15=3-(z+6) solve the equation and check your solution

2 answers:

7 0

15 = 3 - (z+6)
15 = 3 - z - 6
z = 3 - 6 - 15
z = -18

check:
15 = 3 - (z+6)
15 = 3 - (-18+6)
15 = 3 - (-12)
15 = 3 + 12
15 = 15 (true)

vichka [17]3 years ago

6 0

So, 15 = 3 - z - 6 / + z;

15 + z = 3 - 6 ;

15 + z = -3 / -15;

z = -18;

Check the solution: 3 - (-18 + 6 ) = 3 - (-12) = 3 + 12 = 15. Okay!

You might be interested in

Ralph is 3 times as old as Sara in 4 years Ralph will be twice as old as Sara will be then. Find Ralph’s age now.

Xelga [282]

Answer:

3x+4 Ralph is currently 12 years old.

Step-by-step explanation:

You can find the equation by reading the scenario given. When you read it, it says that Ralph is 3 times as old as Sara and since her current age is going to be used to represent x you will first get 3x. That automatically eliminates the second and third choice given. It then says the equation is for Ralph's age in four years which means to add four to the equation. This gives you 3x+4 as your equation.

When something is tripled and then in a few years it is doubled, it is easiest to first try the number that is being added. So in this case the number is four. When you multiply 4 by 3 you get 12. If Sara is 4 she'll turn eight in four years and if Ralph is 12 he'll turn 16 in four years. 16 divided by 2 is 8 which shows you that Ralph is currently 12

6 0

3 years ago

PLEASE SOMEONE HELP ME WITH NUMBER 2. Only PLEASE I NEED HELP!!!!!

Black_prince [1.1K]

Answer:

The intersection of line l is AC

and the intersection of line m is DF.

4 0

3 years ago

Read 2 more answers

A 2-column table with 3 rows titled Units of Length. Column 1 is labeled Customary System Units with entries 1 inch, 1 foot, 1 m

Komok [63]

Answer:

the answer is b

Step-by-step explanation:

5 0

3 years ago

A room has a rectangular floor that is 15 feet by 21 feet. What is the area of the floor in square yards ?

Soloha48 [4]

Answer:

Hey There!

Let's solve...

Here it is a rectangular floor with length =21 cm and width =15cm

$area = l \times w \\ = 21 \times 15 \\ = 315 {ft}^{2} \\ \\$

So now We need to convert it to yards square

$315ft^{2} \times \frac{ {1yd}^{2} }{ {9ft}^{2} } \\ \\ = \cancel{315ft^{2}} \: ^{35} \times \frac{ {1yd}^{2} }{ \cancel{9 {ft}^{2} }} \\ \\ = 35 {yd}^{2}$