3 years ago

X + 3 = 7........pls solve

Mathematics

2 answers:

Oxana [17]3 years ago

8 0

The anwser would be 4 because u would subtract 7-3= 4

dangina [55]3 years ago

4 0

Seeing as we are solving for x all you would need to do is take 7 and subtract 3 to find x so the answer is 4

4 + 3 = 7

Hope this helps :)

You might be interested in

Using the quadratic formula to solve x2 = 5 – x, what are the values of x?

Reil [10]

Answer:

$\dfrac{-1+\sqrt{21}}{2}$ and $\dfrac{-1-\sqrt{21}}{2}$ .

Step-by-step explanation:

The given quadratic equation is

$x^2=5-x$

It is can written as

$x^2+x-5=0$

If a quadratic equation is $ax^2+bx+c=0$ , then the quadratic formula is

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

In the given quadratic equation $a=1,b=1,c=-5$ . So,

$x=\dfrac{-1\pm \sqrt{1^2-4(1)(-5)}}{2(1)}$

$x=\dfrac{-1\pm \sqrt{1+20}}{2}$

$x=\dfrac{-1\pm \sqrt{21}}{2}$

$x=\dfrac{-1+\sqrt{21}}{2},\dfrac{-1-\sqrt{21}}{2}$

Therefore, the values of x are $\dfrac{-1+\sqrt{21}}{2}$ and $\dfrac{-1-\sqrt{21}}{2}$ .

6 0

2 years ago

What is the length of the side of a regular octagon if a diagonal is 20 meters long?

Margarita [4]

Answer:

Step-by-step explanation:

3 0

3 years ago

there are 7 times as many red markers as there are blue markets. if the total number of markers is 32, how many red markers are

White raven [17]

If we put it into an equation, and x was blue markers, we could say:
7x + x = 32
Then you'd simplify:
8x = 32
Then solve:
8x = 32
÷ 8
x = 4.
So now we know that there are 4 blue markers, we can multiply 4 by 7 to get the amount of red markers, which is 28. Hope this helps!

3 0

2 years ago

What's the cube root of 81?

Alexxandr [17]

The cube root of 81 is 4.32674871092

6 0

3 years ago

Read 2 more answers

Find the value of x for which the lines are parallel.<br> A)63<br> B)71<br> C)72<br> D)64

k0ka [10]

Answer:

Step-by-step explanation: