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3 years ago

Jimmy’s age is one year less than the sum of the ages of his siblings Serena and Tyler. Which equation represents Jimmy’s age?

Mathematics

1 answer:

andriy [413]3 years ago

3 0

I think it is d because the questions says: j-1+s+t

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PLEASE SOLVE AND SHOW WORK Find the equation of the line that passes through the points (-1,-5) and (-7,-6) in slope intercept f

Lynna [10]

The way that you find this problem is to first find the slope, and then input one of your points into your equation to find b.
The slope-intercept form of a line is: $y=mx+b$ , where m is the slope and b is the y-intercept.

To find the slope, you must use the following equation:
$\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

In this equation, this would be equivalent to: $\frac{-6-(-5)}{-7-(-1)}$ which, when simplified, is $\frac{1}{6}$ . This is your slope.

To find the Y-intercept, you just plug all variables that you currently have solved for into the equation. You may use either point for the x and y variables, but you must use $\frac{1}{6}$ for the m term.

$-6 = (\frac{1}{6})(-7) + b$ leads to $-6 = \frac{-7}{6} +b$ which leads to $\frac{-29}{6} = b$ . You have now solved for the y-intercept and aare ready to form your final equation.

The final equation is: $y=\frac{1}{6}x -\frac{29}{6}$

4 0

3 years ago

WILL MARK BRAINLIEST!!!!!! AND 20 POINTS!!!!!!

defon

you didn't include the graph

but i'm a guess c.

6 0

3 years ago

Which statements are true about the ordered pair (10, 5) and the system of equations?

Alexeev081 [22]

Answer:

Step-by-step explanation:

We have the system of equations:

$\left\{\begin{array}{ll}2x-5y=-5 \\ x+2y=11\end{array}$

And an ordered pair (10, 5).

In order for an ordered pair to satisfy any system of equations, the ordered pair must satisfy both equations.

So, we can eliminate choices A and B. Satisfying only one of the equations does not satisfy the system of equations.

Let’s test the ordered pair. Substituting the values into the first equation, we acquire:

$2(10)-5(5)\stackrel{?}{=}-5$

Evaluate:

$20-25\stackrel{?}{=}-5$

Evaluate:

$-5\stackrel{\checkmark}{=} -5$

So, our ordered pair satisfies the first equation.

Now, we must test it for the second equation. Substituting gives:

$(10)+2(5)\stackrel{?}{=} 11$

Evaluate:

$20\neq 11$

So, the ordered pair does not satisfy the second equation.

Since it does not satisfy both of the equations, the ordered pair is not a solution to the system because it makes at least one of the equations false.

Therefore, our answer is C.

3 0

3 years ago

Help please !!!!! Super hard

Keith_Richards [23]

The image is really unclear but I will assume that the number of teams given = 66
and the formula is
$n = \frac{ {t }^{2} - t }{2}$
plug in the number of teams
$66 = \frac{ {t}^{2} - t }{2}$
multiply both sides by two
$132 = {t}^{2} - t$
subtract 132 from both sides and factor
t = 12

4 0

3 years ago

I need help with this

Alex73 [517]

Answer: the third one

Step-by-step explanation:

3 0

3 years ago