3 years ago

The four-digit numeral 3AA1 is divisible by 9. What digit does A represent?

Mathematics

1 answer:

Andreas93 [3]3 years ago

6 0

Answer:

Step-by-step explanation:

Trial and error. Start with 1 and go to 9

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Use the box method to distribute and simplify (-5x-2)(-2x^2+6x).

Mkey [24]

Answer:

$10x^{3} - 26x^{2} - 12x$

Step-by-step explanation:

1) Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd.

$10x^{3} - 30x^{2} + 4x^{2} -12x$

2) Collect like terms.

$10x^{3} + (-30x^{2} +4x^{2} )-12x$

3) Simplify.

$10x^{3} - 26x^{2} -12x$

Therefor, the answer is, 10x^3 - 26x^2 - 12x.

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2 years ago

Solve for d.<br> -4d + 7 = 3d

STALIN [3.7K]

Step-by-step explanation:

The Answer Is

-4d + 7 = 3d

So, 7 = 3d + 4d

Then, 7 = 7d

•d = 7/7

= 1

So D = 1.

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3 years ago

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pantera1 [17]

200 grams, b/c 1.6 kg converted to grams is 1600grams, divided by 8 pots; therefore 200g

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3 years ago

A recipe for lemonade calls for 1 cup of sugar and 6 cups of water. How much sugar is used per cup of water?

grandymaker [24]

The answer is 1/6, or .16666...

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3 years ago

. A tennis supply store pays a wholesaler $90 for a tennis racquet and sells it for $144. What is the markup rate?

I am Lyosha [343]

Formula : Amount of change / Original amount

1. 144 - 90/ 144

2. Subtract 144 and 90

3. 54/ 144

4. Divide 54 by 144

5 0.375

6 Move the decimal two places to the right.

7. 37.5 %

Answer: 37.5% is the markup rate

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3 years ago