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3 years ago

Write a rule for determining the sign of the product when multiplying a positive and a negative integer

Mathematics

2 answers:

Flura [38]3 years ago

5 0

1 Negative+ 1 Negative = A positive

1 negative + 1 positive = A negative

1 positive + 1 positive = A positive

Hope this helped :)

elena-14-01-66 [18.8K]3 years ago

5 0

think of it as this:

two of the same signs are posative

two different signs are negative

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The length of a rectangle is four more than three times it’s width. The perimeter is 64 inches

Lelu [443]

Answer:

Length: 25, Width: 7

Step-by-step explanation:

Let the width be represented by w. We can then assume that the length is equivalent to 3w+4

So, we can set the equation 2(3w+4)+2(w). Simplify to 8w+8=64

Simplify the equation and solve for w, which is 7

Plug into the the length, which is 3w+4

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3 years ago

Read 2 more answers

Factor the polynomial x2 + 18x + 81 as the product of two binomials

hram777 [196]

Answer:

$(x+9)^2$

Step-by-step explanation:

We have the polynomial x^2 + 18x + 81 and are being asked to factor this into two binomials.

A rule that I follow is what two numbers multiplied make c (in this case 81) and when added make b (in this case is 18).

So what two numbers when :

A. Multiplied make 81

B. Added make 18

This would be 9.

Now that we have the answer, we can put it into binomials.

(x + 9)(x + 9)

Since these are the same, we can combine it and make it into one.

$(x+9)^2$

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3 years ago

Type the correct answer in each box. Use numerals instead of words.

lora16 [44]

Answer:

the answer is -4x^2-3x-5

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3 years ago

A bird feeder 24 times using 6 cups each time. A bag of seeds holds 32 cups. How many bags of seed did he use?

pishuonlain [190]

First, let's find how many cups the bird feeder uses 24 times.

24 x 6 = (20 x 6) + (4 x 6) = 120 + 24 = 148 cups.

Now, let's divide 148 by 32.

148 ÷ 32 = 4.625 bags of seed.

I hope this helped!

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