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4 years ago

-10+5x=7x-4 You have to find x

Mathematics

1 answer:

Agata [3.3K]4 years ago

4 0

Answer:

Step-by-step explanation:

7x - 4 = 5x - 10

2x - 4 = -10

2x = -6

x = -3

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11. Find the product: (50z + 20)(10z + 4) ( 1 ) 12. Find the product: (88a + 80)(8a + 8) ( 1 ) 13. Find the product: (40y + zy)(

Vika [28.1K]

Answer:

11. $500z^{2} +400z+80$

12. $704a^2 + 1344a + 640$

13. $160y^2 + 44zy^2 + z^2y^2$

Step-by-step explanation:

11. $(50z + 20)(10z + 4) = ?$

Using Formula:

$(a+b) (c+d) = a(c+d)+b(c+d)$

$50z(10z+4) + 20(10z + 4) = \\\Rightarrow 500z^{2} + 200 z+200z+80\\\Rightarrow 500z^{2} +400z+80$

12. $(88a + 80)(8a + 8) = ?$

Using Formula:

$(a+b) (c+d) = a(c+d)+b(c+d)$

$\Rightarrow 88a(8a+8) + 80(8a + 8)\\\Rightarrow 704a^2 + 704a + 640a + 640\\\Rightarrow 704a^2 + 1344a + 640$

13. $(40y + zy)(4y + zy) = ?$

Using Formula:

$(a+b) (c+d) = a(c+d)+b(c+d)$

$\Rightarrow 40y(4y + zy) + zy(4y + zy)\\\Rightarrow 160y^2 + 40zy^2 + 4y^2z + z^2y^2\\\Rightarrow 160y^2 + 44zy^2 + z^2y^2\\$

7 0

3 years ago

Which of the following statements is true for the equation 2x+2=3x+1? The equation is never true. The equation is only true for

ipn [44]

346788887bh u h u u h j

7 0

3 years ago

When ordering the Kids' Lunch at Burger Universe, the customer must choose a size, whether or not to have cheese, a type of bun,

stepan [7]

Answer:

96 different possible choices.

Step-by-step explanation:

With problems like these, multiply all of the choices together,

such as 2*2*3*2*4.

Your answer would be 96.

7 0

3 years ago

Jack picked 10 ears of corn. He and two of his sisters ate two each. What is the amount of corn left represented as a

Burka [1]

ANSWER:

Jack picked 10 ears of corn. The amount of corn left is $\frac{2}{5}$ ears of initial corn.

SOLUTION:

Given, Jack picked 10 ears of corn.

Now the total corn present is 10 ears.

He and two of his sisters ate two each.

Then, remaining corn = 10 ears – eaten corn

= 10 – 2 (by him) – 2 (by his first sister) -2 (by his second sister)

= 10 – 6 = 4

Now, the amount of corn left in fraction is remaining corn divided by initial corn.

Left over corn = $\frac{remaining corn}{initial corn}$

$= \frac{4}{10} = \frac{2}{5}$

Hence, the amount of corn left is $\frac{2}{5}$ ears of initial corn.

5 0

4 years ago

Difference 7 7/8- 3 1/4

Nataly_w [17]

7 7/8 - 3 1//4 = 49/8 - 3/4 = 49/8 - 6/8 = 43/8 (or 5.375)

8 0

4 years ago