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Luba_88 [7]
3 years ago
13

13 x (-3)-7 x (-3) what is the answer to this problem x means multiplication

Mathematics
2 answers:
iren2701 [21]3 years ago
7 0

138 should be your answer.

:)

babunello [35]3 years ago
5 0

Please Excuse My Dear Aunt Sally.

Parentheses, Exponents, Multiplication, Division, Addition, Subtraction


This is a math expression that tells you the order of operations. It does not matter the order that you multiply these numbers in for this equation.


13 * (-3) * (-7) * (-3) = ?

13 * (-3) = -39          -7 * (-3) = 21 (Negatives cancel out)

-39 * 21 = -819


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Take the number of envelopes and divide by the number of minutes

460 envelopes / 30 minutes

15.333333.... envelopes per minute

15 1/3 envelopes in 1 minutes

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Find the average of$ 1148.37,$1760.44,$1143.57,and 1336.17 then round to the nearest cent
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Answer:

The equation has the form: y = a + b * x where a and b are constant numbers. The variable x is the independent variable, and y is the dependent variable. Typically, you choose a value to substitute for the independent variable and then solve for the dependent variable.

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The store is selling lemons at $0.39 each. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough l
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3 years ago
Complete the page for 15 points.
sergey [27]

Answer:

1. 15, 16, 17

2. 21, 23, 25

3. 44, 46, 48

4. -4, -3, -2

Step-by-step explanation:

1)

Step 1. Writing an equation

Let's set x as the second number in the equation.

This means that the first number is x-1, and the third number is x+1.

We know that the sum of the three numbers is 48, so:

(x-1)+x+(x+1)=48

Step 2. Solving the equation

x-1+x+x+1=48

x+x+x-1+1=48

3x=48

x=16

<em>So the answer is 15, 16, 17</em>

2)

Again, let's set x as the middle number.

Odd numbers are 2 numbers apart, so the first number is x-2, and the third is x+2.

This means that the equation must be:

(x-2)+x+(x+2)=69

x+x+x=69

3x=69

x=23

<em>The numbers are 21, 23, and 25</em>

3)

x will be the middle number

Even numbers are 2 numbers apart, so the first number is x-2, and the third is x+2.

This means that:

x-2+x+x+2=138

x+x+x=138

3x=138

x=46

<em>The numbers are 44, 46, and 48.</em>

4)

x will be the middle number.

x-1=first number, x+1=third number

x-1+x+x+1=-9

3x=-9

x=-3

<em>The numbers are -4, -3, and -2.</em>

3 0
3 years ago
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