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telo118 [61]
3 years ago
14

If x = 2, y = 3 and z = 4, calculate the value of each of the following algebraic expression: 3x + 3y =

Mathematics
1 answer:
MaRussiya [10]3 years ago
4 0
If x = 2 and y = 3 then it can be solve as

3(2) + 3(3)

6 + 9

15
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3 years ago
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Based on a survey, assume that 38% of consumers are comfortable having drones deliver their purchases. Suppose that we
Maslowich

Answer:

n = 4

x = 2

p = 38\%

q = 62\%

Step-by-step explanation:

Required

Find n, x, p and q

n always represent the population surveyed;

So:

n = 4

x represents the sample from the population

So:

x = 2

p always represents the given proportion

p = 38\%

Solving for q

p + q = 1

q = 1 - p

q = 1 - 38\%

q = 62\%

5 0
2 years ago
X=6. y=5. <br><br><br><br> 12×+3y <br>please help me​
IgorLugansk [536]

Answer:

Your answer: 87

Step-by-step explanation:

Since you are given what both variables are in the equation, this problem requires you to plug it in.

12(6)+3(5)= ?

You can either do this in a calculator, or do this one step at a time.

12(6)=72

3(5)=15

72+15=87

7 0
3 years ago
Which of the following are rational numbers {7,-5,2/3,5.79,,√13,√-4}
Ilia_Sergeevich [38]

Answer:

7, -5, 2/3, 5.79

Step-by-step explanation:

rational numbers are numbers you can put in fraction form. \sqrt{13} is not a perfect square, therefore you cannot put it in fraction form. \sqrt{-4} is an imaginary number. Rational numbers are in the Real Numbers category, so it is not a rational number.

7 0
3 years ago
Solve (algebraically by any method) 3x to the 2 power +8x - 4= 0
Ratling [72]
3 x^{2} + 8x +(-4) = 0
x = <u>-b + √ b² - 4ac</u>
               2a
x = <u>-8 + √ 8² - 4(3)(-4)</u>
                 2(3)
x = <u>-8 + √64 - 48 </u>
               6
x = -<u>8 + √16
</u>           6<u>
</u>x = -<u>8 + 4 </u>      x = <u>-8 - 4</u>
         6                    6<u>
</u>x = <u>-4  </u>            x = <u>-12</u>
      6                       6    
x =<u> -2 </u>             x = -2<u>
</u>      3   <u>
</u>
5 0
3 years ago
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