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Advocard [28]
3 years ago
9

Create an equivalent system of equations using the sum of the system and the first equation.

Mathematics
1 answer:
True [87]3 years ago
6 0

Answer:

D

Step-by-step explanation:

x+4y=8

4x+y=2

add

5x+5y=10

so system is

x+4y=8

5x+5y=10

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The population at Bishop High School is 2000 students in 2011. Every year the population decreases by 50 students
Artemon [7]

Answer:

  • Let p be the population at t be the number of years since 2011.  Then, p=2000-50t
  • The projected population of the high school in 2015=1800
  • In <u>2019</u> the population be 1600 students

Step-by-step explanation:

Given: The population at Bishop High School students in 2011 =2000

Also,  Every year the population decreases by 50 students which implies the rate of decrease in population is constant.

So, the function is a linear function.

Let p be the population at t be the number of years since 2011.

Then, p=2000-50t

So at t=0, p=2000

In year 2015, t=4, substitute t=4 in the above equation ,we get

p=2000-50(4)\\\Rightarrow\ p=2000-200\\\Rightarrow\ p=1800

Hence, the projected population of the high school in 2015=1800

Now, put p=1600 in the function , we get

1600=2000-50t\\\Rightarrow50t=2000-1600\\\Rightarrow50t=400\\\Rightarrow\ t=\frac{400}{50}\\\Rightarrow\ t=8

Now, 2011+8=2019

Hence, in <u>2019</u> the population be 1600 students




6 0
3 years ago
A 12.5 oz bag of Doritos for $3.79 or 3oz bag for $1.00? How do you work this out?
DiKsa [7]
A group of a 1,000 randomly chosen individuals took a test that measures verbal reasonings and also a test that measures problem-solving abilities a correlation coefficient .06 was found between the two scores on the test for this group. What is the correlation coefficient?
8 0
3 years ago
Mr. Velazco made snacks in separate gift bags. He gave one each to the 636 sixth grade students going on the field trip. Then he
prohojiy [21]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
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I will give brainliest please hurry
Eduardwww [97]

Answer:

B)

Step-by-step explanation:

300, since the line inside the box is on 300

Hope that helps!

6 0
3 years ago
Read 2 more answers
What is the vertex of f(x)=x^2+12x=31
Ket [755]

Answer:

x

=

±

√

5

−

6

Decimal Form:

x

=

−

3.76393202

…

,

−

8.23606797

…

Step-by-step explanation:

3 0
2 years ago
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