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3 years ago

2x + y = 9 5x + 3y = 26

Mathematics

1 answer:

Tanya [424]3 years ago

5 0

Answer:

7X+4y=35

Step-by-step explanation:

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Suppose that an object is dropped from a height of

Kamila [148]

Make hours to seconds to match meters
19.6*3600=70560 seconds
And is dropped from a height of 15.4 meters then the velocity will be
15.4m/70560s = 0.0002182539m/s

8 0

3 years ago

Mai wants to make an open top box by cutting out corners of a square piece of cardboard and folding up the sides. The cardboard

Bumek [7]

Answer:

$V(x)=(4x^{3}-40x^{2}+100x)\ cm^3$

The domain for x is all real numbers greater than zero and less than 5 com

Step-by-step explanation:

<em><u>The question is</u></em>

What is the volume of the open top box as a function of the side length x in cm of the square cutouts?

see the attached figure to better understand the problem

Let

x -----> the side length in cm of the square cutouts

we know that

The volume of the open top box is

$V=LWH$

we have

$L=(10-2x)\ cm$

$W=(10-2x)\ cm$

$H=x)\ cm$

substitute

$V(x)=(10-2x)(10-2x)x\\\\V(x)=(100-40x+4x^{2})x\\\\V(x)=(4x^{3}-40x^{2}+100x)\ cm^3$

Find the domain for x

we know that

$(10-2x) > 0\\10> 2x\\ 5 > x\\x < 5\ cm$

The domain is the interval (0,5)

The domain is all real numbers greater than zero and less than 5 cm

therefore

The volume of the open top box as a function of the side length x in cm of the square cutouts is

$V(x)=(4x^{3}-40x^{2}+100x)\ cm^3$

5 0

3 years ago

A car is traveling at a rate of 81 kilometers per hour. What is the car's rate in kilometers per minute? How many kilometers wil

shusha [124]

Only doing thos for the getting to knothinf

8 0

3 years ago

The Bar Chart shows the weights of 10 dogs entered in a local dog show,

hammer [34]

Is there any picture ?

7 0

2 years ago

Help please and explain

tresset_1 [31]

Answer:

30 ft

Step-by-step explanation:

We can use ratios

3 6

------ = ------------

15 x

Using cross products

3x = 6*15

Divide each side by 3

3x/3 = 6*15/3

x = 30

5 0

3 years ago

Read 2 more answers