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3 years ago

If a gardener can mow a lawn in 40 min, what portion of the lawn can the gardener mow in 1 min?

Mathematics

1 answer:

Olenka [21]3 years ago

5 0

If a gardener can mow the entire lawn in 40 minutes. In 1 minute he will only be able to mow a 40th part of the lawn.

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Please Help

lesya692 [45]

2x+3x+2=-4(cause y=3x+2)
5x=-6
x=-6/5
f(-6/5)=-8/5
negative 6 over 5

6 0

3 years ago

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Determine the value of the variable that makes the equation true. 12-b=12.5

dusya [7]

Answer:

B = -.5

Step-by-step explanation:

If B is negative is cancels out the prexisting negative making it positive.

6 0

2 years ago

What are the values of m and n in the matrix addition below?

Aleksandr [31]

ANSWER

The correct answer is $m=45,n=12$ .

<u>EXPLANATION</u>

We were given the matrix equation;

$\left[\begin{array}{cc}n-1&6\\-19&m+3\end{array}\right] +\left[\begin{array}{cc}-1&0\\16&-8\end{array}\right] =\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

We must first simplify the Left Hand Side of the equation by adding corresponding entries.

$\left[\begin{array}{cc}n-1+-1&6+0\\-19+16&m+3-8\end{array}\right]=\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

That is;

$\left[\begin{array}{cc}n-2&6\\-3&m-5\end{array}\right]=\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

Since the two matrices are equal, their corresponding entries are also equal. we equate corresponding entries and solve for m and n.

This implies that;

$n-2=10$

We got this equation from row one-column one entry of both matrices.

$n=12$

Also, the row three-column three entries of both matrices will give us the equation;

$m-5=40$

$m=45$

Hence the correct answer is $m=45,n=12$ .

The correct option is option 2

6 0

2 years ago

WORD PROBLEMS

kotegsom [21]

Answer:

The answer is

Step-by-step explanation:

Step by step

3 0

2 years ago

There are 3 people who are chosen to serve on a comitee out of a group of 3 girls and 4 boys. How many different committees can

atroni [7]

<span> 35 would be your answer.</span>

6 0

2 years ago

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