All categories

2 years ago

Which expression is equivalent to 3a+9a+7b-b

Mathematics

1 answer:

LuckyWell [14K]2 years ago

3 0

Answer:

12a+6b

Step-by-step explanation:

3a+9a+7b-b

Combine like terms

3a+9a +7b-b

12a +6b

You might be interested in

What is the factored from for -2r-6 PLEASE HELP! WILL MARK BRAINLIEST

Katarina [22]

Answer:

-2(r+3)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

B) Imagine that you earned $8.425 in one year. If the government enforce

Eddi Din [679]

Answer:

take the tax %, divide by 100, and multiply by 8,425.

Step-by-step explanation:

Take the tax %, divide by 100, and multiply by 8,425.

8 0

2 years ago

Los puntos de intersección de los gráficos de f(x)=x2+6x−7 y g(x)=4x−10

alisha [4.7K]

Answer:

Those graphs do not intersect.

Estes gráficos no se intersecciónan

Step-by-step explanation:

The intersection points are x for which:

$f(x) = g(x)$

In this question:

$f(x) = x^{2} + 6x - 7$

$g(x) = 4x - 10$

$x^{2} + 6x - 7 = 4x - 10$

$x^{2} + 2x + 3 = 0$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$x^{2} + 2x + 3 = 0$

So $a = 1, b = 2, c = 3$

$\bigtriangleup = b^{2} - 4ac = 2^{2} - 4*1*3 = -8$

Sincce $\bigtriangleup$ is negative, there are no solutions, which means that those graphs do not intersect.

7 0

2 years ago

State if the two triangles are congruent. If they are, state how you know.

nydimaria [60]

Answer: Your answer is 2) SAS

Step-by-step explanation: Yes, there are congruent.

6 0

2 years ago

At a basketball game, a vender sold a combined total of 223 sodas and hot dogs. The number of hot dogs sold was 57 less than the

AnnZ [28]

Answer: 140 Hot dogs and 83 sodas.

Step-by-step explanation:

Alright, so we will say that h = hot dogs and s = sodas.

h + s = 223

I have used the guess and test strategy to get:

h = 140

140 - 57 = 83

s = 83

Check: 83 + 140 = 223

4 0

2 years ago