All categories

2 years ago

Identify the value of a if y= ax+ 7x + 2 and the point (2, 12) is on the graph.

Mathematics

1 answer:

alexandr1967 [171]2 years ago

6 0

Answer:

a=-2

So yep. ;)

Step-by-step explanation:

Alright, so, (2,12), 2 is the x and 12 is the y.

Stick them into the equation: $12=a*2+(7*2)+2$

Then, solve:

$12=a*2+14+2$

a = -2

So yes, they're on the graph.

Hope this helped! :)

You might be interested in

PLS ANSWER THIS ITS DUE SOON

Mrrafil [7]

Answer:

i think that its b

Step-by-step explanation:

7 0

2 years ago

Please write the answer

Travka [436]

$\sf \dfrac{3^x - 5 \times 3^{(x-2)}}{3^{(x-3)}} \\ \\ \longrightarrow \sf \dfrac{ {3}^{x} }{ {3}^{(x - 3)}} - \frac{5}{ {3}^{(x - 3)} } \times {3}^{(x - 2)} \\ \\ \longrightarrow \sf {3}^{[x - (x - 3)]} - \dfrac{5}{ {3}^{(x - 3)} } \times {3}^{(x - 2)} \\ \\ \longrightarrow \sf {3}^{3} - \dfrac{5}{ {3}^{(x - 3)} } \times \dfrac{ {3}^{x}}{9} \\ \\ \longrightarrow \sf {3}^{3} - \dfrac{5}{ \bigg(\dfrac{ {3}^{x} }{ {3}^{3} }\bigg) } \times \dfrac{ {3}^{x}}{9}\\ \\ \longrightarrow \sf {3}^{3} - \dfrac{ ({3}^{3})( 5)}{ {3}^{x} } \times \dfrac{ {3}^{x}}{9}\\ \\ \sf \longrightarrow {3}^{3} - (5 \times 3) \\ \\ \longrightarrow \sf \: 27 - 15 \\ \\ \longrightarrow \leadsto{\underline{\boxed{\sf{ \pink{ 12}}}}}$

6 0

2 years ago

Y=3x-2

Inessa [10]

Answer:

a) $(x,y) = (3, 7)$ is a solution of the linear equation.

b) The rate of change of the equation is 3.

c) The y-intercept of the equation is -2.

d) <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

Step-by-step explanation:

a) If $(x,y) = (3, 7)$ is a solution of the linear equation, then $f(3) = 7$ . If $x = 3$ , then the function evaluated at this value is:

$y = 3\cdot (3) -2$

$y = 7$

Hence, $(x,y) = (3, 7)$ is a solution of the linear equation.

b) The rate of change of the equation is represented by the slope of the function, which is the constant that multiplies the indepedent variable ( $x$ ). Hence, the rate of change of the equation is 3.

c) The y-intercept of the equation is the only constant of the equation. Hence, the y-intercept of the equation is -2.

d) A real-world scenario would be the following: <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

7 0

2 years ago

One-third of the students at the local community college live in the county. If there are 2037 students enrolled, how many do no

densk [106]

Answer:

ow many students are enrolled in community colleges? ... How does the population of community college students break down by race/ethnicity and income? ... What percentage of community college students obtain a college credential? ... How many community college students complete their remedial requirements?

Step-by-step explanation:

Provisional National Center for Education Statistics (NCES) data on unduplicated year-round enrollment (as opposed to fall enrollment only) indicate that 8.2 million undergraduates were enrolled in public two-year colleges in 2018–19.

In fall 2018, 5.6 million students were enrolled in public, two-year colleges. About 2 million were full-time students, and 3.6 million were part-time.

The National Student Clearinghouse Research Center estimates that 5.4 million students were enrolled in public two-year colleges in fall 2019, down 1.4% from fall 2018.

However, these studies underestimate the number of community college students, as about 100 community colleges offer a small number of bachelor’s degree programs and thus are listed in NCES as four-year institutions. According to a CCRC analysis correcting for this misclassification, 6.7 million students were enrolled at community colleges in fall 2017, and nearly 10 million students enrolled at a community college at some point during the 2017-18 academic year.

7 0

2 years ago

PLEASEEE HELP ILL GIVE BRAINLIEST

morpeh [17]

I'm pretty sure the answer would be false. It's should be -7 because it's counting down 1 2 3.

5 0

2 years ago

Read 2 more answers