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3 years ago

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I need help please !!

2 answers:

lana [24]3 years ago

3 0

What do you need help with?

crimeas [40]3 years ago

3 0

Um what do u need help with?

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What is the Value of x in the equation 2.5x + 10 = x-0.5 ?

marshall27 [118]

Answer: 7

Step-by-step explanation:

$2.5x+10=x-0.5\\2.5x-x+10=-0.5\\1.5x=-0.5-10\\1.5x=-10.5\\x=\frac{10.5}{1.5}\\ x=7$

7 0

2 years ago

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the price of the a tablet was increased from $180 to $207. by what percentage was the price of the tablet increased?

mixas84 [53]

207-180=27
27/180= .15
It was increased by 15%.

3 0

2 years ago

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Y=-x+3 y = -2.x +7 = 5.

lyudmila [28]

Answer:

Slope: 3/5

y-intercept: 7

Step-by-step explanation:

5 0

3 years ago

1) 5x-2y=4. 2) 3x-5y=13 x-2y=5<br>3x+y=9

Natali [406]

$\left\{\begin{array}{ccc}5x-2y=4\\3x+y=9&/\cdot2\end{array}\right\\+\left\{\begin{array}{ccc}5x-2y=4\\6x+2y=18\end{array}\right\\----------\\.\ \ \ \ \ 11x=22\ \ \ \ /:11\\.\ \ \ \ \ \ \ x=2\\\\3\cdot2+y=9\\6+y=9\\y=9-6\\y=3\\\\Answer:x=2;\ y=3$

$\left\{\begin{array}{ccc}3x-5y=13\\x-2y=5\end{array}\right\\\left\{\begin{array}{ccc}3x-5y=13\\x=2y+5\end{array}\right\\\\substitute:\\\\3(2y+5)-5y=13\\6y+15-5y=13\\y=13-15\\y=-2\\\\x=2\cdot(-2)+5=-4+5=1\\\\Answer:x=1;\ y=-2.$

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2 years ago

Express 6 days to 3 weeks in ratio simplest form

posledela

Answer:

2 : 7

Step-by-step explanation:

6 : 21 (6 for 6 days and 21 days in 3 weeks)

2 : 7 (Simplify by dividing by 3)

4 0

2 years ago

Read 2 more answers