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swat32
3 years ago
7

Which of these is the algebraic expression for "4 times the sum of 2 and y?"

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
3 0

Answer:

4(2 + y)

Step-by-step explanation:

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|3a| − 54b , if a = -7 and b = 215
alisha [4.7K]

Answer:

-11,589

Step-by-step explanation:

|3a| − 54b

|3(-7)| − 54(215)

|-21| - 11610

21 - 11610

-11589

Best of Luck!

4 0
3 years ago
We need help finding the means of the sides of this figure.<br> (Photo attached)<br><br> Thank you
VikaD [51]

Answer:

3) 5

4) 8.2

5) 6.8

6)FG = 6.4

7) EF = 3.6

8)DF = 4.8

Step-by-step explanation:

From the attached triangle, using trigonometric ratio we can find ∠G as; tan^(-1) (6/8)

Thus, ∠G = 36.87°

Still using trigonometric ratios;

FG/8 = cos 36.87°

FG = 8 cos 36.87°

FG = 6.4

3) EF + FG = EG

Since EG is 10, mean of EF and FG = 10/2 = 5

4) mean of EG and FG = (10 + 6.4)/2 = 8.2

5) EF + FG = EG

Thus; EF = EG - FG

EF = 10 - 6.4

EF = 3.6

Mean of EG and EF = (10 + 3.6)/2 = 6.8

6) FG = 6.4

7) EF = 3.6

8) Using trigonometric ratio;

DF/8 = sin 36.87

DF = 8 × 0.6

DF = 4.8

8 0
3 years ago
Forty tickets at $10.50 each cost?
ANEK [815]

Answer:

This question isn't worded properly but I'll try my best to answer it. What I think you're trying to ask is "How much money would 40 tickets cost?"

Step-by-step explanation:

Well,  to make the multipulcation easier you would take away the zero just for now. It should look like this: 4x$10.50=42

Your answer is $42, but then you add the zero back on to that. So now the answer is $420.

<h2>$420 is your final answer</h2>

<em><u>Thanks, I hope this helped! If it did I wouldn't mind being mark brainlist!</u></em>

7 0
2 years ago
What is the solution-2|2.2x-3.3|=-6.6
mylen [45]

Solution, solve\:for\:x,\:-2\left|2.2x-3.3\right|=-6.6\quad :\quad x=0\quad \mathrm{or}\quad \:x=3

Steps:

-2\left|2.2x-3.3\right|=-6.6

\mathrm{Divide\:both\:sides\:by\:}-2,\\\frac{-2\left|2.2x-3.3\right|}{-2}=\frac{-6.6}{-2}

\mathrm{Simplify},\\\left|2.2x-3.3\right|=3.3

|f\left(x\right)|=a\quad \Rightarrow \:f\left(x\right)=-a\quad \mathrm{or}\quad \:f\left(x\right)=a,\\2.2x-3.3=-3.3\quad \quad \mathrm{or}\quad \:\quad \:2.2x-3.3=3.3

2.2x-3.3=-3.3,\\\mathrm{Add\:}3.3\mathrm{\:to\:both\:sides},\\2.2x-3.3+3.3=-3.3+3.3,\\\mathrm{Refine},\\2.2x=0,\\\mathrm{Multiply\:both\:sides\:by\:}10,\\.2x\cdot \:10=0\cdot \:10,\\\mathrm{Refine},\\22x=0,\\\mathrm{Divide\:both\:sides\:by\:}22,\\\frac{22x}{22}=\frac{0}{22},\\\mathrm{Simplify},\\x=0

2.2x-3.3=3.3,\\\mathrm{Multiply\:both\:sides\:by\:}10,\\2.2x\cdot \:10-3.3\cdot \:10=3.3\cdot \:10,\\\mathrm{Refine},\\22x-33=33,\\\mathrm{Add\:}33\mathrm{\:to\:both\:sides},\\22x-33+33=33+33,\\\mathrm{Simplify},\\22x=66,\\\mathrm{Divide\:both\:sides\:by\:}22,\\\frac{22x}{22}=\frac{66}{22},\\\mathrm{Simplify},\\x=3

\mathrm{Combine\:the\:ranges},\\x=0\quad \mathrm{or}\quad \:x=3

\mathrm{The\:Correct\:Answer\:is\:x=0\quad \mathrm{or}\quad \:x=3}

\mathrm{Hope\:This\:Helps!!!}

\mathrm{-Austint1414}

5 0
3 years ago
Read 2 more answers
Can someone help me with the graphing part??
vlabodo [156]

Answer:

In the picture above.

Step-by-step explanation:

Good luck.

6 0
4 years ago
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