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3 years ago

Given that y = 9x+4 -3(7 + x ) when x=3.2

Mathematics

1 answer:

djyliett [7]3 years ago

4 0

9(3.2)+4-3(7+3.2)=2.2

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Describe and correct the error in writing an equation of the line with a slope of 2 and a y-intercept of 7.

olganol [36]

Answer:

The mistake they made was they switched the slope and y-intercept.

The correct answer is y=2x+7 because when we write an equation in slope intercept form (y=mx+b) you replace m with the slope and b with the y-intercept.

Hope this helps! <3

8 0

2 years ago

On Friday, 20 dogs attended doggy daycare. On Saturday, 26 dogs attended. What is the percent of change?

Sati [7]

Answer:

Step-by-step explanation:

%change=100(final-initial)/(initial)

%change=100(26-20)/20

%change=30%

Since this is positive the number of dogs increased by 30%

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3 years ago

Frorn first to last, when did the presidents serve?

navik [9.2K]

Step-by-step explanation:

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3 years ago

A water tank is being filled by pumps at a constant rate. The volume of water in the tank V, in gallons, is given by the equatio

mamaluj [8]

Answer:

65 gallons per minute

Step-by-step explanation:

The total volume of the tank at any given time is given by the equation:

V(t) = 65t + 280

In order to find the rate of change of volume, we can simply differentiate this equation with respect to time. This will give us the rate of change of the volume or the rate at which water is being pumped into the tank.

Differentiating the above equation we get:

V'(t) = 65

So we can see that the rate at which water is being pumped into the tank is 65 gallons per minute

7 0

3 years ago

In which place is the digit in the number 5,341 that would be changed to form 5,841? How do the values of the two numbers compar

Colt1911 [192]

We want to change the digit in the number 5,341 into 5,841, and to find the difference between the numbers.

Refer to the figure shown below.
The number 3 is in the 3rd place (hundreds) of the number 5,341 as a digit.
It is replaced by 8 to form the number 5,841.

This means that 300 is replaced by 800 because, in the third place, we count by hundreds in the 3rd place.
The difference between 800 and 300 is 500.

Subtraction of 5,341 from 5,841 also yields 500.

Answer:
The digit is in the 3rd place (hundreds).
The difference between the numbers is 500.

3 0

3 years ago