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3 years ago

-0.70 — (-2/5)+ 0.4 + (-1/4)

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

5 0

Answer:

-0.15

Step-by-step explanation:

the easiest way to do this is to convert all of the numbers to decimals. -2/5 becomes -0.4, and -1/4 becomes -0.25. Then you simplify the equation to get - 0.7 + 0.4 + 0.4 - 0.25, which you then solve to get -0.15.

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Use distributive property to remove the parentheses. Simplify your answer as much as possible please.

slavikrds [6]

Answer:

28y^3 -35y^5

Step-by-step explanation:

= 7y^3(4) -7y^3(5y^2)

= 28y^3 -35y^5

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The applicable rule of exponents is ...

(y^a)(y^b) = y^(a+b)

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=7%20-%204%20%5Cfrac%7B3%7D%7B4%7D%20" id="TexFormula1" title="7 - 4 \frac{3}{4} " alt="7 - 4 \

AlladinOne [14]

7 - 4 3/4

= 28/4 - 19/4 = 9/4

Answer is 2 1/4 or 2.25.

5 0

4 years ago

Problem solving your family has a rectangular pool that measures 18 feet by 9 feet. your family wants to put a deck around the p

tester [92]

Let w be the width of the deck. Then, using the total area, we get:
(9+2w)(18+2w)=400
4w²+54w-238=0
2w²+27w-119=0
(2w-7)(w+17)=0
w=-17 or 7/2
Using the positive value, we get a width of 3&1/2 ft. for the deck
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7 0

3 years ago

I need help with this problem PLEASE HELP

xxTIMURxx [149]

The domain of the function is: {-5, -3, -1, 1}

The range of the function is: {-5, -3, -1, 1}

<h3>How to Determine the Range and the Domain of a Function?</h3>

In any given graph that represents a function, the possible set of domain values are plotted on the x-axis (horizontal axis), while the possible set of corresponding range values are plotted on the y-axis (vertical axis).

Thus, the set of x-values (input values) on a graph is the domain of the function while the set of y-values (output values) is the range of the function.

In the given graph, the set of x-values are: -5, -3, -1, and 1.

The set of y-values are: -5, -3, -1, and 1.

Therefore:

The domain of the function is: {-5, -3, -1, 1}

The range of the function is: {-5, -3, -1, 1}

Learn more about the domain and range of a function on:

brainly.com/question/10197594

#SPJ1

7 0

2 years ago

Helppp lol<br><br>which system of linear equations is represented by the graph?

kondaur [170]

Answer:

Step-by-step explanation:

Consider the y - intercept and slope of 1 of these given lines,

$y - intercept = ( 0, - 2 ) / - 2\\slope = 1 / 1 = 1$

From this we can formulate the equation of 1 line;

$Take Equation In the Form - y = ax + b, a - slope, and , b - y intercept,\\y = ax + b, a = 1, b = - 2,\\Equation of Line 1 - y = x - 2$

Now consider the y - intercept and slope of the remaining line;

$y - intercept = ( 0, 2 ) / 2\\slope = 1 / - 2 = - \frac{ 1 }{ 2 }$

This creates a line with the equation as such;

$Take Equation In the Form - y = ax + b, a - slope, and , b - y intercept,\\y = ax + b, a = - 1 / 2, b = 2,\\Equation of Line 1 - y = - \frac{ 1 }{ 2 } x + 2, x + 2y = 4$

From this we see that the solution of the system is such;

<em>Solution ; y ≥ x - 2, and x + 2y < 4 ; Option C</em>

6 0

4 years ago