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2 years ago

3. Simplify the expression by combining like terms. 10x+2x+4y

Mathematics

1 answer:

ch4aika [34]2 years ago

4 0

It is D, when you simplify something you combine all the x’s and y’s together to make the problem simple :)

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What multiples to -48 and adds to 2

gogolik [260]

8 x -6 = -48
8 -6 = 2

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2 years ago

Yis inversely proportional tox.Wheny=50,x=4Work outywhenx=8

quester [9]

Answer:

55555

Step-by-step explanation:

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2 years ago

What is equivalent to 6/7

REY [17]

The answer is 12/14 just times 2 to it i think

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2 years ago

Read 2 more answers

Solve the inequality. Graph the solution set, and write it using interval notation. |5x+4|less than or equal to 10

aniked [119]

we have the inequality

$\lvert5x+4\rvert\leq10$

step 1

Find out the first solution (positive case)

$\begin{gathered} +(5x+4)\leq10 \\ 5x\leq10-4 \\ 5x\leq6 \\ x\leq\frac{6}{5} \\ x\leq1.20 \end{gathered}$

The first solution is all real numbers less than or equal to 1.20

Interval (-infinite,1.20]

step 2

Find out the second solution (negative case)

$-(5x+4)\leq10$

Multiply by -1 both sides

$\begin{gathered} (5x+4)\ge-10 \\ 5x\ge-10-4 \\ 5x\ge-14 \\ x\ge-\frac{14}{5} \\ x\ge-2.8 \end{gathered}$

The second solution is all real numbers greater than or equal to -2.8

the interval [-2.8, infinite)

step 3

Find out the solution to the given inequality

The solution is

[-2.8, infinite) ∩ (-infinite,1.20]=[-2.8,1.20]

the solution is the interval [-2.8,1.20]

see the attached figure to better understand the problem

8 0

6 months ago

The course grade in a statistics class is the average of the scores on five examinations. Suppose that a student's scores on the

nadya68 [22]

Answer:

84 is the highest possible course average

Step-by-step explanation:

Total number of examinations = 5

Average = sum of scores in each examination/total number of examinations

Let the score for the last examination be x.

Average = (66+78+94+83+x)/5 = y

5y = 321+x

x = 5y -321

If y = 6, x = 5×6 -321 =-291.the student cannot score -291

If y = 80, x = 5×80 -321 =79.he can still score higher

If If y = 84, x = 5×84 -321 =99.This would be the highest possible course average after the last examination.

If y= 100

The average cannot be 100 as student cannot score 179(maximum score is 100)

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2 years ago