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Lera25 [3.4K]
3 years ago
7

Which expression is equivalent to 30 ÷ (3 + x)

Mathematics
2 answers:
Roman55 [17]3 years ago
7 0
It’s B :)

i can’t think of how to explain it sorry
Lena [83]3 years ago
4 0

Answer:

<h3>Answer would be B because addition is commutative that is, a + b = b + a </h3>

<u>So </u><u>answer </u><u>would </u><u>be </u><u>3</u><u>0</u><u> </u><u>÷</u><u> </u><u>(</u><u>X </u><u>+</u><u> </u><u>3</u><u>)</u>

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-8=-(x+4) i need help with this problem!!
kozerog [31]

X=4

You have to distribute the negative sign for everything in the parentheses. After that you add x to the other side then add 8 to the opposite side to move them. Then your answer is 4.

5 0
3 years ago
Determine whether the statement is true or false. Justify your answers.
marusya05 [52]

Answer:

The graph of y = f(-x) is a reflection of the graph of y = f(x) in the x-axis. ⇒ False

The graph of y = -f(x) is a reflection of the graph of y = f(x) in the y-axis. ⇒ False

Step-by-step explanation:

<em>Let us explain the reflection about the axes</em>

  • If a graph is reflected about the x-axis, then the y-coordinates of all points on it will opposite in sign

Ex: if a point (2, -3) is on the graph of f(x), and f(x) is reflected about the x-axis, then the point will change to (2, 3)

  • That means reflection about the x-axis change the sign of y
  • y = f(x) → reflection about x-axis → y = -f(x)

  • If a graph is reflected about the y-axis, then the x-coordinates of all points on it will opposite in sign

Ex: if a point (-2, -5) is on the graph of f(x), and f(x) is reflected about the y-axis, then the point will change to (2, -5)

  • That means reflection about the y-axis change the sign of x
  • y = f(x) → reflection about y-axis → y = f(-x)

<em>Now let us answer our question</em>

The graph of y = f(-x) is a reflection of the graph of y = f(x) in the x-axis.

It is False because reflection about x-axis change sign of y

The graph of y = -f(x) is a reflection of the graph of y = f(x) in the x-axis

The graph of y = -f(x) is a reflection of the graph of y = f(x) in the y-axis.

It is False because reflection about y-axis change sign of x

The graph of y = f(-x) is a reflection of the graph of y = f(x) in the y-axis

7 0
2 years ago
In the figure below, which angle pair is a pair of corresponding angles?
Hoochie [10]
The answer is D. Angle 4 and angle 8 are corresponding...
6 0
3 years ago
Read 2 more answers
Using f for the number of friends. Write an expression to represent how much Jack and Jenn will spend on breakfast if everyone g
antoniya [11.8K]

Answer:

$1.25f + $0.75f

Step-by-step explanation:

The cost of one bagel is $1.25 and cream cheese costs $0.75 per person. The total amount Jack and Jenn will spend on breakfast depends on the number of friends that eat breakfast.

to get the total amount spent on breakfast, multiply the cost of bagel by the number of friends and the cost of cream cheese by the number of friends. Add these numbers

The total amount spent on food = $1.25f + $0.75f

5 0
2 years ago
Solve the following problem, using mixed number format.<br><br> 2 and 1/2 + 1 and 1/16 =
77julia77 [94]

Step-by-step explanation:

2 1/2 + 1 1/16

Adding whole number parts and fraction parts together,

(2+1) + (1/2 + 1/16)

= 3 + (1*8/2*8 + 1/16)

= 3 + (8/16 + 1/16)

= 3 + 9/16

= 3 and 9/16

6 0
2 years ago
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