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trasher [3.6K]
4 years ago
11

Simplify this expression (7+5)+4•13-12

Mathematics
1 answer:
Harlamova29_29 [7]4 years ago
7 0
Remember to use PEMDAS (Parentheses, Exponents, Multiplication ⇔ Division, Addition ⇔ Subtraction)

(7 + 5) + 4 · 13 - 12   Add 7 and 5
   12 + 4 · 13 - 12      Multiply 4 and 13
     12 + 52 - 12        Add 12 and 52
         64 - 12            Subtract 12 from 64
             52
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What is the equation of the line, in point-slope form, that passes through the points (-7, -10) and (-6, -8)?
Softa [21]

Hi!

<h3>The equation of point slope form is</h3>

<u>y = sx + b</u>

We need to find s and b

s = slope

b = y intercept

-------------------------------

<h3>To find the slope, use this formula. </h3>

\frac{y2-y1}{x2-x1}

Put in the values.

\frac{-8-(-10)}{-6-(-7)} = \frac{2}{1}simplify = 2

The slope is 2.

<u>y = 2x + b</u>

------------------------------------

<h3>Now we need to find the y intercept. Put in a point, and solve for b. </h3>

-8 = 2 * -6 + b

-8 = -12 + b

4 = b

The y intercept is 4.

<u>y = 2x + 4</u>

<h2>The answer y = 2x + 4</h2>

Hope this helps! :)

-Peredhel

6 0
3 years ago
A rectangular garden has a width of 67 inches and a length of 92 inches. What is the perimeter of the garden in feet? Group of a
Archy [21]
The answer is 13.25
67+92= 159
159 divided by 12= 13.25
3 0
3 years ago
Help :))))))))))))))) thx
Drupady [299]

Answer:

40 cm

Step-by-step explanation:

7 0
3 years ago
The product of 45/87 and --9/10 is​
grandymaker [24]

Answer:

0.4655172413793

Step-by-step explanation:

45/87 ×-9/10 i

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0.4655172413793

7 0
3 years ago
Two twin sisters, Gwen and Jackie, are both 20 years old in the year 2050. Jackie takes off on a round-trip to Vega, 25 light-ye
Contact [7]

Answer:

C. about 25 years.

Step-by-step explanation:

We have been given that two Jackie takes off on a round-trip to Vega, 25 light-years away. She travels at an average speed close to the speed of light, say, 0.9999c.

To find time it will take Jakie to reach Vega, we will divide the distance of Vega by Gwen's speed.

\text{Time}=\frac{\text{Distance}}{\text{Speed}}

\text{Time}=\frac{25}{0.9999}

\text{Time}=25.00250  

\text{Time}\approx 25  

Therefore, it will take approximately 25 years for Jakie to reach Vega and option C is the correct choice.

6 0
3 years ago
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