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USPshnik [31]
3 years ago
12

4/5(2x+5)−4=1 4/5 is a fraction

Mathematics
2 answers:
Natalka [10]3 years ago
5 0

Answer:

x = 5/8

Step-by-step explanation:

muminat3 years ago
3 0

Answer:

x = \frac{5}{8}

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Simplify this step by step<br> <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-5jk%7D%7B35j%5E2k%5E2%7D%20" id="TexFormula1" tit
VikaD [51]
\frac { -5jk }{ 35{ j }^{ 2 }{ k }^{ 2 } } \\ \\ =-\frac { 5 }{ 35 } \cdot \frac { j }{ { j }^{ 2 } } \cdot \frac { k }{ { k }^{ 2 } } \\ \\ =-\frac { 1 }{ 7 } \cdot \frac { 1 }{ j } \cdot \frac { 1 }{ k } \\ \\ =-\frac { 1 }{ 7jk }

Remember that:

\frac { j }{ { j }^{ 2 } } =\frac { 1 }{ j } \cdot \frac { j }{ j } =\frac { 1 }{ j } \cdot 1=\frac { 1 }{ j } \\ \\ \frac { k }{ { k }^{ 2 } } =\frac { 1 }{ k } \cdot \frac { k }{ k } =\frac { 1 }{ k } \cdot 1=\frac { 1 }{ k }
8 0
3 years ago
Read 2 more answers
Describe how a power with a zero exponent and a power with a negative exponent can be simplified?
Liono4ka [1.6K]
-----> A<span>ny number at all with a 0 exponent is 1; anything with a -ve exponent means "1 over" i.e. 5^-1 means 1/5, 23^-4 means 1/23^4 etc. 



</span>----->A number to the power of zero is always 1 
<span>A number to the power of a negative number such as 2^-4 is always the reciprocal to the power of 4 so 2^-4 is in fact (1/2) ^4 = 1/2^4 </span>

<span>3^-3/4 is (1/3)^3/4 </span>

<span>(4/9)^-3/5 is (9/4)^3/5
</span>

--->Any number with a zero exponent is equal to 1. A number n to the -x is equal to 1/(n^x)<span>



To simplify a negative exponent expression , I attached an example it is easier that way :)


Hope that helps.xoxo

</span>

7 0
3 years ago
Read 2 more answers
Please help me latterly i posted this and no one bothered too help me plz i beg of u i really need help u have no idea i am fail
Nostrana [21]

1. An equation for income, I = 3c + 2p, where c is the number of calendars sold and p is the number of posters sold.

2. When 25 calendars and 18 posters are sold, the income is $111.

3. Income for selling 12 calendars and 15 posters is $66.

4. 3 possible combinations; 1) 30 calendars and 5 posters. 2) 20 calendars and 20 posters. 3) 10 calendars and 35 posters.

Step-by-step explanation:

Step 1; It is given that each calendar costs $3 and each poster costs $2. So if c is the number of calendars sold and p is the number of posters sold.

Total income, I = 3c + 2p.

Step 2; Now if we substitute the value of c with 25 and p with 18, we get

I = 3c + 2p = 3 (25) + 2 (18) = 75 + 36 = $111.

Step 3; If the value of p is 12 and the value of c is 15, we have

I = 3c + 2p = 3 (12) + 2 (15) = 36 + 30 = $66.

Step 4; To find combinations that cost $100, we substitute I with 100. So the equation becomes 3c + 2p = 100.

When c = 30, 3 (30) + 2p = 100, 2p = 100 - 90 = 10, 2p = 10, p =5.

When c = 20, 3 (20) + 2p = 100, 2p = 100 - 60 = 40, 2p = 40, p = 20.

When c = 10, 3 (10) + 2p = 100, 2p = 100 - 30 = 70, 2p = 70, p = 35.

4 0
4 years ago
Please help. I have to submit it before 3:00. I will be posting more questions like these if you want to answer them. Thank you.
Gwar [14]

Answer:

(4,-3)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Do you know the domain and range​
attashe74 [19]

Answer:

Domain (-1,1]

Range (-1,5]

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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