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Irina-Kira [14]
4 years ago
13

1.17-0.07a+(-3.92a) please help asap

Mathematics
1 answer:
Dovator [93]4 years ago
4 0

Answer:

1.17-3.99a

Step-by-step explanation:

You can only combine like terms and 1.17 is not a like term to -0.07a and -3.92a

So you can only combine the like terms

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The equation of a circle is x2 + y2 + 6x + 4y + 10 = 1. What is this equation written in its standard form?
Marrrta [24]

Option A: (x+3)^2+(y+2)^2=4 is the equation of the circle

Explanation:

The equation of the circle is x^{2} +y^2+6x+4y+10=1

We need to write the equation of the circle in standard form.

Let us subtract 10 from both sides of the equation.

Thus, we have,

x^{2} +y^2+6x+4y=-9

Grouping the terms,we have,

(x^{2} +6x)+(y^2+4y)=-9

Now, we shall complete the square, let us add and subtract the equation by 9 to write the term \left(x^{2}+6 x\right) in the form of (a+b)^2

Thus, we have,

(x^{2} +6x+9-9)+(y^2+4y)=-9

Simplifying, we get,

(x^{2} +6x+9)+(y^2+4y)=-9+9

       (x+3)^2+(y^2+4y)=0

Similarly, we shall complete the square for the term \left(y^{2}+4 y\right) in the form of (a+b)^2

Thus, we have,

(x+3)^2+(y^2+4y+4-4)=0

Simplifying, we get,

(x+3)^2+(y^2+4y+4)=4

       (x+3)^2+(y+2)^2=4

Thus, the equation of the circle in standard form is (x+3)^2+(y+2)^2=4

Hence, Option A is the correct answer.

3 0
4 years ago
Shauna borrows $400 from her parents to buy a phone. She agrees to pay them back plus 4% simple interest over one year. Part A W
Alona [7]
----------------------------------------------------
Information
----------------------------------------------------
Amount = $400
Interest rate = 4% a year

----------------------------------------------------
Equation
----------------------------------------------------
Total amount = 400 + 0.04(400)
Total amount = 400 + 16
Total amount = $416

----------------------------------------------------
Answer: Total Amount = 400 + 0.04(400)
----------------------------------------------------
5 0
3 years ago
Please help please please help<br> i have tried everything i could think of but i cant figure it out
Vera_Pavlovna [14]

Answer:

\frac{\sqrt[4]{10xy^3}}{2y}

Step-by-step explanation:

I am assuming you want me to rationalize the denominator.

6 0
3 years ago
Convert the following repeating decimal to a fraction in simplest form.<br> .78
Black_prince [1.1K]

Answer:

78/100

Step-by-step explanation:

Since .78 is in the hundredths place just move the decimal two places to the right then put it over 100. But idk if you mistyped this because .78 is not a repeating decimal

7 0
3 years ago
Read 2 more answers
Benjamin started her walk from the front door of her ground floor apartment. She walked 6 meters to the corner of the building a
notsponge [240]

Answer:

<u>4 meters.</u> 

Step-by-step explanation:

Benjamin has walked two legs of a right triangle, so you can connect her two movements with a line if you were sketching the situation.. The displacement is the objects overall change in position in relation to its origin, so in your case, Benjamin's apartment. While the total distance adds up regardless of her position. 

So, the total distance Benjamin walked is 10m + 6m = 16m 

Her displacement can be found by your best friends, the Pythagorean Theorem: 10m ^2 + 6m ^2 = delta x^2 (or displacement squared).. giving you a displacement of 11.66, or 12 m.

The difference between the distance she walked and her displacement is 4 meters. 

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!    

6 0
3 years ago
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