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Sedbober [7]
2 years ago
9

Evaluate 16 - 4 ÷ 4 a 3b 2c 5d 15

Mathematics
2 answers:
Tasya [4]2 years ago
6 0
Your answer is d 15 hope this is helpful
Alenkasestr [34]2 years ago
4 0
The answer is D. 15 plz give me brainliest answer
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I NEED HELP!!!!!!
omeli [17]
The answer is 3. because you go -4 on the y axis and go up by 3
3 0
3 years ago
What is the median of these numbers, 78,57,45,70,72? *
lana66690 [7]

Answer:

Step-by-step explanation:

arranging in ascending order

45,57,70,72,78

number of terms=5

median=(5+1)/2=3rd

or median =70

3 0
3 years ago
Read 2 more answers
PLZZZZ SOMEONE NEED HELP!!!!!!
Paha777 [63]
The graph would shift 5 units left and 3 units up.
3 0
3 years ago
X - 3y = 17<br> x = 2y + 13<br> What are the steps for solving these?
lbvjy [14]

Answer:

  (x, y) = (5, -4)

Step-by-step explanation:

The second equation gives you an expression for x that can be substituted into the first equation.

  (2y +13) -3y = 17 . . substitute for x in the first equation

  -y = 4 . . . . . . . . . . . subtract 13 and simplify

  y = -4

  x = 2(-4) +13 = 5 . . . use the second equation to find the value of x

The solution is (x, y) = (5, -4).

_____

<em>Additional comment</em>

When faced with a system of linear equations, the first step is to look at them and observe where the variable terms are, and any relationships between coefficients. Several options are generally open to you for solving the equations. Methods generally taught first are ...

  • substitution
  • elimination

<em>Substitution</em> is handy when one of the variables or variable terms can be written (easily) in terms of the other variable. <em>Elimination</em> is handy when some simple multiple of one of the equations can be added to the other equation to cancel one of the variable terms (eliminate it).

Other available methods include matrix methods, Cramer's rule, and graphing. Working knowledge of all of these methods will help you identify the one that will be easiest to use in any given situation.

The availability of calculators able to use these methods greatly simplifies the task of finding a solution. It is simply a matter of entering the equations in the appropriate form.

One of my favorites is the graphing calculator, which only requires you type in the given equations and click on the solution point to find its coordinates.

4 0
2 years ago
Students in a class were surveyed about the number of children in their families. The results of the survey are shown in the tab
ki77a [65]

Answer:

1/5

Step-by-step explanation:

Since the surveys are chosen with replacement (the first one is replaced before the second is chosen), the events are independent.  This means that the probability of both together is the product of each event's probability.

The probability of choosing a survey that indicates 4 children in the family is 8/60, since there are 8 surveys with 4 children out of a total of (9+18+22+8+3) = 60 surveys.

The probability of choosing a survey that indicates 1 child is 9/60, since there are 9 surveys with 1 child out of a total of 60.

Together this gives us

8/60(9/60) = 72/360 = 1/5

3 0
3 years ago
Read 2 more answers
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