1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stolb23 [73]
3 years ago
11

y is directly proportional to x. When y = 30, x = 6 a) Work out an equation connecting y and x. b) Work out the value of y when

x = 12.​
Mathematics
1 answer:
erica [24]3 years ago
5 0
Answer:
y=5x (your equation)

y=60 (your answer)

Step by step explanation:
You are given two numbers, 6 and 30. Since 6 goes into 30, 5 times, then y(which is equal to 30) is equal to x(which is equal to 6) multiplied by 5, so you get your equation,

Y=5X

then you have to solve for y, so just substitute

Y=5(12)

And simplify

Y=60

And there’s your answer
You might be interested in
The square of the hypotenuse of a right triangle is 625. Which could be the side lengths explain
muminat

Answer:

I think it's D, sorry if i'm wrong but let me know if I'm right!

Step-by-step explanation:

5 0
3 years ago
George had $6,000 in a savings account earning simple interest at a rate of 5% per year. At the end of the year, George paid 25%
Readme [11.4K]

Answer:

<em>$225</em>

<em></em>

Step-by-step explanation:

Given that:

Principal = $6,000

Interest rate = 5%

Time = 1 year

Taxes paid = 25% on the interest earned

To find:

Money earned after paying taxes ?

Solution:

First of all, let us calculate the total interest earned:

Formula for Simple Interest is given as:

SI =\dfrac{PRT}{100}

Where P is the principal

R is the rate of interest

T is the time taken

Putting the given values:

SI =\dfrac{6000 \times 5\times 1}{100} =\$300

Now, it is given that 25% of the interest earned is given as taxes.

Taxes paid = 25% of $300

\Rightarrow \dfrac{25}{100} \times 300 =\$75

Therefore, the money earned = Interest earned - Taxes paid

The money earned = $300 - $75 = <em>$225</em>

8 0
3 years ago
Solve 9^x + 4 = 11 for x using the change of base formula log base b of y equals log y over log b.
Sauron [17]

Answer:

If you meant 9^x+4=11, then the answer is approximately 0.866.

If you meant 9^{x+4}=11, then the answer is approximately -2.909 which looks like what you meant based on the choices.

Step-by-step explanation:

9^x+4=11

First step is to get the exponential part by itself. The part that has the variable exponent which is the 9^x term.

To do this we need to subtract 4 on both sides:

9^x=11-4

Simplify:

9^x=7

The equivalent logarithmic form is:

\log_9(7)=x

I always say to myself the logarithm is the exponent that is how I know what to put opposite the side containing the log.

Anyways if you don't have options for computing \log_b(a) in your calculator you need to use the change of base formula.

\frac{\log(7)}{\log(9)}=x

So x \approx 0.8856

I don't see this as a choice so maybe you actually meant the following equation:

9^{x+4}=11

Let's see if this is the correct interpretation.

So the exponential part is already isolated.

So we just need to put in the equivalent logarithmic form:

\log_9(11)=x+4

Now we subtract 4 on both sides:

\log_9(11)-4=x

Again if you don't have the option for computing \log_b(a) in your calculator, you will have to use the change of base formula:

\frac{\log(11)}{\log(9)}-4=x

x \approx -2.909

6 0
3 years ago
If Bill was traveling v mi/h, how would you represent Daemon's speed in mi/h if he was traveling 45 mi/h faster?
VikaD [51]

The sum of two variables having the same units is given by adding the magnitudes of the quantities and expressing the outcome in the units of the quantities

Daemon's speed is (v + 45) mi/h

The reason the above value for Daemon's speed is correct is as follows:

The known parameters are;

The speed with which Bill was travelling = v mi/h

The speed with which Daemon was travelling = 45 mi/h faster than Bill

Method:

By dimensional analysis, we note that the given quantities have the same units, and therefore, they represent the same quantity of speed

To find Daemon's speed, the amount by which his speed is more than that of Bill's speed is added to the given amount of Bill's speed as follows;

Solution:

Daemon's speed = v mi/h + 45 mi/h = (v + 45) mi/h

Learn more about variable addition here:

brainly.com/question/22965573

brainly.com/question/242905

5 0
3 years ago
Adam wanted to play his video games. His mother told him that he needed to finish his homework, clean out the dishwasher, and cl
Deffense [45]

Answer:

148 minutes = 2h 28 min

Step-by-step explanation:

48min+(25+75mins)=48+100=148

5 0
2 years ago
Other questions:
  • A silent auction was held for a quilt donated for charity. Fifteen bids that were drawn randomly are listed here. What percentil
    15·2 answers
  • The sum of three consecutive integers is 108. Which equation would be used to solve this word problem? (HINT: The equation has b
    13·1 answer
  • Can anyone answer these questions? Look at picture
    5·1 answer
  • What is the slope of this question
    13·1 answer
  • Margo is picking up 600 -ohm resistors for a physics project . (Ohms are the units used to measure circuit resistance.) The pack
    10·1 answer
  • How to i find the lowest terms of a ratio 12 minutes to 3 hrs ?​
    14·2 answers
  • I need help pls ! i need it by 11:59 pls help
    9·1 answer
  • -9 x 2 1/2 What is the value of the expression
    9·1 answer
  • What is -40+7r=-5(8+5r)
    10·1 answer
  • If R(x) and S(x) are inverse functions, which statement must be true?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!