-7(-1+7k)-3(8k-1)
What the answer?

Answer:

The percent change in enrollment at Main Middle School was about 20%

Step-by-step explanation:

Percentages

There was a change of enrollments in the 7th grade at Main Middle School from 612 to 489 due to openings of a new school.

The change in the number of enrollments was 612 - 489 = 123.

To express it as a percentage, we divide by the original number and then multiply by 100:

[tex]\displaystyle \mathrm{Change} \% = \frac{123 }{ 612} * 100 \approx 0.2[/tex]

The percent change in enrollment at Main Middle School was about 20%

"Interpret the rate of change and the y-intercept.

"

Rate of change is 5. Each ticket costs 5$.

Y-intercept is (0,-17). They spent $17 on supplies before they sold tickets.

(Sorry, you probably already know the answer)

Answer:

$3.67 rounds up to $4

$2.40 rounds down to $2

Step-by-step explanation:

Answer:

7x + 3 = 5x + 7

2x + 3 = 7

2x = 4

x = 2

Answer:

D

Step-by-step explanation:

Answer:

n≥9

Step-by-step explanation:

n-7>=2

change the equation

n≥2+7

add 7 to 7 and two the seven gets canceled out and you are left with n≥9

Answer:

x=-5

Step-by-step explanation:

Combine like terms: 7x-11=-46

Add 11 to -46: -35

Divide: 7x/-35

ANSWER: x=-5

Answer:

No solution

Step-by-step explanation:

Brain-list?

Answer:

B no solution

Step-by-step explanation:

Answer:

so meh answer is

Step-by-step explanation:

Answer:

Need pic

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

Answer:

0,0

1,3

2,4

3,3

Answer:

the third answer

Step-by-step explanation:

hope this helped :-)

Answer:

Mercury and helium

1034.8575

Step-by-step explanation:

Given that :

Melting point of substances :

Nickel: 2,651

Mercury: -37.89

Helium: -458

Copper: 1,984.32

Melting means change of solid to liquid

a) Which two elements have melting points that are closest in value?

The difference in Melting point between mercury and helium :

- 37.89 - (-458) = 420.11

Nickel and copper :

2651 - 1,984.32 = 666.68

Hence, element with melting point which are closest in value Are Mercury and helium

b) What is the average melting point of the substances?

Sum of the melting points / number of substances

(2,651 + (-37.89) + (-458) + 1,984.32) / 4

= 4139.43 / 4

= 1034.8575

Answer:

56576765465-5655676756+

75y5yg57+u5u57576574874+

65764784667+857647984765+

589578575975

Answer:

huh??

Step-by-step explanation:

Answer:

can't be solved

Step-by-step explanation:

-12 = 6 (-3) + 8

-12 = -18 + 8

-12 ≠ -10

Answer: Tyler used the distributive property.

Step-by-step explanation:

For the expression:  

Madison wrote:  which is by commutative property of addition.

The commutative property of addition says that , for a,b be any real number

Tyler wrote: which is by distributive propery.

The distributive property says that , for a,b,c be any real numbers.

Hence, the last option is correct.

Answer:

D

Step-by-step explanation:

Took the test ;)

Answer:

No, Eric is not correct. Other figures could have those views. We also do not have the front view, which could add more information. More views are required to be sure of the shape of the object.

Step-by-step explanation:

Answer:

eric is correct

Step-by-step explanation:

Answer:

4 and 6

Step-by-step explanation:

Answer:

x = 10 :)

Step-by-step explanation:

4/3 = x+10/15

x = 10

Answer:

1/4

Step-by-step explanation:

Answer:

4(b) , 5(a)

Step-by-step explanation:

(4). (b)  Domain is {0, 1, 2, 3} and Range is { - 3, - 2, - 1, 0}

(5).  (a)  Domain is [ - 4, 2] and Range is [ - 4, 4]

or

domain: - 4 ≤ x ≤ 2 , range: - 4 ≤ y ≤ 4

Answer:80 % chance

Step-by-step explanation:

The required probability that the person selected rock climbing given that the person is female is 23%.

Probability can be defined as the ratio of favorable outcomes to the total number of events.

As mentioned in the question,
Total person in the adventure sports = 100
female rock climbers = 23
The probability that the person selected rock climbing given that the person is female is given as,
= female rock climbers / Total person in the adventure sports
= 23/ 100
= 0.23

Thus, the probability that the person selected rock climbing given that the person is female is 23%.

Learn more about probability here:

brainly.com/question/14290572

#SPJ5

Answer:

-6 - square root 31, -6 + square root 31

Answer:

x = [tex]\frac{48 - \sqrt{1984} }{-8}[/tex]

x = [tex]\frac{48 + \sqrt{1984} }{-8}[/tex]

Step-by-step explanation:

-4[tex]x^{2}[/tex] - 48x - 20 = 0

Remember, the quadratic formula is:

x = [tex]\frac{-b +- \sqrt{b^{2} -4ac } }{2a}[/tex]

A quardatic equation in standard form is;

a[tex]x^{2}[/tex] + bx + c

Substitute in the values and solve;

[tex]\frac{48 +- \sqrt{(-48)^2 - 4 * (-4) * (-20)} }{2*(-4)}[/tex]

Simplify;

[tex]\frac{48 +-\sqrt{2304 -320} }{-8}[/tex]

x = [tex]\frac{48 +- \sqrt{1984} }{-8}[/tex]

x = [tex]\frac{48 - \sqrt{1984} }{-8}[/tex]

x = [tex]\frac{48 + \sqrt{1984} }{-8}[/tex]

Answer:

f(x)= 3x-15/4

Step-by-step explanation:

The answer is D; I got it right on the test.

Answer:

The airplane’s rate of change in elevation is 34.5 m/s.

Step-by-step explanation:

Given that,

An airplane descended 345 m in 10 seconds.

We need to find the airplane’s rate of change in elevation. Let the rate is R. Its rate is equal to the distance divided by time. So,

[tex]R=\text{velocity}=\dfrac{345\ m}{10\ s}\\\\=34.5\ m/s[/tex]

So, the airplane’s rate of change in elevation is 34.5 m/s.

Answer:

yes you just have to solve for both x and y in the top system and then solve the other systems to find out which one has the same solutions

Step-by-step explanation:

hope this helps!