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NemiM [27]
2 years ago
7

10 POINTS NEED ASAP!!! I WILL MARK BRAINS 2.5.AP-5 At the beginning of​ summer, a maintenance crew refills a swim

ming pool at a city park. The relationship between the time in hours to fill the pool and the amount of water in the pool is proportional. After 4​ hours, the pool holds​ 5,200 gallons of water. Answer parts a and b. a. How could you graph this​ relationship? A. Plot the points​ (4,0) and​ (0,5200). Draw a line through these points. B. Plot the points​ (0,4) and​ (0,5200). Draw a line through these points. C. Plot the points​ (0,0) and​ (4,5200). Draw a line through these points. D. Plot the points​ (0,4) and​ (5200,0). Draw a line through these points

Mathematics
1 answer:
alina1380 [7]2 years ago
3 0
The answer is C, (0,0) and (4,5200).
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0.3(4-x)=x-1.4 how do you solve this problem?
tresset_1 [31]

Answer:

x = 2.

Step-by-step explanation:

Solve for x:

0.3 (4 - x) = x - 1.4

Expand out terms of the left hand side:

1.2 - 0.3 x = x - 1.4

Subtract x from both sides:

1.2 + (-0.3 x - x) = (x - x) - 1.4

-0.3 x - x = -1.3 x:

-1.3 x + 1.2 = (x - x) - 1.4

x - x = 0:

1.2 - 1.3 x = -1.4

Subtract 1.2` from both sides:

(1.2 - 1.2) - 1.3 x = -1.2 - 1.4

1.2 - 1.2 = 0:

-1.3 x = -1.2 - 1.4

-1.2 - 1.4 = -2.6:

-1.3 x = -2.6

Divide both sides of -1.3 x = -2.6 by -1.3:

(-1.3 x)/(-1.3) = (-2.6)/(-1.3)

(-1.3)/(-1.3) = 1:

x = (-2.6)/(-1.3)

(-2.6)/(-1.3) = 2.:

Answer:  x = 2.

4 0
2 years ago
143 x 2<br> Pls help me please
iren2701 [21]
143 x 2 = 286 because if you mulitpy each by 2 you get 286
7 0
2 years ago
Read 2 more answers
WILL MAKE BRAINLIEST IF RIGHT
slavikrds [6]

Answer:  c) Rx + Py = -PR

<u>Step-by-step explanation:</u>

x-intercept (-P, 0)   <----- (x_2,y_2)

y-intercept (0, -R)  <----- (x_1,y_1)

Slope(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{0-(-R)}{-P-0}=\dfrac{R}{-P}

Point-Slope\ formula: y-y_1=m(x-x_1)

                                       y-(-R)=-\dfrac{R}{P}(x-0)

                                            y+R=\dfrac{-Rx}{P}

                                           Py+PR=-Rx

                                                    Rx+Py=-PR

5 0
2 years ago
I need help with this Algebra 1 Study Guide. It has 5 questions . This has many hard questions so to you people that like a chal
scoundrel [369]
1. Rational numbers can be written as a ratio (fraction)
Whole numbers are rational. 5 = 5/1, for example.
Square roots are NOT rational.  Example: √3
However, square roots of square numbers can be simplified, and are therefore rational. <span>√4 = 2, rational.</span>

√4 + <span>√16 = 2 + 4 = 6. rational
</span>√5 + √36...<span> irrational
</span>√9 + <span>√24... irrational
</span>2 × <span>√4 = 2 × 2 = 4. rational
</span>√49 × <span>√81 = 7 × 9 = 63. rational
</span>3√12... irrational

2. n^\frac12=\sqrtn
9^\frac32=9^3\times\frac12=\sqrt{9^3}=\sqrt{729}=29

3. \frac{n^a}{n^b}=n^{a-b}

\frac{a^\frac13}{a^\frac14}=a^{\frac13-\frac14}=a^{\frac{1}{12}}

4. n^\frac1x=\sqrt[x]n

\sqrt[3]{m^2n^5}=m^{\frac23}n^{\frac53}

5. \sqrt{a}\times\sqrt{b}=\sqrt{ab}

\sqrt{3}\times\sqrt{12}=\sqrt{3\times12}=\sqrt{36}=6

A, since neither 3 nor 12 is a square but we end up with 6.
5 0
2 years ago
A ship left port A with a speed of 40 mph. In 1 1/4 of an hour, a second ship left the port with a speed of 60 mph. In how many
Andrews [41]

The matter explained that the first ship had a speed of 40 mph when leaving the port and within 1 1/4 hours the second ship followed with a speed of 60 mph. And the question is when will the first and the second ship meet and in how long?

To calculate the distance from the port and when the second ship follows when the first, the first step that we have to calculate is, calculate the distance of the first ship that has departed first in 1 1/4 hours we can calculate using 1.25 x 40 = 50 miles.

The distance of the first ship from the port is known, the next step is to calculate the time interval if the first and second ships will meet. We can calculate it by dividing the distance of the first ship with the port and the difference in speed of the first ship and the second ship. 50: 20 = 2.5 hours

The time interval between the first ship and the second ship meets is known, the next step is to calculate the distance of ship 1 and ship 2 will meet. We can calculate it by multiplying the speed of the second ship with the time the first ship and the second ship will meet. 60 x 2.5 = 150 miles.

So the first ship and the second ship will meet at a distance of 150 miles in 2.5 hours.

<h2>Further explanation </h2>

Comparison is comparing 2 or more of the same magnitude and shown with the simplest value.

The comparison can be divided into:

  • Value Comparison
  • Comparison of Value Turns

It is important to know that comparisons must:

  • It has the same amount.  ex: fruit compared to fruit, miles by miles.
  • Shows the smallest or simplest value from both sides.
  • The value of both sides is a natural number.

Learn more

Comparison of brainly.com/question/733174, brainly.com/question/8056413

Details

Class: Middle School

Subject: Mathematics

Keyword: How to calculate the comparison.

8 0
2 years ago
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