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2 years ago

9

Lara and Mae participated in a quiz contest. They scored 23 points in all. If Lara scored 9 points, how many points did Mae scor

e?

1 answer:

emmainna [20.7K]2 years ago

7 0

Answer:

14

Step-by-step explanation:

23-9=14 if Lara only scored 9 points, Mae would have had to get the rest so you have to subtract 9 from the total amount of points.

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dalvyx [7]

The answers C I’m not sure if I’m too late

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2 years ago

To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?

yan [13]

Answer:

24 ounces

Step-by-step explanation:

Here's a more intuitive approach to use here.

You know that your initial solution has a percent concentration, presumably volume by volume, of

25

%

. This means that any volume of this solution contains

1

part solute and

3

parts solvent.

The target solution must have a concentration of

10

%

, which means that any volume of this solution will contain

1

part of solute and

9

parts solvent.

Your starting solution has a volume of

16

ounces, or

4

parts, each with a volume of

4

ounces.

In order to get to a solution that has a total of

10

parts, you must add

6

parts of solvent to the initial solution. Since we know that

1 part

=

4 ounces

it follows that you must add

6

parts

⋅

4 ounces

1

part solvent

=

24 ounces

of distilled water, which is your solvent, to the initial solution.

The target solution will contain

1

part solute and

9

parts distilled water for a total of

10

parts of solution, and hence have a percent concentration of

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7 0

3 years ago

Hardy has three times as many tennis balls as kerns. They have 940 tennis balls in all. How many tennis balls does Hardy have th

topjm [15]

Answer:

Hardy has 470 more tennis balls than Kerns.

Step-by-step explanation:

Given that:

Total number of tennis balls = 940

Let,

x represents the number of tennis balls Hardy has.

y represents the number of tennis balls Kerns has.

According to given statement,

x+y=940 Eqn 1

x = 3y Eqn 2

Putting x = 3y in Eqn 1

3y+y=940

4y=940

Dividing both sides by 4

$\frac{4y}{4}=\frac{940}{4}\\y=235$

Putting y=235 in Eqn 2

x = 3(235)

x = 705

Difference = Hardy's tennis balls - Kerns' tennis balls

Difference = 705 - 235 = 470

Hence,

Hardy has 470 more tennis balls than Kerns.

3 0

3 years ago

50×60×8000 f(x)=4000× f (y)=

Aloiza [94]

Answer:

9,600,000,000 F (y)=5000

Step-by-step explanation:

hope for help po

4 0

2 years ago

A manufacturer of prefabricated homes has decided to subcontract four components of the homes. Several companies are interested

Xelga [282]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

Let $x_{ij}=1$ when i is the element itself is allocated to 'j' $i_0$

Min

$185X_{1A}+225X_{1B} +193X_{1C} +207X_{1D} +200X_{2A} +190X_{2B} +175X_{2C}+225X_{2D}+330X_{3A} +320X_{3B} +315X_{3C}+300X_{3D}+375X_{4A}+389X_{4B}+425X_{4C}+ 445X_{4D}$

Subject to:

$X_{1A} +X_{1B}+X_{1C}+X_{1D}=1\\\\X_{2A} +X_{2B}+X_{2C}+X_{2D}=1\\\\X_{3A} +X_{3B}+X_{3C}+X_{3D}=1\\\\X_{4A} +X_{4B}+X_{4C}+X_{4D}=1\\\\X_{1A} +X_{2A}+X_{3A}+X_{4A}=1\\\\X_{1B} +X_{2B}+X_{3B}+X_{3B}=1\\\\X_{1C} +X_{2C}+X_{3C}+X_{4C}=1\\\\X_{1D} +X_{2D}+X_{3D}+X_{4D}=1$

4 0

3 years ago