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mrs_skeptik [129]
3 years ago
13

2. Estimate the sum of $4.28, $21.35, and

Mathematics
1 answer:
Over [174]3 years ago
7 0

Answer:

$40.40

Step-by-step explanation:

1. Round each decimal to the nearest tenth. Keep in mind that the sum is the answer to an addition problem.

$4.28 = $4.30

$21.35 = $21.40

$14.65 = $14.70

2. Now, all we have to do is add up the three decimals to find the answer.

$21.40 + $14.70 + $4.30 = $40.40

Conclusion: Your answer is $40.40

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Y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?
Ksju [112]
In a proportional relationship, x and y will increase at the same rate. In order to find the value of x when y=4, we first have to find the ratio of x:y. We can do this by creating a fraction. After we know the ratio, simply replace the y value with 4 and solve for x. Here's the math:

y=15 when x=3       given values

y/x = 15/3 = 5          ratio of y to x

y=5x                        equation representing the proportional relationship 

4=5x                        replace y with 4

4/5=x                       divide both sides by 5 to isolate x

Answer: The value of x=4/5 when y=4.

Hope this helps!


6 0
3 years ago
Jarred sells DVDs. His inventory shows that he has a total of 3,500 DVDs. He has 2,342 more contemporary titles than classic tit
Mamont248 [21]
Here, x - y = 2342
x = 2342 + y

Substitute this value into first equation, 
2342 + y + y = 3500
2y = 3500 - 2342
y = 1158/2
y = 579

So, x = 2342 + 579 = 2921

In short, Your Answer would be 2921 contemporary titles

Hope this helps!
3 0
3 years ago
Read 2 more answers
On the highway, a car can travel 21 miles per gallon of gas. If the car travels for 4 hours on the highway at a rate of 65 miles
lora16 [44]

Answer:

12.4 gallons

Step-by-step explanation:

65 mph x 4 hours means the car went 260 miles. Divide by 21 to get the number of gallons. 12.4 gallons.

6 0
2 years ago
Read 2 more answers
Find q. Write your answer in simplest radical form.
yawa3891 [41]

Answer:

q=90 units.

Step-by-step explanation:

5 0
3 years ago
What is the image of (0,7) after a reflection over the x-axis
Evgesh-ka [11]

Answer:

(0, - 7 )

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y ) → (x, - y ), thus

(0, 7 ) → (0, - 7 )

7 0
3 years ago
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