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4vir4ik [10]
3 years ago
11

What is four hundred twenty times six

Mathematics
2 answers:
iVinArrow [24]3 years ago
7 0
2520 is the answer because adding 420 repeatedly 6 times has to be divisible by six(and I did the multiplying too) so the answer was obviously six.
lianna [129]3 years ago
6 0
To do this without a calculator, it may be easier to break the number into smaller parts.
420 * 6
= (400 * 6) + (20 * 6)
= 2400 + 120
= 2520

Hope this helps! :)
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Solve 2x+3y=2<br> 5x-y=-29<br> By elimination
Andreyy89

Answer:

\huge\boxed{x=-5,\ y=4\to(-5,\ 4)}

Step-by-step explanation:

\left\{\begin{array}{ccc}2x+3y=2\\5x-y=-29&\text{multiply both sides by 3}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+3y=2\\15x-3y=-87\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad17x=-85\qquad\text{divide both sides by 17}\\.\qquad\dfrac{17x}{17}=\dfrac{-85}{17}\\.\qquad\boxed{x=-5}\\\\\text{Substitute it to the second equation:}\\\\5(-5)-y=-29\\\\-25-y=-29\qquad\text{add 25 to both sides}\\\\-25+25-y=-29+25\\\\-y=-4\qquad\text{change the signs}\\\\\boxed{y=4}

5 0
3 years ago
What is the solution for the equation 5/3b^3-2b-5=2/b3-2
irinina [24]

Answer:

Option C is correct.

Step-by-step explanation:

Given Equation:

\frac{5}{3b^3-2b^2-5}=\frac{2}{b^3-2}

To find: Solution of the Equation.

Consider,

5(b^3-2)=2(3b^3-2b^2-5)

5b^3-10=6b^3-4b^2-10

6b^3-5b^3-4b^2+10-10=0

b^3-4b^2=0

b^2(b-4)=0

b² = 0   ⇒ b = 0

b - 4 = 0 ⇒ b = 4

Therefore, Option C is correct.

7 0
2 years ago
Read 2 more answers
Please help me solve this and what are the answers
mixas84 [53]

Answer:

5y=-2x - 3x

5y = -5x

5y + 5x = 0

5(y + x ) = 0

maybe

7 0
2 years ago
Avry and Barbara are each at home, 10 miles apart. They agree to meet up and begin walking toward one another. Avry walks at 3 m
zzz [600]

Answer: 2 hours

Step-by-step explanation:

If they both walk 5 miles an hour combined, then it would take 2 hours for them to walk 10 miles.

hope this helps

7 0
3 years ago
Please help, I need this done as well!
Igoryamba

Answer:

7

Step-by-step explanation:

94-87=7

7 0
2 years ago
Read 2 more answers
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