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2 years ago

How would i solve 15=x+7

Mathematics

2 answers:

lakkis [162]2 years ago

8 0

Answer:

15-7=8

Step-by-step explanation:

you will have to use inverse operation

kipiarov [429]2 years ago

8 0

Answer:

15=x+7

Step-by-step explanation:

This is a basic algebra problem. In order to solve this you have realize what kind of equation this is. This equation is asking for both sides to be equal. In order to do that you have to subtract 7 from 15 to find what x equals.

15=x+7

-7 -7

15-7=x+7-7

8=x

This means that in this equation, x equals 8. Plug it back in to check.

15=8+7

15=15. This works perfectly!!!

Let me known if you need more information and i'll try my best to answer!

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2 years ago

Write an equation of a line with the given slope and y intercept from the graph

goblinko [34]

Answer:

y = 1.5x - 1 or y = 1 1/2x - 1 or y = 3/2x - 1

Step-by-step explanation:

y = mx + b

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<em><u>Plz mark as brainliest if correct!!!</u></em>

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3 years ago

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What is the area of a circle that has a circumference of 314km

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Step-by-step explanation:

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2 years ago

What is the solution set of the inequality: 14- 3x < -1

Kazeer [188]

Answer:

<h2>x>5 (Answer should have a positive sign.)</h2>

Step-by-step explanation:

To solve this problem, isolate x from one side of the equation.

First, subtract by 14 from both sides.

14-3x-14<-1-14

Solve.

-3x<-15

Multiply by -1 from both sides.

(-3x)(-1)>(-15)(-1)

Solve.

3x>15

Then, you divide by 3 from both sides.

3x/3>15/3

Solve.

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In conclusion, final answer is x>5.

3 0

3 years ago

Pemfaktoran dari 2x²+5x-18<br><br>

Harrizon [31]

We can factor a polynomial by finding its roots. In particular, a quadratic equation has (at most) two roots $x_1,\ x_2$ , which would allow us to write the polynomial as

$p(x)=a(x-x_1)(x-x_2)$

To find the solutions, we can use the quadratic formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a} = \dfrac{-5\pm\sqrt{169}}{4} = \dfrac{-5\pm13}{4}$

So, the two solutions are

$\dfrac{-5+13}{4} = 2\quad\text{and}\quad\dfrac{-5-13}{4} =-\dfrac{9}{2}$

And so we can factor the polynomial as follows:

$2x^2+5x-18=2(x-2)\left(x+\dfrac{9}{2}\right)$

3 0

3 years ago