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ikadub [295]
3 years ago
9

What is another way to write to 72 – (–25)?

Mathematics
2 answers:
Rus_ich [418]3 years ago
6 0
72 - (-25) = 72 + 25
Volgvan3 years ago
6 0
The correct answer to this question is this one: "72 + 25"

This is how being revised:
first, the sign of 72 is positive (by default) because there is no "minus" sign.
Second, the sign of 25 is negative because of the negative sign.

72 - (-25) is just like saying 72 - 1 * (-25)
which means that -25 is multiplied with -1. Negative times negative is positive.
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Fill in the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions: 2a
sdas [7]

Answer:

-15

Step-by-step explanation:

We proceed as follows;

In this question, we want to fill in the blank so that we can have the resulting expression expressed as the product of two different linear expressions.

Now, what to do here is that, when we factor the first two expressions, we need the same kind of expression to be present in the second bracket.

Thus, we have;

2a(b-3) + 5b + _

Now, putting -15 will give us the same expression in the first bracket and this gives us the following;

2a(b-3) + 5b-15

2a(b-3) + 5(b-3)

So we can have ; (2a+5)(b-3)

Hence the constant used is -15

8 0
3 years ago
If some one could help me with these three questions I will be stoked!!!please please help me my teacher didn’t walk us through
salantis [7]

17) replace the given number for "x" and evaluate

a) x² + 2x + 1   ; when x = 3

  3² + 2(3) + 1

= 9 + 6 + 1

= 16

b) x² + 2x + 1   ; when x = -4

  (-4)² + 2(-4) + 1

= 16 - 8 + 1

= 9

c) x² + 2x + 1   ; when x = 3

  (-22.872)² + 2(-22.872) + 1

= 523.128384 - 45.744 + 1

= 478.384384

18) The dependent variable is affected by the other variable and is the "output"   The independent variable is the input.

a) y = 3x - 5;    "x" is the independent variable

b) the time of day is the independent variable  (you would input the time of day to calculate the temperature).

19) Let the x-axis represent the length of the lumber cut off and the y-axis represent the length of the lumber remaining.

5 0
3 years ago
Solve each equation. List any restrictions. Check your solutions. <br> 12/x+11=17
Thepotemich [5.8K]
12+11x=17x11x+12=17x
(both sides of the equation)
11x+12−17x=17x−17x
(Subtract 17x from both sides)
−6x+12=0−6x+12−12=0−12
(Subtract 12 from both sides)
−6x=−12−6x−6=−12−6
(Divide both sides by -6)
x=2
Check answers. (Plug them in to make sure they work.)
x=2
(Works in original equation)

6 0
3 years ago
Katie bought 9 writing utensils for a total of $22.00. Pens cost $3.00 and pencils cost $2.00. How many pencils did she buy? You
Pavel [41]
Figure it out stop being lazy and asking for help
6 0
3 years ago
Georgia's height is 4 inches less than Sienna's height. Georgia is
iris [78.8K]
Answer:

58+4=62 Sienna’s height is 62 inches

Explanation:

Sienna’s height is 62 inches because Georgia’s height is 58 inches and she is shorter by 4 inches which means you have to add 58+4 which would equal 62.
3 0
3 years ago
Read 2 more answers
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