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Anna35 [415]
3 years ago
5

What is x when the equation is 5|2x+3|=45?

Mathematics
2 answers:
storchak [24]3 years ago
6 0
1.)divide by 5 on each side to obtain
Abs(2x+3)=45
2x+3=45 or 2x+3=-45
2x=42 or 2x=-48
x=21 or x=-24
aliina [53]3 years ago
4 0

5|2x+3|=45

|2x+3|=45/5

|2x+3|=9

Now set up two cases.

2x + 3 = -9 and 2x + 3 = 9

Solve each equation for x and then plug your answers back into the original equation given.

The x-value that produces a true statement for the given absolute value equation will be your answer.

Take it from here.

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Find the measure of each angle that is labeled on the diagram shown below.
Elza [17]
Lets take it in order:

1) 90 deg because the angle right next to it is a right angle
2) 128 deg becasue of the angle directly across from it
3) x = 180 - 128 = 52 deg
4) 180 = 90 + 52 + x so x = 180 - 90 - 52 = 38
5) 180 = 38 + x so x = 180 - 38 = 142
6) Same as 4
7) Same as 5

Check my math, as I just did it in my head 
4 0
3 years ago
Read 2 more answers
If you buy tomato sauce for $.90 a quart how much does it cost for 5 pints
Dima020 [189]
<h2>Hello!</h2>

The answer is: the price of 5 pints of tomato sauce is $2.25.

<h2>Why?</h2>

To calculate how much does it cost 5 pints, we need to perform a unit conversion with the following  unit relationship:

0.5Quart=Pints

Now, calculating how much is a pint:

\frac{0.9}{quarter}*\frac{0.5Quart}{1Pint}=0.45

A pint is $0.45.

Then, calculating how much are 5 pints:

Price=0.45*NoOfPints=0.45*5=2.25

Hence, the price of 5 pints of tomato sauce is $2.25.

Have a nice day!

8 0
3 years ago
What is the sum of 6x3+8x2-2x+4 and 10x3+x2+11x+9
AleksAgata [21]

Answer:

16x³ + 9x² + 9x + 13

Step-by-step explanation:

Given

6x³ + 8x² - 2x + 4 and 10x³ + x² + 11x + 9

Sum the 2 expressions by adding like terms, that is

= (6x³ + 10x³) + (8x² + x²) + (- 2x + 11x) + (4 + 9)

= 16x³ + 9x² + 9x + 13

4 0
3 years ago
Find the slope using the following two points:<br> (2,-7) and (-1,6)
Advocard [28]

Answer:

13/-3

Step-by-step explanation:

Y2-Y1/X2-X1

7 0
3 years ago
Which number shows 6,312 rounded to the nearest ten?<br><br> 6,300<br> 6,310<br> 6,320<br> 6,330
Fiesta28 [93]

1 is in the tens place

we look at 2

2 <5 so we leave it alone

6,310

Choice B

7 0
3 years ago
Read 2 more answers
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