060686 [28]

36 students have traveled outside of the United States, when there are total 120 sixth graders.

Explanation

The number of students traveled outside of the United States is 9 when there is total 30 sixth graders. So, the ratio of the student traveled to the total students will be $9: 30 = 3: 10$

Now there are total of 120 sixth graders in the school and lets assume the number of students traveled outside the United states is $x$ . That means the ratio...