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3 years ago

The difference of a number N and 9 is fewer than 4

Mathematics

1 answer:

denis23 [38]3 years ago

5 0

Any number less than or equal to 12

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Simplify :<br>(3÷7x+5÷4y)2

marissa [1.9K]

Answer:

6/7x+5/2y

Step-by-step explanation:

I actually don't know

3 0

3 years ago

Solve using elimination. 9x − 9y = –18 10x − 9y = –13

masha68 [24]

Answer:

y = 5, y = 7

Step-by-step explanation:

5 0

2 years ago

Antoine has a carnival booth at the school fair where students randomly select a ping pong ball from a can. He wants to place 5

nevsk [136]

Answer:

(a) $5n=3n+15$

(b) $n=7.5$

Solution is not viable

Step-by-step explanation:

(a)

Total number of red ping pong balls $=5$

Total number of red ping pong balls $=n$

Now, probability of an event $=\frac{Number of favourable events}{Total number of events}$

Then, theprobability of randomly choosing a blue ping pong ball is

$=\frac{n}{n+5}$

Given that this probability is $=\frac{3}{5}$

Thus, we have that,

$\frac{n}{n+5}= \frac{3}{5}\\ 5n=3(n+5)\\5n=3n+15$

(b)

Solving, the above equation,

$5n=3n+15\\2n=15\\n=7.5$

This solution is not viable as, number of ping pong ball must be an integer and not a decimal number.

7 0

3 years ago

Let n represent the number of hours worked and f(n) represent the gross pay. Write an equation for f(n) in terms of n. Then, eva

Citrus2011 [14]

Use the formula for 10 to figure out the rest

3 0

3 years ago

Select the best answer for the question

Klio2033 [76]

Answer:

C. $\left[\begin{array}{ccc}-24&0&-3\\8&-48&56\\25&-6&10\end{array}\right]$

Step-by-step explanation:

The given matrices are;

$F=\left[\begin{array}{cc}-2&0\\0&8\\2&1\end{array}\right]$

and

$C=\left[\begin{array}{ccc}12&0&\frac{3}{2}\\1&-6&7\end{array}\right]$

$FC=\left[\begin{array}{cc}-2&0\\0&8\\2&1\end{array}\right]\left[\begin{array}{ccc}12&0&\frac{3}{2}\\1&-6&7\end{array}\right]$

$FC=\left[\begin{array}{ccc}12(-2)+0(1)&0(-2)+-6(0)&\frac{3}{2}(-2)+7(0)\\12(0)+8(1)&0(0)+8(-6)&0(\frac{3}{2})+8(7)\\2(12)+1(1)&2(0)+1(-6)&2(\frac{3}{2})+1(7)\end{array}\right]$

This simplifies to;

$FC=\left[\begin{array}{ccc}-24&0&-3\\8&-48&56\\25&-6&10\end{array}\right]$

The correct answer is C

5 0

2 years ago