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4 years ago

What number between 250 and 260 that is divisible by 9

Mathematics

1 answer:

butalik [34]4 years ago

3 0

28 I feel lucky. Let me know.

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You need a 30% alcohol solution. On hand, you have a 780 mL of a 15% alcohol mixture. You also have 90%

ycow [4]

Answer:

195 mL of the 90% solution

Step-by-step explanation:

Let the number of mL of 90% mixture = x

Hence, our equation is

780mL × 15% + x mL × 90% = (780mL + x) 30%

117 + 0.9x = 234 + 0.3x

Collect like terms

0.9x - 0.3x = 234 - 117

0.6x = 117

x = 117/0.6

x = 195 mL

Therefore, You will need 195 mL of the 90% solution

5 0

3 years ago

The Wellbuilt Company produces two types of wood chippers, economy and deluxe. The deluxe model requires 3 hours to assemble and

seropon [69]

Answer:

The maximum profit is reached with 4 deluxe units and 6 economy units.

Step-by-step explanation:

This is a linear programming problem.

We have to optimize a function (maximize profits). This function is given by:

$P=98D+72E$

being D: number of deluxe units, and E: number of economy units.

The restrictions are:

- Assembly hours: $3D+2E\leq24$

- Paint hours: $0.5D+1E\leq8$

Also, both quantities have to be positive:

$D\geq 0\\\\E\geq0$

We can solve graphically, but we can evaluate the points (D,E) where 2 or more restrictions are saturated (we know that one of this points we will have the maximum profit)

$(8;0) \rightarrow P=98*8+72*0= 784\\\\(0;8) \rightarrow P= 98*0+72*8=576\\\\(4;6) \rightarrow P=98*4+72*6=824$

The maximum profit is reached with 4 deluxe units and 6 economy units.

4 0

3 years ago

Write and solve an equation using symbolic language.

matrenka [14]

Ksksoskaopaoaoaooaoaoaoakksks

6 0

3 years ago

Is a square a special parallelogram

Debora [2.8K]

idk what a special parallelogram is but a square is most definitely a parallelogram :)

Answer:

a square is a quadrilateral but<em><u> is also a parallelogram</u></em>,rectangle and a rhombus

Step-by-step explanation:

a square is many things such as a parallelogram, a rectangle, and a rhombus.

it is a quadrilateral with all right angles and all equal sides

×║hope this helps║×

6 0

3 years ago

Which of the following is not considered a buying incentive?

Tems11 [23]

The answer to this is B.

5 0

4 years ago