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3 years ago

3x+1+2x=2+4x which would not be a step in solving

Mathematics

1 answer:

KIM [24]3 years ago

4 0

Answer:

hey u there answer me backkk

Step-by-step explanation:

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What is used to locate points in the coordinate plane

Maru [420]

The x axis and the y axis

3 0

4 years ago

Two hoses are filling a pool the first hose fills at a rate of x gallons per minute the second hose fills at a rate of 15 gallon

Zielflug [23.3K]

Answer:

B. (0, 5]∪(15,30] only (15,30] contains viable rates for the hoses.

Step-by-step explanation:

The question is incomplete. Find the complete question in the comment section.

For us to meet the pool maintenance company's schedule, the pool needs to fill at a combined

rate of at least 10 gallons per minute. If the inequality represents the combined rates of the hoses is 1/x+1/x-15≥10 we are to find all solutions to the inequality and identifies which interval(s) contain viable filling rates for the hoses. On simplifying the equation;

$\frac{1}{x} + \frac{1}{x-15} \geq \frac{1}{10}\\\\ find\ the \ LCM \ of \ the function \ on \ the \ LHS\\\\\frac{x-15+x}{x(x-15)} \geq \frac{1}{10}\\\\\frac{2x-15}{x(x-15)} \geq \frac{1}{10}\\\\10(2x-15)\geq x(x-15)\\\\20x-150\geq x^2-15x\\\\collect \ like \ terms\\-x^2+20x+15x - 150\geq 0\\$

$-x^2+35x-150 \geq 0\\\\multipply \ through \ by \ minus\\x^2-35x+150 \leq 0\\\\(x^2-5x)-(30x+150) \leq 0\\\\x(x-5)-30(x-5) \leq 0\\\\$

$(x-5)(x-30) \leq 0\\\\x-5 \leq 0 and x - 30 \leq 0\\\\x \leq 5 \ and \ x \leq 30$

The interval contains all viable rate are values of x that are less than 30. The range of interval is (0, 5]∪(15,30]. Since the pool needs to fill at a combined rate of <em>at least 10 gallons per minute</em> for the pool to meet the company's schedule, <em>this means that the range of value of gallon must be more than 10, hence (15, 30] is the interval that contains the viable rates for the hoses.</em>

6 0

3 years ago

Greg’s home is 1.8 miles from his school there is a music store halfway between school and his home today Greg wants to stop at

Darya [45]

I'm guessing the question is "how far does he have to walk to the store from where he is"

if he is walking home, then hmm
distance from store to school=1.8/2 since it is halfway, so 0.9 miles

he has walked 0.36 miles
so he needs to walk 0.90-0.36=0.54 miles

he needs to talk 0.54 miles to get to the store

8 0

3 years ago

There are 645 students at Tech Middle School, and

forsale [732]

Answer:

.20

Step-by-step explanation:

The word percent literally means "Out of 100". With that being said, 20% can be written as a fraction, mixed number or whole number as follows: 1/5 (fraction), 20/100 (mixed number) or .20 (whole number).

3 0

3 years ago

Can someone please help me with this problem?

Simora [160]

Answer:

y = (31/21)x + 5

Step-by-step explanation:

6 0

3 years ago