All categories

4 years ago

Solve by inspection: X+4=15

Mathematics

2 answers:

amid [387]4 years ago

7 0

x + 4 = 15

- 4 -4

x = 11

You would subtract 4 because you need to isolate the x to get the value of x. You would subtract it to both sides because whatever you do on one side, you have to do it to the other side.

Snowcat [4.5K]4 years ago

7 0

Explanation:

x+4=15

subtract by 4 both sides of an equation.

x+4-4=15-4

then simplify.

15-4=11

x=11 is the final answer.

Hope this helps!

Thanks!

Have a great day!

You might be interested in

Which function is graphed below?

photoshop1234 [79]

The answer for the question above is the B/Second one or

Y=3(1/3)^x

3 0

3 years ago

I need help answering the question in the picture provided

adoni [48]

answer:

(a).

Equation of circle is x² + y² - 25 = 0

(b).

(-5, 0) » yes

(√7, 1) » no

(-3, √21) » no

(0, 7) » no

Step-by-step explanation:

(a).

If centred at origin, centre is (0, 0)

General equation of circle:

${ \boxed{ \bf{ {x}^{2} + {y}^{2} + 2gx + 2fy + c = 0}}}$

but g and f are 0:

${x}^{2} + {y}^{2} + c = 0 \\ but : \\ c = {g}^{2} + {f}^{2} - {r}^{2} \\ c = { - 25}$

8 0

3 years ago

What is the slope of a line with points at (-5,2) (4,-7)?

stira [4]

Answer:

-1

Step-by-step explanation:

To find the slope of a line, you would need to use the slope formula, and that is $slope=\frac{y2-y1 }{x2-x1}$

This equation should be used every time you need to find a slope with two given points. If you remember this, you would find questions like this more easy.

First, you would need to plug in your coordinate points into the formula.

You would plug -7 in y2, 2 in y1. And then you will plug in 4 in x2, and -5 in x1.

Your equation should look like this:

$\frac{-7-2}{4-(-5)}$

Then you solve.

For the top portion of your equation you would get -9. The -5 turns into a positive 5 because when you carry the negative over (distribute it), the negative cancels out and turns into a positive. When you add the 5 and the 4 together, it will get you 9. The bottom portion of the equation will be 9.

Your equation should now look like this:

$\frac{-9}{9}$

Now, you divide.

When you divide, the two 9's end up as a whole, and you keep the negative since the negative doesn't cancel out in this situation. When you finish dividing, you would get -1.

Your FINAL answer would be -1.

6 0

3 years ago

Read 2 more answers

Write a number in which the digit 8 is ten times the value then the digit in 4.381.

Lemur [1.5K]

4.381

the 8 in here is in the hundreths
so we need to move it to the tenth to make it 10 times more

4.831

7 0

4 years ago

Read 2 more answers

I need help with two three and one

Mariana [72]