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HACTEHA [7]
3 years ago
5

2x+3=4 3x+y=solve by graphing and plz show work

Mathematics
2 answers:
xenn [34]3 years ago
6 0
The answer is x = 1/2
ch4aika [34]3 years ago
3 0

Answer:

2x+3=4

   -3  -3

2x=1

-------

 2

x=1/2

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A jar holds 16 ounces of honey. A cook is going to make two recipes. One calls for 2.5 ounces of honey, and the other calls for
4vir4ik [10]
The cook should have 9.25 ounces remaining
8 0
3 years ago
Sarah is building a 10-foot-long pen for her pet rabbits. She wants to make gravel bases for two circular food containers
TEA [102]

Answer:

y ≥ 4x

y ≤ 8.75 –1/2πx^2

Step-by-step explanation:

Because the diameters of the gravel bases added together cannot exceed the width of the pen, we get the inequality 2x + 2x ≤ y . Rewriting, we get y ≥ 4x as the first inequality in the system.

Next, write an inequality for cost.

To write the expression for the cost of the fencing, find the perimeter of the rectangle, and multiply the perimeter by the cost per foot of fencing. The pen is a rectangle, so the perimeter is 2(10) + 2(y), or 20 + 2y. Multiply the cost of the fencing material ($4.00 per foot) by the perimeter of the fence to get 4(20 + 2y).

Now, write an expression for the gravel bases for the circular food containers. Because A = r2 and the cost of the gravel is $2.00 per square foot, multiply the cost of the material by the sum of these areas to get 2(x2) + 2(x2).

The total cost must be less than or equal to $150. So, we can say that 4(20 + 2y) + 2(x2) + 2(x2) ≤ 150. After simplifying and solving for y: y ≤ 8.75 – x2.

So, this is the system:

y ≥ 4x

y ≤ 8.75 –1/2πx^2

7 0
3 years ago
Jerry purchases a used sofa for $275. He cleans and reupholsters the sofa to make it look brand new. After all the improvements,
GaryK [48]

Answer:

<h2>$110</h2>

Step-by-step explanation:

Step one:

we are told that  the cost of the sofa is $275

also, he sells it for 40% more of the cost price

let us find 40% of $275

=40/100*275

=0.4*275

=110

=$110

Step two:

This means that the selling price is 275+110

=$385

profit = selling price- cost price

profit=385-275

profit=$110

3 0
3 years ago
Can someone help me with this one? I'm not understanding it D:
Katen [24]

Answer:

3

Step-by-step explanation:

A perfect square is a number made by squaring a whole number, such as 25 which is 5². 26 however is made my soaring a decimal and is therefore not a perfect square.

5 0
3 years ago
Can somebody help me with this please, I need it ASAP
andreyandreev [35.5K]

Answer:fr

Step-by-step explanation no cap

6 0
3 years ago
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