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4 years ago

12

Use the distributive property to remove the parentheses. -2(5u - 3x-6)

1 answer:

melamori03 [73]4 years ago

7 0

Answer:

I think it would be: -10u - 6x 12

Step-by-step explanation:

(step 1) -2(5u - 3x-6) "First you need to times -2 by 5, 3 and -6"

that should give you -10u - 6x 12

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How do solve this?? please

aksik [14]

Answer:

m = - 3

n = 2

Step-by-step explanation:

It can be solved using laws of exponents as given below:

$5 {x}^{n} y(2 {x}^{4} {y}^{m} ) = \frac{10 {x}^{6} }{ {y}^{2} } \\ \\ (5 {x}^{n} .2 {x}^{4} )(y. {y}^{m} ) = 10 {x}^{6} {y}^{ - 2} \\ \\\cancel {10}\:\: {x}^{n + 4} . {y}^{m + 1} = \cancel {10}\:\: {x}^{6} {y}^{ - 2} \\ \\ {x}^{n + 4} . {y}^{m + 1} = {x}^{6} {y}^{ - 2} \\equating \: like \: terms \: on \: both \: sides \\ \\ {x}^{n + 4} = {x}^{6} \\ \\ \implies \: n + 4 = 6 \\ \\ n = 6 - 4 \\ \\ \huge \red{n = 2} \\ \\ {y}^{m + 1} = {y}^{ - 2} \\ \\ \implies \: m + 1 = - 2 \\ \\ m = - 2 - 1 \\ \\ \huge \purple{m = - 3}$

6 0

3 years ago

Ajogger goes 0.3 km east and then turns south. If the jogger finishes 0.5 km from the starting point, how far south did the jogg

Illusion [34]

Answer:

he went 0.2km south

Step-by-step explanation:

7 0

3 years ago

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If youre 20 in 2017 how old were you in 2008

mars1129 [50]

You were 11 years old

6 0

3 years ago

I need help 2x + 1 when x = 2

jenyasd209 [6]

Answer:

2(2) + 1 = 5

Step-by-step explanation:

6 0

3 years ago

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3x+2y=7 y=3x-19 could someone show me a step by step for this equation for substitution

Vitek1552 [10]

Answer:

$\boxed {\boxed {\sf (5,-4)}}$

Step-by-step explanation:

We are given the equations:

$3x+2y=7 \\y=3x-19$

Since we know what y is equal to, we can substitute that expression in for y in the first equation.

$3x+2(3x-19)=7$

Distribute the 2. Multiply each term inside the parentheses by 2.

$3x+(2*3x)+ (2*-19)=7$

$3x+6x+-38= 7$

Combine the like terms (the terms with variables).

$9x-38=7$

Since we are solving for x, we must isolate the variable. 38 is being subtracted and the inverse of subtraction is addition. Add 38 to both sides.

$9x-38+38=7+38 \\9x=7+38\\9x=45$

Now x is being multiplied by 9. The inverse of multiplication is division. Divide both sides by 5.

$9x/9=45/9\\x=45/9\\x=5$

Now we know what x is equal to and can substitute the value into the second equation.

$y=3x-19$

$y=3(5)-19$

Multiply.

$y=15-19$

Subtract.

$y= -4$

Coordinate points are written as (x,y). Therefore, the solution is (5, -4).

4 0

3 years ago

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