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Gekata [30.6K]
3 years ago
7

Explain the difference between 4 times the sum of x and y and the sum of 4 times x and u

Mathematics
1 answer:
Rainbow [258]3 years ago
4 0

Answer:

The first question is adding x and y together, before multiplying it by 4.

The second question is 4 multiplies x, then y is added into 4x.

Step-by-step explanation:

4 multiplies the sum of x and y:

4*(x+y)


The sum of [4 multiplies x and y]

4*x+y

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Mrs. Williams is deciding between two field trips for her class. The Science Center charges $120 plus $5 per student. The Dino D
DanielleElmas [232]

Answer:

The Science Center charge less than the Dino Discovery museum for more then 10 students

Step-by-step explanation:

Let us assume that the number of students are x .

Let us assume that the total charge for x students be y.

As given

Mrs. Williams is deciding between two field trips for her class.

The Science Center charges $120 plus $5 per student.

Than the equations becomes

y = 120 + 5x

The Dino Discovery Museum simply charges $7 per student.

y = 7x

Than

120 + 5x < 7x

120 < 7x - 5x

120 < 2x

\frac{120}{12} < x

10 < x

Therefore the Science Center charge less than the Dino Discovery museum for more then 10 students.

8 0
3 years ago
Can you plz help me plz someone help me I need the help from you guys plz help me plz I need it badly pls someone help me plz an
natali 33 [55]

Answer: b

Step-by-step explanation:

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=9%20-%203%20%20%5Cdiv%20%20%5Cfrac%7B1%7D%7B3%7D%20%20%2B%201" id="TexFormula1" title="9 - 3
Sveta_85 [38]

Given:

The expression is

9-3\div \dfrac{1}{3}+1

To find:

The value of given expression.

Solution:

We have,

9-3\div \dfrac{1}{3}+1

BODMAS : Bracket, Order, Division, Multiplication, Addition, and Subtraction.

Using BODMAS, first we need to perform division in the given expression.

=9-(3\div \dfrac{1}{3})+1

=9-(3\times 3)+1

=9-9+1

Now, apply addition.

=(9+1)-9

=10-9

Now, apply subtraction.

=1

Therefore, the value of given expression is 1.

3 0
2 years ago
An SRS of 27 students at UH gave an average height of 5.6 feet and a standard deviation of .1 feet.Construct a 90% confidence in
Juliette [100K]

Answer:

Option a) [5.567, 5.633]                

Step-by-step explanation:

We are given the following in the question:  

Sample mean, \bar{x} = 5.6 feet

Sample size, n = 27

Alpha, α = 0.10

Sample standard deviation, s = 0 .1 feet

90% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 26 and}~\alpha_{0.10} = \pm 1.7056  

5.6 \pm 1.7056(\displaystyle\frac{0.1}{\sqrt{27}} ) = 5.6 \pm 0.0328 = (5.5672 ,5.6328) \approx (5.567,5.633)  

Option a) [5.567, 5.633]

7 0
3 years ago
The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square i
77julia77 [94]

The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square inches. Which equation below could be used to find h, the height of this prism, in inches?

The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square inches. Which equation below could be used to find h, the height of this prism, in inches?

5 0
3 years ago
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