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IrinaK [193]
3 years ago
8

Evaluate 9(4x – 15) if x = 3.

Mathematics
2 answers:
Sindrei [870]3 years ago
7 0

\implies {\blue {\boxed {\boxed {\purple {\sf {-27}}}}}}

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}

\: 9 \: (4x - 15)

Plugging in the value x = 3 in the above expression, we have

➼ \: 9 \: (4 \times 3 - 15)

➼ \: 9 \: (12 - 15)

➼ \: 9 \: ( - 3)

➼ \:  - 27

<h3><u>Note</u>:-</h3>

\sf\pink{PEMDAS\: rule.}

P = Parentheses

E = Exponents

M = Multiplication

D = Division

A = Addition

S = Subtraction

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

4vir4ik [10]3 years ago
5 0

Answer:

-27

Step-by-step explanation:

9(4x – 15)

Substitute 3 for x

9((4)(3) - 15)

Multiply (4)(3) = 12

9 ( 12 - 15 )

Subtract 12 - 15 = -3

9(-3)

Multiply 9(-3) = -27

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ELEN [110]

Answer:

Angle 1: 53

Angle 2: 72

Angle 3: 55

Angle 4: 127

Angle 5: 53

Angle 6: 66

Angle 7: 125

3 0
3 years ago
Line p has a slope of -3. Line t is perpendicular to line p and passes through the point (9,2). What is the equation for line t?
olganol [36]

Answer:

y = (1/3)x - 1

Step-by-step explanation:

The product of the slopes of perpendicular lines is -1. That makes the slopes of perpendicular lines negative reciprocals. Since line p has slope -3, the slope of line t is 1/3. Also, line t passes through point (9, 2).

y = mx + b

m = slope

y = (1/3)x + b

Now we replace x and y with the x- and y-coordinates of the given point, respectively, and we solve for b.

2 = (1/3)(9) + b

2 = 3 + b

b = -1

Now we replace b with -1.

y = (1/3)x - 1

8 0
3 years ago
Please help me TT,,,
mars1129 [50]
The correct answer is 63
5 0
3 years ago
If a+b=9 and ab=18,find the value of a and b.
Blizzard [7]

Answer:

Given:

a + b = 9

=> a = 9 - b

Given:

a x b = 18

=> (9 - b) x b = 18

=> 9b - b^2 = 18

=> b^2 - 9b + 18 = 0

=> (b - 3)(b - 6) = 0

=> b = 3 => a = 6

=> b = 6 => a = 3

Hope this helps

:)

3 0
3 years ago
Need hello fast I don’t know what to do
Free_Kalibri [48]

35 + 14
The greatest common factor for both is 7. Factor out 7

7(5 + 2) is your answer

Hope this helps

8 0
3 years ago
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