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melamori03 [73]
3 years ago
7

PLEASE HELP! OK, will mark best straight answer with brainIlest (with explanation) URGENT! Justin's sand castle is 180 cm tall b

ut the wind is blowing away sand at a rate of 8 cm per minute. Taylor's sand castle is 160 cm tall and she is adding sand to it at a rate of 6 cm per minute. After how many minutes will their sand castles be at an equal height?
Mathematics
1 answer:
user100 [1]3 years ago
8 0

Answer:

I think around 17 min...

Step-by-step explanation:

there is 60 sec in a minute so divide 60/8 , divide 60/6, then add them together....

60/8= 7.5 and 60/ 6=10

so 7.5+10 = 17.5

somewhere around thereStep-by-step explanation:

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John is 3 years younger than twice Monica's age. If m represents Monica's age, which equation can be used to find j, John's age?
AnnZ [28]

Answer:

J =2m -3

Step-by-step explanation:

2m is twice Monica's age

-3 represents 3 years younger

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3 years ago
If y=3x+1 were changed to y=x+1 how would the graph of the new function compare with the original?
Olegator [25]
F(x)=3x+1  (preimage)
g(x)=x+1  (image)
it is undergoing a reduction/compression with translation.
In general, a linear transformation is
g(x) = a*f(bx-h)+k
h=horizontal translation (right if h>0, left if h<0, note formula has minus sign)
k=vertical translation (up if k>0, down if k<0)
a=vertical stretching, (stretching if |a|>1, compression if |a|<1, also, if a<0, a reflection across the x-axis is performed)
b=horizontal stretching (|b|>0 compression, |b|<0 stretching, also, if b<0, a reflection across the y-axis is performed)

In this case, 
g(x)=f(x/3), so it is a horizontal stretching.
Note that the y-intercept remains unchanged.
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3 years ago
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Lera25 [3.4K]
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What is the length of the unknown side of the right triangle? (1 point)
scoundrel [369]

Answer:

The answer is a

Step-by-step explanation:

4 0
3 years ago
What is the slope of a line that is perpendicular to the graph of y = –3x?
Morgarella [4.7K]

Step-by-step explanation:

Hey there!

The equation is; y= -3x

or, 3x+y = 0.......... (I)

From equation (I)

slope(m1) =  \frac{ - coeff. \: of \: x}{coeff. \: of \: y}

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Therefore, m= -3

Now, As per the condition of perpendicular lines;

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M2= -1/-3

Therefore, the slope of a line which is perpendicular to the equation is; 1/3.

<em><u>Hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

7 0
3 years ago
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