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Anit [1.1K]
3 years ago
10

Ireland owes her dad $100. She plans on paying him $20 per week until it is paid off.

Mathematics
1 answer:
ivolga24 [154]3 years ago
7 0

Answer:

5 weeks

Step-by-step explanation:

I believe your looking for the time it will take her to pay it off.

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Simplify (x ^2 y)^3. x 2y 3, x 5 y 3, x 6 y 3^
Veronika [31]

Answer:

x^6 y^3

Step-by-step explanation:

(x ^2 y)^3

We know that (ab)^c = a^c  b^c

x^2^3 * y^3

We know that a^b^c = a^(b*c)

x^(2*3) y^3

x^6 y^3

8 0
3 years ago
Let f(x) = cos(x). Use Addition or Subtraction Formulas to show the following.
uysha [10]

Answer:

First blank is cos(h)cos(x)

Second blank is sin(x)

Step-by-step explanation:

Look up the identity and apply it here

7 0
2 years ago
What is the mathematical phrase of the ratio v to seven​
kicyunya [14]

Answer:

v:7

Step-by-step explanation:

uh i think its v:7

6 0
2 years ago
4. During a 12- hour period, the temperature dropped 48°. How many degrees did the temperature drop each hour.
uranmaximum [27]

Answer:

-4

Step-by-step explanation:

3 0
3 years ago
Add 2x4 - 6x3 + 5x to the difference between 9x3 + 8x2 - 2 and 4x4 - 2x2 + 8x - 5.
DedPeter [7]

Simplify (x3 +  3x2 + 5x – 4) –  (3x3 – 8x2 – 5x + 6)

The first thing I have to do is take that "minus" sign through the parentheses containing the second polynomial. Some students find it helpful to put a "1" in front of the parentheses, to help them keep track of the minus sign.

Here's what the subtraction looks like, when working horizontally:

(x3 + 3x2 + 5x – 4) – (3x3 – 8x2 – 5x + 6)

(x3 + 3x2 + 5x – 4) – 1(3x3 – 8x2 – 5x + 6)

(x3 + 3x2 + 5x – 4) – 1(3x3) – 1 (–8x2) – 1(–5x) – 1(6)

x3 + 3x2 + 5x – 4 – 3x3 + 8x2 + 5x – 6

x3 – 3x3 + 3x2 + 8x2 + 5x + 5x – 4 – 6

–2x3 + 11x2 + 10x –10

And here's what the subtraction looks like, when going vertically:

x

3

−(3x

3

​

 

+3x

2

−8x

2

​

 

+5x

−5x

​

 

−4

+6)

​

​

In the horizontal addition (above), you may have noticed that running the negative through the parentheses changed the sign on each and every term inside those parentheses. The shortcut when working vertically is to not bother writing in the subtaction sign or the parentheses; instead, write the second polynomial in the second row, and then just flip all the signs in that row, "plus" to "minus" and "minus" to "plus".

\

x

3

–3x

3

−2x

3

​

 

+3x

2

+8x

2

+11x

2

​

 

+5x

+5x

+10x

​

 

−4

–6

−10

​

​

Either way, I get the answer:

–2x3 + 11x2 + 10x – 10

4 0
3 years ago
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