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3 years ago

100 POINTS

Mathematics

1 answer:

marin [14]3 years ago

7 0

Answer:

Step-by-step explanation: So we know the car has 8 gallons of gas. 1/3 would be 4 gallons. 2/3 would be 8 gallons. 12 gallons would be 3/3. my brain isnt working rn but i used mt last braincell umm i suppose its correct

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Each class briarwood elementary collect at least 54 of food during the drive. If there are 29 classes in the school,what was the

julia-pushkina [17]

Answer:

1566

Step-by-step explanation:

20*50=1000

20*4=80

9*50=450

9*4=36

450+81=486

4 0

3 years ago

Read 2 more answers

HELP. WILL MARK BRAINLIEST. WHAT IS THE CORRECT ANSWER?

kari74 [83]

7/8 * cm/ month * 5 months =

35/8 cm

4 3/8 cm

Answer: 4 3/8 cm

6 0

3 years ago

Read 2 more answers

1. What are the solutions (coordinate points) to the system of equations?

Leto [7]

Question 1

The given system of equations is:

$y = {x}^{2} + 5x + 6 \\ y = 3x + 6$

Equate the two equations:

${x}^{2} + 5x + 6 = 3x + 6$

Rewrite in standard form:

${x}^{2} + 5x - 3x + 6 - 6 = 0$

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

$x(x + 2) = 0$

$x = 0 \: or \: x = - 2$

When we put x=0, in y=3x +6, we get:

$y = 3(0) + 6 = 6$

One solution is (0,6)

When we put x=-2, into y=3x+6, we get:

$y = 3( - 2) + 6 = 0$

Another solution is (-2,0)

The solutions are; (0,6) and (-2,0)

Question 2:

The function is

$f(x) = {x}^{6} - {x}^{4}$

Let us put x=-x,

$f( - x) = {( - x)}^{6} - {( - x)}^{4}$

This gives:

$f( - x) = {x}^{6} - {x}^{4}$

We can observe that:

$f(x) = f( - x)$

This is the property of an even function.

Question 3:

The given function is

$f(x) = {x}^{2} + 3x - 2$

The average rate of change of f(x) from x=a to x=b is given as:

$\frac{f(b) - f(a)}{b - a}$

This is the slope of the secant line connecting the two points on f(x)

From x=2 to x=6, the average rate of change

$= \frac{f(6) - f(2)}{6 - 2} \\ = \frac{ {6}^{2} + 3 \times 6 - 2 - {2}^{2} - 3 \times 2 + 2 }{4} \\ = \frac{36 + 18 - 4 - 6}{4} \\ = \frac{44}{4} \\ = 11$

The average rate of change is 11

3 0

3 years ago

melinda will take 15 quizzes this semester. she would like to score a b are better on at least 90% of them. so far. she gotten a

dimaraw [331]

Answer:

i hope this helps, i got x + 5 ≤ 13 as ur equation

Step-by-step explanation:

7 0

2 years ago

A quadratic equation has a

11111nata11111 [884]

Answer:

$\boxed {\boxed {\sf 2 \ real \ solutions }}$

Step-by-step explanation:

The quadratic formula is:

${x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}$

The discriminant of a quadratic is just the expression under the square root, or $b^2-4ac$ . This can tell us the number of solutions a quadratic has.

If the discriminant is:

Positive = 2 real solutions
Equal to Zero = 1 real double/repeated solution
Negative = 0 real solutions, but 2 imaginary solutions

Our quadratic equation has a discriminant of 5, which is positive. Therefore, it has 2 real solutions.

6 0

2 years ago