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nasty-shy [4]
2 years ago
7

Mr.Silva needs to order pizza for 30 students.Each student should get 1/4 of a pizza.How many pizzas should Mr Silva order?How m

uch pizza will me left over?
Mathematics
2 answers:
nadezda [96]2 years ago
6 0

Answer:

8 with 1/2 a pizza left

Step-by-step explanation:

first you divide 30 by 4 which will get you about 7 but there will be 2 students left so you order 8 and take away 2/4 of the last pizza which leaves 1/2 of a pizza left

zimovet [89]2 years ago
3 0
The answer is he needs 7.5 pizzas but you can’t do that so you round up to 8 pizzas
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What is the coefficient of the variable in the expression 4 − 3x − 7 + 6?
liberstina [14]
-3.

Coefficients are numbers that have a variable next to it, thus leading it to be -e of the -3x.

Hope this helps!
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3 years ago
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3 years ago
A teacher has two students, one two times as old as the other. The teacher is five times as old as the older student, and in 5 y
kramer
Let's call the younger student's age A and the older student's age B. The teacher's age will be T.

B = 2A
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Now we have two equations solved for T, so we can set them equal to each other.

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6 0
3 years ago
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Can someone help me with number 8 please? Thank you.
Naddik [55]
Answer: -4 \le x \le 5
Note: to write the domain in interval notation, you'd write [-4,5]
if you need the domain in set-builder notation, then you'd write \left\{x|x\in\mathbb{R}, \ -4\le x\le 5\right\}

------------------------------------------------------------------------------

Explanation:

The domain is the set of possible x input values. Look at the left most point (-4,-1). The x coordinate here is x = -4. This is the smallest x value allowed. The largest x value allowed is x = 5 for similar reasons, but on the other side of the graph.

So that's how I got -4 \le x \le 5 (x is between -4 and 5; inclusive of both endpoints)

Writing [-4,5] for interval notation tells us that we have an interval from -4 to 5 and we include both endpoints. The square brackets mean "include endpoint"

Writing \left\{x|x\in\mathbb{R}, \ -4\le x\le 5\right\} is the set-builder notation way of expressing the domain. The x\in\mathbb{R} portion means "x is a real number"

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<h3>Definition of standard deviation</h3>

Standard deviation can be defined as a statistic tool that measures the dispersion of a dataset in relation to its mean and is calculated as the square root of the available variance of the set.

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