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dedylja [7]
2 years ago
10

12(5-5)+3x5 evaluate the expression

Mathematics
1 answer:
iogann1982 [59]2 years ago
4 0

Answer:

Using PEMDAS we can see that P or parenthesis is first so we would subtract 5 from 5 in the beginning.  That would result in a 0 which would then get multiplied with 12 to still have 0.

12(5-5) + 3 * 5

12(0) + 3 * 5

0 + 3 *5

Now that we completed that part, the only thing that we have left to do is to multiply the last two numbers, 3 and 5.

3*5

15

Therefore, our final solution is 15.

<u><em>Hope this helps!</em></u>

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Complete the missing value in the solution to the equation.
snow_lady [41]

Answer:

y = − 1

Hope this helps!

Step-by-step explanation:

Alright so this is our equation:

y − 3   =   2 ( x − 1 )

We will substitute:

x = − 1

So now our equation looks like this:

y − 3   =   2 ( −1 − 1 )

Now we will get rid of the parentheses:

y − 3    =   − 2 − 2

Solve the left side:

y − 3   =   − 4

Now add 3 on both sides to find out what y is:

y − 3   =   − 4

  +3         +3

Add:

y = − 1

Yay! We found our answer! Nice job everyone!

3 0
3 years ago
Can someone help me with number 4,5 and 6?
True [87]
4) You know slope-intercept form is y=mx+b. So using these two given points, you can find the slope! 

(-8,5)  (-3,10) [Use the y1-y2 over x1-x2 formula to solve for slope]

10 - 5         5
---------   = ----- = 1 
-3-(-8)         5

Hurray! You got a slope of one. Now substitute this back into your original equation:
y=mx+b --> y=1x+b 

Next, we find what our "b" is, or what our y-intercept is:
Using one of the previous points given, substitute them into the new equation:
[I used the point (-3, 10) ]

y=1x+b
10=1(-3)+b  SUBSTITUTE 
10=-3+b     MULTIPLY
10=-3+b
+3   +3    ADD
----------
13=b     SIMPLIFY 

So, now we have our y-intercept. Use this and plug it into the equation:
y=1x+b --> y=1x+13 

y=1x+13 is our final answer.



5) So for perpendicular lines, your slope will be the opposite reciprocal of the original slope. (Ex: Slope is 2, but perpendicular slope is -1/2) 

We have the equation y= 3x-1, so find the reciprocal slope! 
--> y=-1/3x-1 

Good! Now we take our given point, (9, -4) and plug it into the new equation:

y=-1/3x-1
-4=-1/3(9)+b   SUBSTITUTE and revert "-1" to "b", for we are trying to find the y-     -4=-3+b          intercept of our perpendicular equation. 
+3   +3            ADD
--------
-1=b    SIMPLIFY 

So, our final answer is y=-1/3x+(-1)

6) I don't know, sorry! :( 
4 0
4 years ago
PLEASE I NEED HELP CLICK ON THIS IMAGE
lesantik [10]

Answer:

261

Step-by-step explanation:

I took each number and divided each of them by 9 until I got a whole number with no decimals.

261 ÷ 9 = 29

6 0
3 years ago
Lin correctly compares the values of the digits in 644.66. Select the comparison Lin could have made.
katrin2010 [14]

Answer:

D. The value of the hundreds digit is 10,000 times the value of the hundredths digit.

Step-by-step explanation:

all of the other options are incorrect

0.01 x 10,000 = 100

4 0
3 years ago
Read 2 more answers
the total cost (c) in dollars of renting a car for n days is given by the inequality c &gt;125 +50n. what is the maximum number
Paraphin [41]
H. 6 days
hope this helps!
4 0
4 years ago
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