3 years ago

Solve for x. 4.2x + 0.8x = 5*

Mathematics

1 answer:

Andrei [34K]3 years ago

6 0

Answer:

x=1

Step-by-step explanation:

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Match the following situation with one of the linear systems. Lewis wants to acquire at most 12 packages of baseball cards. Some

Akimi4 [234]

Y=4x-38
y=3x-38
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3 years ago

Solve for x in the equation x2+2x+1= 17.<br> x=-1: V15<br> x=-11/17<br> X=-2=2.5<br> X=-11 13

Shalnov [3]

Answer:

x=-1

Step-by-step explanation:

x^2+2x=16=0

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)/

Substitute the values

a=1, b=2, and c=−16 into the quadratic formula and solve for x

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3 years ago

Please solve this equations y=6x²-5,y=17x-6/x

Amiraneli [1.4K]

Answer:

$x=3, y = 49\\x=0.5, y = -3.5\\x=-0.67, y = -2.31$

Step-by-step explanation:

$y=6x^2-5\\y=17x-\frac{6}{x}$

Let's substitute the first equation into the second one.

$6x^2-5=17x-\frac{6}{x}$

$6x^3-17x^2-5x+6=0$ - Multiply by $x$ and bring all the terms to one side.

I'll use my graphical calculator to solve this but you could factor:

$x=3\\x=0.5\\x=-0.67$ (All rounded to 2 decimal places)

Now we can substitute these $x$ values into an equation for $y$ .

$y=6x^2 - 5$

$x=3, y = 49\\x=0.5, y = -3.5\\x=-0.67, y = -2.31$

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3 years ago

A coin bank has 17 coins that contains only dimes and quarters. The coins are worth $3.35. How many of each coin are in the bank

Dafna11 [192]

Answer:7 quarters and 6 dimes

Step-by-step explanation:

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3 years ago

What's the area below?

Marina86 [1]

I honestly have no idea :) :S ur welcome

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3 years ago