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2 years ago

3 times the sum of a number and 3

Mathematics

1 answer:

zimovet [89]2 years ago

8 0

Answer:

3(x +3)

Step-by-step explanation:

Let x be the unknown number

We need to find the sum first

x+3

Then multiply 3 by the sum

3(x +3)

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ms. Omar runs the school tennis club. She has a bin of tennis balls and rackets. For every 5 tennis balls in the bin, there are

anygoal [31]

Answer:

see the explanation

Step-by-step explanation:

Let

x ----> number of tennis balls

y ----> number of tennis rackets

we know that

To find out the ratio of tennis balls to tennis rackets, divide the number of tennis ball by the number of tennis rackets

In this problem we have

$\frac{x}{y}=\frac{5}{3}$

see the model in the attached figure N 1

$y=\frac{3}{5}x$

$y=0.60x$

This is the equation of a linear direct variation

The relationship between the variables x and y is proportional

see the model in the attached figure N 2

4 0

2 years ago

5<br> ogarithmic equation in exponential form:<br> log(5k + 4) = 8r

alexandr1967 [171]

Given:

$\log (5k+4)=8r$

To find:

The exponential form of given equation.

Solution:

We have,

$\log (5k+4)=8r$

According to the property of the logarithm,

$\log_ax=y\Rightarrow x=a^y$

Using the above property of the logarithm, we get

$5k+4=10^{8r}$

Therefore, the required equation in exponential form is $5k+4=10^{8r}$ .

7 0

2 years ago

two kids at a summer camp, Edward and Heather, are competing in a potato sack race. Edward is younger, so he is given a head sta

torisob [31]

Heather will have to hop 30 meters which will take her 10 seconds

7 0

3 years ago

Read 2 more answers

Which decimal has the greater value: 8,516.50 or 8,516.90?

lianna [129]

8,516.90 has a greater value than 8,516.50 because .90 is closer to 1.00 than .50 is
i hope this helps

6 0

3 years ago

Read 2 more answers

Find x <br> Plz help me !!!

mel-nik [20]

Answer:

$\Huge\boxed{x=33.2}$

Step-by-step explanation:

Hello there!

We can solve for x using law of sines

As we can see in the image a side length divided by sin ( its opposite angle) = a different side length divided by sin ( its opposite angle)

So we can use this equation to solve for x

$\frac{21}{sin(35)} =\frac{x}{sin(65)}$

Our objective is to isolate the variable using inverse operations so to get rid of sin (65) we multiply each side by sin (65)

$\frac{x}{sin(65)} sin(65)=x\\\\\frac{21}{sin(35)} sin(65)=\frac{21sin(65)}{sin(35)}$

we're left with

$x=\frac{21sin(65)}{sin(35)}\\x=33.18208755$

assuming we have to round the answer would be 33.18 or 33.2

7 0

2 years ago