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3 years ago

5

Jody has 2 red marbles, 5 blue marbles, and 9 yellow marbles. What is the ratio of red marbles to blue marbles? A. 16:2 B. 2:16

C. 5:2 D. 2:5

2 answers:

vesna_86 [32]3 years ago

6 0

Answer:

D

Step-by-step explanation:

mote1985 [20]3 years ago

5 0

Step-by-step explanation:

2/16=1/8:5/16=16/40=4/10=2:5

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Kelly wants to know the actual value of a house that she wants to buy. What should she do?

Ghella [55]

Kelly should ask the realtor.

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3 years ago

Read 2 more answers

Given y = log3(x + 4), what is the range?

lora16 [44]

Answer:

The range is all real numbers.

The domain is all reals numbers that are greater than -4.

Step-by-step explanation:

$y=\log_3(x+4)$ only exists when $x+4$ is positive.

You can take the log of a negative or 0 number.

So $x+4>0$ implies $x>-4$ . (I just subtract 4 on both sides.)

So the domain is x>-4. You should see this also when you graph the curve that the curve only exist to the right of -4.

Now the range. The range is where the curve exist for the y-values.

The equivalent exponent form of $y=\log_3(x+4)$ is $3^{y}=x+4$

We can solve this for x be subtract 4 on both sides:

$x=3^y-4$

Now here y can be anything; there are no restrictions on the exponent.

Also if you look at the graph of $y=\log_3(x+4)$ you should see every y getting hit by the curve (look down to up; use the y-axis as a guide).

Let's think about the inverse I found above a little more (I'm going to swap x and y).

$y=3^x-4$ .

If we look at the domain and range of this we can just swap it to get the domain and range of $y=\log_3(x+4)$ .

$y=3^x-4$ is an exponential function of 3^x that has been moved down 4 units.

The range since it has been moved down 4 units is $(-4,\infty)$ .

The domain of an exponential function is all real numbers. There are no restrictions on what you can plug in for x.

So swapping these to find the domain and range of $y=\log_3(x+4)$ :

Domain: $(-4,\infty)$

Range : $(-\infty,\infty)$

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3 years ago

In winter a sporting goods store sells 5 times as many in winter then summer the store sells 132 in summer how many snowboards h

garik1379 [7]

Answer:132 x 5 =660

Step-by-step explanation:

8 0

3 years ago

The sum of 8 and y is 5. what is y

marshall27 [118]

Answer:

y = -3

Step-by-step explanation:

As per the condition given

8 + y = 5

y = 5 - 8 = -3

7 0

2 years ago

Sophia babysat for 3 5/12 hours on Friday. She babysat for 2 5/6 hours on Saturday. For the following statements, estimate how l

Shalnov [3]

Answer:

the answer is c for Friday and 6 3/12 hours for them both combined

Step-by-step explanation:

because 3 5/12 is closest to 3 1/2=3 6/12

for fir day and Saturday day combined it would be 6 3/12

because 5/6 is 10/12 and 5/12 + 10/12 is 15/12 which is also 1 3/12

so add 3 +2=5 and then add the fraction 1 3/12 which would be 6 3/12 hours

4 0

3 years ago