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emmainna [20.7K]
3 years ago
14

2X-1/4y=1 solve for Y

Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

Y=8x-4

Step-by-step explanation:

2x -1/4y= 1

2x -1 = 1/4 y

4(2x -1) =y

8x -4 = y

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(−t 4 −5t 3 −10t 2 )+(9t 3 +3t 2 −1)
klemol [59]

Answer:

\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1

Step-by-step explanation:

Given the expression

\left(-t^4\:-5t^3\:-10t^2\:\right)+\left(9t^3\:+3t^2\:-1\right)

Remove parentheses:  (a)=a

=-t^4-5t^3-10t^2+9t^3+3t^2-1

Group like terms

=-t^4-5t^3+9t^3-10t^2+3t^2-1

Add similar elements        

=-t^4-5t^3+9t^3-7t^2-1         ∵ -10t^2+3t^2=-7t^2

Add similar elements        

=-t^4+4t^3-7t^2-1                  ∵  -5t^3+9t^3=4t^3

Thus, the equivalent expression in simplified form:

\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1

4 0
3 years ago
Jackie has $32.50 to buy a new pair of jeans. The pair she likes costs $38 but is marked “20% off ticketed price.” The sales tax
ohaa [14]
Hello! So, the jeans are 20% off of the original price. While she gets 20% off of the jeans, she still has to pay 80% of the price. To find out the discount price, multiply 38 by 80% (0.8). 38 * 0.8 is 30.4 $30.40 is the discount price. There is 5% tax on the item. First off, let's add 1 to the rate. 5% is 0.05 in decimal form. 1 + 0.05 is 1.05. We add 1 to the percentage rate, because adding that and multiplying that amount will bring us straight to the new price. Now, multiply 30.4 and 1.05 together to get the new price. When you do, you get 31.92. $31.92 is the price of the jeans. 31.92 < 32.50. Jackie has enough money to buy the jeans.
4 0
2 years ago
6 8/10 + 1 7/10 =<br> please help meee
balandron [24]

Answer:

8.2

Step-by-step explanation:

Hope this helps....

6 0
2 years ago
Read 2 more answers
Please helppp!!! (100 points)
tester [92]
1.86·10 to the 13th power
6 0
3 years ago
Read 2 more answers
Joni said that she could rewrite the expression d^3•d^11 as d^33. What mistake did Joni make?
Rudik [331]

Answer:

Joni's mistake was to multiply the exponents instead of adding the exponents.

Step-by-step explanation:

we know that

When multiplying two powers that have the same base, you can add the exponents

so

d^{3} *d^{11} =d^{3+11}=d^{14}

Joni's mistake was to multiply the exponents instead of adding the exponents.

7 0
3 years ago
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