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liq [111]
4 years ago
12

3(3x+9)=-5-2x what is x

Mathematics
1 answer:
-BARSIC- [3]4 years ago
3 0

Answer:

x=2.9

Step-by-step explanation:

3(3x+9)= -5-2x ( distribute)

9x+27= -5-2x (add 2x) (subtract 27)

11x= 32 ( divide by 11)

x= 2.9

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Use the elimination method to solve the system of equations. Choose the correct ordered pair. 5x - 2y = 9 3x + 4y = - 5 O A. (5,
marta [7]

Answer:

Step-by-step explanation:

4(5x-2y=9)

-2(3x+4y=-5)

20-20x-8y=36

+6x-6x-8y=10

36-20x=10+6x-6x

36-36-20x-6x=10

-26x=10-36

-26x/-26=-26/-26

x=1

3 0
3 years ago
Tyrell was late for class 3 times in the month of June. Each time he was late he missed 5 1/2 minutes of class time. what is the
Jobisdone [24]

Answer:

16 1/2 minutes

Step-by-step explanation:

<em>Multiply together</em>

5 1/2 * 3

=16 1/2

3 0
4 years ago
Read 2 more answers
Which expression is equivalent to (2to the third power) times -5?
Airida [17]

2 to the third power is 2³

so 2 to the third power times -5 is 2³ * (-5)

which on simplification will be 8* (-5) =-40

3 0
3 years ago
Max buys six donuts and a 300ml carton of juice for $3.50,susie buys four donuts and two 300ml carton of juice for $3.00,ben buy
Ivanshal [37]

Complete Question

Max buys six donuts and a 300ml carton of juice for $3.50,susie buys four donuts and two 300ml carton of juice for $3.00,ben buys eight donuts and five 300ml carton of juice for $6.50 How much is one donut? How much is one carton of drink

Answer:

The cost of

1 donut = x = $0.50

300ml carton of juice = y = $0.50

Step-by-step explanation:

Let the cost of

1 donut = x

300ml carton of juice = y

Max buys six donuts and a 300ml carton of juice for $3.50

6x + y = 3.50.....Equation 1

y = 3.50 - 6x

Susie buys four donuts and two 300ml carton of juice for $3.00

4x + 2y = 3...... Equation 2

Ben buys eight donuts and one 300ml carton of juice for $6.50

8x + 5y = 6.50......Equation 3

We substitute 3.50 - 6x for y in Equation 2

4x + 2y = 3...... Equation 2

4x + 2(3.50 - 6x) = 3

4x + 7 - 12x = 3

Collect like terms

4x - 12x = 3 - 7

-8x = -4

x = -4/-8

x = $0.50

Solving for y

y = 3.50 - 6x

y = 3.50 - 6(0.50)

y = 3.50 - 3.00

y = $0.50

Therefore:

The cost of

1 donut = x = $0.50

300ml carton of juice = y = $0.50

3 0
3 years ago
Which equation is represented on the graph?
Westkost [7]

[ Answer ]

\boxed{Y \ = \ X \ + \ 2}

[ Explanation ]

Y = X + 2 is saying that Y, is the X dot + 2.

When the X dot is on 0, we have to add 2 to get to where the Y dot is. X (0) + 2 = 2. That is where the Y dot is.

X (2) + 2 = 4. 4 is where the Y dot is,

Once you keep adding the X dots to 2, you will get the Y dots. That is why the equation is Y = X + 2. In order to get to Y, you need to add 2 to the X dot.

\boxed{[ \ Eclipsed \ ]}

3 0
4 years ago
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