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4 years ago

what is 678×789 ? I need help on this problem and I don't feel working it out but if you know that would be great!

Mathematics

2 answers:

Levart [38]4 years ago

5 0

Answer:

534,942

Step-by-step explanation:

Step 1: Multiply

678 * 789

(600 * 700) + (600 * 80) + (600 * 9) + (70 * 700) + (70 * 80) + (70 * 9) + (8 * 700) + (8 * 80) + (8 * 9)

420000 + 48000 + 5400 + 49000 + 5600 + 630 + 5600 + 640 + 72

534,942

Answer: 534,942

Salsk061 [2.6K]4 years ago

3 0

Answer:

534942

Step-by-step explanation:

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Alfred has 10 more tokens than Clarissa. Clarissa has twice as many tokens as Benji. They have 85 tokens altogether. How many to

marysya [2.9K]

Answer:

Alfred has 40 tokens

Clarissa has 30 tokens

Benji has 15 tokens

Step-by-step explanation:

Let's give each person a variable:

A for Alfred

C for Clarissa

B for Benji

Now, we can take what the question is saying and convert them into equations:

Alfred has 10 more tokens than Clarissa can look like this:

A = C + 10

Since Alfred has 10 more coins than Clarissa we can take C and add 10 to find how many tokens Alfred has.

Clarissa has twice as many tokens as Benji looks like this:

C = 2B

Since Clarissa has twice as many tokens as Benji we can multiply B (how many tokens Benji has) by 2.

Lastly, they have 85 tokens all together:

A + B + C = 85

We have these 3 equations:

A = C + 10

C = 2B

A + B + C = 85

Now, we can substitute some variables:

A = (2B) + 10 Since C is equal to 2B we can substitute 2B in for C in the first equation.

We have found what A equals, we can plug that in to the last equation:

(2B) + 10 + B + C = 85

We can also substitute the second equation into the third equation:

(2B) + 10 + B + 2B = 85

Combine like terms:

5B + 10 = 85

Solve

5B = 75

B = 15

This means that Benji has 15 tokens. Now we can find how much the other children have:

C = 2(15) = 30

Clarissa has 30 tokens

A = 30 + 10

A = 40

Alfred has 40 tokens.

Answer:

Alfred has 40 tokens

Clarissa has 30 tokens

Benji has 15 tokens

Checking the Answer

A + B + C = 85

40 + 15 + 30 = 85

85 = 85

I hope this helps!!

- Kay :)

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3 years ago

What is 10 times 3 in standard form

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Standard form of 10 times 3 is 10 x 3

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3 years ago

Read 2 more answers

Plzzzz help me solve the first and second question...

Advocard [28]

(1)

we know that

potential will be added when cells are connected in series

so, the polarity must be same

positive of one cell must be connected to negative of another cell

we can see only one option

option-(i)......Answer

(2)

(A)

we know that

$R=\frac{V}{I}$

so, smaller value of I means larger value of R

so,

$R_3>R_2>R_1$

option-3.....Answer

(B)

we know that

maximum resistances can be obtained when resistors are connected in series

so,

$R=R_1+R_2+R_3+R_4+R_5$

$R=\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}$

$R=1$

so, option-4........Answer

(C)

we know that series combination

we add resistances

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3 0

3 years ago

Ms. Ito's art class used 2/3 of bottle of blue paint. If they used 1/4 as much red paint as blue paint. How many bottles of red

JulijaS [17]

The answer is 1/6 bottles of red paint. For how I got it was I multiplied 2/3*1/4 which was 2/12 and when u simplify it, your answer is 1/6. Hope this helped!!!

6 0

4 years ago

what is 678×789 ? I need help on this problem and I don't feel working it out but if you know that would be great!​

what is 678×789 ? I need help on this problem and I don't feel working it out but if you know that would be great!