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Andreyy89
3 years ago
13

Solve for b. -11b+7 = 40−11b+7=40

Mathematics
1 answer:
Oksana_A [137]3 years ago
6 0

Answer:

This equation is false

Step-by-step explanation:

Well,

-11b + 7 = 4 - 11b + 7 = 40

combine like terms

-11b + 7 = -11b + 3 = 40

Communicative property

-3 to both sides

-11b + 4 = -11b = 40

-4 to both sides

-11b = -11b = 36

+11b to both sides

0 = 36

0 is not equal to 36 meaning that this equation is false.

<em>Thus,</em>

<em>the equation given is false.</em>

<em />

<em>Hope this helps :)</em>

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No one is answering i posted this question 2 times, this is my 3rd time please answer.
Dahasolnce [82]

Answer:

13

Step-by-step explanation:

First, fill in 3 boxes of the table using the given information (blue numbers on the attached table)

"Of the 32 students that have a cell phone, 19 students do not have a tablet."

The top row of the table is students who have a cell phone.  Therefore, place 19 in the box in this row that is in the "no tablet" column.

"Of the 70 students that have a tablet, 57 students do not have a cell phone."

The first column of the table is students who have a tablet.  Therefore, place 57 in the box in the 2nd row of this column.

"11 students do not have a cell phone or a tablet."

Find the "no cell phone" row and the "no tablet" column and place 11 in the box that coincides.

We can calculate the blank totals using addition (shown by green numbers on the attached table)

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To calculate the number of students who have a cell phone AND a tablet:

⇒ Total students with a cell phone <em>minus</em> students with a cell phone but no tablet

⇒ 32 - 19 = 13

4 0
2 years ago
A parabola intersects the x-axis at x = 3 and x = 9.
Novay_Z [31]

Answer:

6

Step-by-step explanation:

This function corresponds to 'even' function, then

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3 0
3 years ago
Read 2 more answers
784,072 rounded to the nearest hundred thousand
Fittoniya [83]

When you round; you round down if the number in the selected column is below 5 and you round up if the number is 5 and above.  

Thus; if you apply this to your question:


784,072 then round up and you get 790,000

3 0
3 years ago
16. simplify the rational expression. state any excluded values. x^2-x-6/x+2
belka [17]
X^2-X-6=(X-3)(X+2)
(X+2)/(x+2)=1
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X=3
5 0
3 years ago
-144r = -12rk find the value
OLga [1]

k = 12

cancel out the r on both sides

then divide -144 by -12.

you get 12.

5 0
3 years ago
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