1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Len [333]
3 years ago
9

Can someone pls answer this question what is 12 +z=15

Mathematics
2 answers:
ANTONII [103]3 years ago
3 0

12 + z = 15


12 - 12 + z = 15 - 12


0 + z = 3


z = 3


postnew [5]3 years ago
3 0

Answer:

z = 3

Step-by-step explanation:

12 + z = 15

You want to know the value of z. You need z alone on the left side. 12 is being added to z. In order to have z alone, you must get rid of the 12 that is being added to z. The opposite operation to addition is subtraction, so you must subtract 12 from the left side to have z alone since 12 - 12 = 0. The rule with equations is that you must do the same operation to both sides of the equation. That means you must subtract 12 from both sides of the equation.

12 + z - 12 = 15 - 12

12 - 12 + z = 3

Since 12 - 12 = 0, you are left with just z on the left side.

0 + z = 3

z = 3

You might be interested in
What is the common factor of 10 15and 35​
anygoal [31]

Answer:

the common factor of all the numbers is 5

7 0
3 years ago
The net of a square pyramid is shown below: Net of a square pyramid showing 4 triangles and the square base. The square base has
Neko [114]

Given:

The dimensions:

Square pyramid

Square base: 2x2

1 out of 4 triangles: 1/2x2x5

4 triangles: 2x2x5

To find:

The SURFACE AREA of the square pyramid

Find answer:

Step 1

Find the area of the square base -

Square base:

SA = L x W

= 2 x 2

= 4

<em>The surface area of the square is 4 square inches</em>

<em></em>

Step 2

Find the area of the 4 Triangles:

We will use a different formula here, to find 1 triangle, we will have to do:

SA = \frac{1}{2} *B*H

To find 2 triangles, we will do:

SA = B*H

But to find 4 triangles in just 1 step, we will do:

SA=2*B*H

Let's do it!

SA = 2*2*5\\=2*10\\=20

<em>The surface area of the 4 triangles are 20 square inches</em>

<em></em>

Step 3

Add answers to get FINAL ANSWER

Easy!

20+4=24

<h2>Hence, the Surface Area of the Square Pyramid is 24 square inches</h2>

<em></em>

<em></em>

4 0
2 years ago
!!!!!!!I NEED HELP WITH THESE PROBLEMS. THANK YOU!!!!!
Viefleur [7K]
The answer to your question is A

6 0
3 years ago
What is the surface area of this cylinder ( rounded to nearest tenth)​
JulsSmile [24]

Answer:

Step-62.8m^2

Step-by-step explanation:

Surface area of a cylinder =  

r = 2m, h = 3m

= 62.83185

6 0
3 years ago
Division of decimals
Ludmilka [50]

Answer:

At Least 20

85÷3.5

=24.28

So at least 20.

If I'm wrong, I'm sorry.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to this problem... f(x)3x+7=
    12·1 answer
  • What is 11/15 + 1/8 estimated?
    15·2 answers
  • How do you round 32.6 to the nearest 10th
    12·1 answer
  • To maintain an acceptable level of chlorine in your pool you add 1.4gallins of chlorine.This is 0.007℅ of the amount of water in
    10·1 answer
  • Which of the following expressions represents the sum of a number and three is divided by two? 2 ÷ x + 3 2 ÷ (x + 3) (x + 3) ÷ 2
    11·2 answers
  • What is the correct expansion of the binomial (x + y)^5
    15·1 answer
  • Find the value of the trigonometric ratio. Simplify the ratio if possible.
    12·1 answer
  • If, f(x) = x^2 + 3x -2, then f(a + 1) =<br><br> I hate homework
    6·1 answer
  • Helppppppo poooooooo<br>​
    8·1 answer
  • How does a digit in the ten thousands place compare<br> to a digit in the thousands place?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!