What is the product of -3 and 5?
O -15
08
a
08
O 15

Answers

Answer 1

Answer:

Answer:

A. -15

Step-by-step explanation:

First, ignore the negative sign and simply pretend the problem is asking for the product of 3 and 5.

When multiplying a by b, it's essentially the same as adding a to itself b times. Here, we multiply 3 by 5, so add 3 to itself 5 times: 3 + 3 + 3 + 3 + 3 = 15.

Now, look at the negative sign. When we multiply two numbers of different signs (one is negative and one is positive), the result is always negative. However, when we multiply two numbers of the same sign (either both positive or both negative), the result is always positive.

Here, we have one negative and one positive, which means the result should be negative. So, add a negative sign to 15 to get -15.

The answer is A.

Answer 2

Answer:

-15

Step-by-step explanation:

Product of a and b is:

a × b

Similarly, the product of -3 and 5 is:

-3 × 5

-15

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The side lengths of the figure below are given in centimeters.If the perimeter of this figure is 78 cm, what is the value of x?

Answers

Answer:

x=-12 or 6

lol this was so long ago.

this is elemantry but the answer comes out radical. what?,,,

What is the answer to -6+7x-6x=3

Answers

Hi!

-6+7x-6x = 3
-6+x = 3
x = 3+6
x = 9

Answer:

x = 9

7 is what percent of 105

Answers

$105* (x)/(100) =7 \n \n (105x)/(100) =7 \n \n 105x=700 \n \n x=6.67$

6.67%

6.67

Step-by-step explanation:

Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.

Answers

The number halfway between 27 times 38 and 33 times 38 is 1140.

What is equation modelling? What is a mathematical equation and expression?

Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.

A mathematical equation is used to equate two expressions.

Given is 27 times 38 and 33 times 38.

Let the number be [x]. Then -

[x] = 1/2 x {(27 x 38) + (33 x 38)}

[x] = 1/2 x {38 x 60}

[x] = 19 x 60

[x] = 1140

Therefore, the number halfway between 27 times 38 and 33 times 38 is 1140.

To solve more questions on equations, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ2

$27*38=1026\n 33*38=1254\n x-between\ number\n x=(1026+1254)/(2)\n x=(2280)/(2)\n x=1140$

Devon is buying 3 greeting cards that cost $0.97 each. How can rounding be used to estimate the total cost of the cards?Since each card is about $1, the total cost is approximately 3 + 1 = $4.
Since each card is about $1, the total cost is approximately 3 x 1 = $3.
Since he is buying about 10 cards, the total cost is approximately 10 x 0.97 - $9.70.
Since he is buying about 10 cards, the total cost is approximately 10+ 0.97 = $10.97.