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Dmitry [639]
3 years ago
14

Math help! HELP ME ASAP!!!!!!!!

Mathematics
2 answers:
olchik [2.2K]3 years ago
5 0
<span>Simplifying 5x + 2y = 9 Solving 5x + 2y = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2y' to each side of the equation. 5x + 2y + -2y = 9 + -2y Combine like terms: 2y + -2y = 0 5x + 0 = 9 + -2y 5x = 9 + -2y Divide each side by '5'. x = 1.8 + -0.4y Simplifying x = 1.8 + -0.4y Hope i helped :)</span>
tensa zangetsu [6.8K]3 years ago
4 0
-- Take each choice.

-- Write the first number in place of 'x'.
   Write the second number in place of 'y'.

-- If the equation is true, then the choice is a solution of the equation.

(If this is really high school, then you're supposed to know this by now.)
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a bike store marks up the wholesale cost of all bikes by 30%. Calvin wants to buy a bike that has a price tag of $125. What was
Mashutka [201]

Answer:

$162.50

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If the volume of the bat is 82
Assoli18 [71]

The volume that is left to be filled is approximately: 3,332.6 in.³

<h3>What is the Volume of a Box?</h3>

Volume of a box = (length)(width)(height)

Given the following:

Volume of the bat = 82 cubic in.

Length of box = 30 in.

Width = 18.97 in.

Height = 6 in.

The remaining volume to be filled = volume of box - volume of bat

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4 0
2 years ago
Newton’s law of cooling states that the temperature of an object changes at a rate proportionalto the difference between the tem
Verizon [17]

Answer:

\frac{dT}{dt} = -0.05\;min^{-1}  (T-70\ºF)

Step-by-step explanation:

Hi!

Lets call:

T = temprature of the object

T₀ = temperature of surroundings

t = time

The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

\frac{dT}{dt} = -k(T-T_0) \\

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

\frac{dT}{dt} = -0.05\;min^{-1}  (T-70\ºF)

3 0
3 years ago
I need help pls!!!!!
belka [17]

Answer:

The sales price is 90% of the regular price.

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8 0
3 years ago
Solve the following linear system of equations using substitution. <br> Y=3x-5<br> Y=2x-6
Anettt [7]
3x-5=2x-6
Move 2x to the same side as 3x.
3x-2x = x
X-5=-6
add 5 to the -6.
X = 5-6
X=-1
7 0
3 years ago
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