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Gala2k [10]
3 years ago
6

If x = 6 and y = –2, evaluate the following expression: 7(2x – 3y)

Mathematics
2 answers:
Lorico [155]3 years ago
5 0

Answer:

14x-21y

Step-by-step explanation:

Darina [25.2K]3 years ago
5 0

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. This is:

  7(2x – 3y)

= 7(2(6) – 3(-2))

= 7(12 + 6)

= 7(18)

<h2>= 126</h2>
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Zack, Jack and Sasha earned £250 altogether delivering leaflets.
AleksAgata [21]

Answer:

Zack earned £125, Jack earned £75, and Sasha earned £50

Step-by-step explanation:

Considering the number of leaflets delivered

Zack 50%, Jack 30% and Sasha 20%

Total delivered = 50 + 30 + 20 = 100%

If they earn £250 on the 100% delivery, then each will have as shown below

Zack = (50/100)*250

= 5*25

= £125

Jack = (30/100)*250

= 3*25

= £75

Sasha = (20/100)*250

=2*25

= £50

5 0
4 years ago
Read 2 more answers
Solve each equation. Check your solution.<br><br><br> 3x 32 = 7x + 28
skad [1K]

Answer:

x= 28 /89

Step-by-step explanation:

3x(32)=7x+28

Step 1: Simplify both sides of the equation.

96x=7x+28

Step 2: Subtract 7 from both sides.

96x   7x+28

−7             −7

89x=28

Step 3: Divide both sides by 89.

89x /89 = 28 /89

6 0
3 years ago
\Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
vazorg [7]

Answer:

If it goes down half of the past one it would be 1/8.

I could be wrong but i need one more number to be 100%

Step-by-step explanation:


3 0
3 years ago
Can someone please expand and simplify this
laila [671]

Pasos  

3(3−1)

Usa la propiedad distributiva para multiplicar 3 por 3−1.

(3)2−3

El cuadrado de 3 es 3.

3−3

B

Pasos  

5(10+2)

Usa la propiedad distributiva para multiplicar 5 por 10+2.

510+52

Factorice 10=5×2. Vuelva a escribir la raíz cuadrada del producto 5×2 como el producto de las raíces cuadradas 52.

552+52

Multiplica 5 y 5 para obtener 5.

52+52

Para multiplicar 5 y 2, multiplique los números bajo la raíz cuadrada.

52+10

4 0
2 years ago
Solve the equation for all real solutions. <br> 15n^2-22n+8=0
Salsk061 [2.6K]

I hope it helps you......

7 0
3 years ago
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