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3 years ago

Whats the solution.?

Mathematics

2 answers:

Margaret [11]3 years ago

6 0

x-4=-1/5x+2
Add 4 to both sides
x=-1/5x+6
Add 1/5x to both sides
6/5x=6
Multiply each side by 6/5
X=7.2

Viefleur [7K]3 years ago

4 0

Answer:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

y-(x-4)=0

STEP

Equation of a Straight Line

1.1 Solve y-x+4 = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line y-x+4 = 0 and calculate its properties

Step-by-step explanation:

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279 is 33 1/2 of what amount

ycow [4]

Answer:

33% of 279 is equivalent to multiplying them: 33% × 279.

Step-by-step explanation:

4 0

3 years ago

A building in the shape of a square pyramid is being built in Las Vegas. The height of the building will be 309 feet, and a size

finlep [7]

Answer: 51.5 cubic feet.

Step-by-step explanation:

Since, The height of the building will be 309 feet, and a size of the base measures 250 feet.

And, we know that the volume of the square pyramid = $(size of the base)^2\times \frac{height}{3}$

Here, size of the base of the square pyramid = 250 feet.

And, height = 309 feet.

Therefore, the volume of the given square pyramid,

$V=(250)^2\times\frac{309}{3}$

⇒ $V=62500 \times\frac{309}{3}$

⇒ $V= \frac{19312500}{3}$ = 6437500 cubic feet.

Again according to the question,

The scale model that is displayed at a convention is one fiftieth the size of the actual building.

Therefore, Volume of the scale model = the volume of the given square pyramid/125000

= 6437500/125000= 51.5 cubic feet.

Thus, the volume of the scale model is 51.5 cubic feet.

6 0

4 years ago

A scientist need 10 L of a 20% acid solution for an experiment where she had only a 5% solution and a 40% solution to the neares

andrezito [222]

Answer:

Amount of 5% solution = 5.7 Litres

Amount of 40% solution = 4.3 Litres

Step-by-step explanation:

First, of all, let x be the amount of 5% solution used

Since, the scientist needs 10 L of solution, then;

Let 10 - x be the amount of 40% solution used

Now, we are told that she needs 10 L of a 20% acid solution.

This means that;

5%x + 40%(10 - x) = 20%(10).

Simplifying this gives;

0.05x + 0.40(10 - x) = 0.20 × 10

Expanding the bracket gives;

0.05x + 4 - 0.4x = 2

0.4x - 0.05x = 4 - 2

0.35x = 2

x = 2/0.35

x ≈ 5.7 litres

Thus, she will need to mix 5.7 liters of the 5% solution.

Since 10 - x be the amount of 40% solution used , then;

the amount of 40% solution = 10 - 5.7 = 4.3 litres

4 0

4 years ago

What is an inherent zero? describe three examples of data sets that have inherent zeros and three that do not.

julia-pushkina [17]

The inherent zero is simply a zero. The three instances for both are-

the average age among college graduates, average monthly body weight, maximum wind velocity during a hurricane with intrinsic zero.
Year of birth, body weight in space, and year of automobile accidents are three that do not.

<h3>What is inherent zero?</h3>

The absolute zero is another name for the intrinsic zero. This is not included in the interval scale because, while the disparity between the two observations makes sense, the ratio does not because it lacks an inherent zero.

Some key features of inherent zero are-

In statistics, the inherent zero is regarded as the starting point or reference point for the ratio scale.
The scale with an inherent zero is called as the ratio scale, since we can then compute the ratio between observations and comment on the number of times one observation is less than or bigger than another.

To know more about the inherent zero, here

brainly.com/question/18558553

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6 0

2 years ago

Bob traveled 90 miles which was 83 1/3 % of his trip. How long was the trip?

lilavasa [31]

Let x be total amount traveled Therefore, x(.8333) = 90 x = 108 108 miles

hope i helped

5 0

3 years ago

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