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2 years ago

Mrs.Dawson spent 28 dollars for 8 notebooks

Mathematics

1 answer:

Ksju [112]2 years ago

7 0

Answer:

I need more info but if your wondering how much each notebook cost the answer is

Step-by-step explanation:

So first we have to divide 28/8 beacuse thats how many over how much.
When we do it it becomes 3.5. Now this is our number but we must add a zero to the end, so now it $3.50. $3.50 for each notebook!

Hope this helps you, :3

Please consiter <3 me it helps me out a lot!

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The function f is defined by f(x)=2.1x−1.7. Use this formula to find the following values of f. f(x+2)

Yuki888 [10]

The value of $f(x+2)=2.1x+2.5$

Step-by-step explanation:

Given: The function $f(x)=2.1x-1.7$

Using this formula, we need to find the value of $f(x+2)$

Hence, we need to substitute $x$ by $x+2$ to find the value of $f(x+2)$

$f(x+2)=2.1(x+2)-1.7$

Multiplying the term $(x+2)$ by $2.1$ , we get,

$f(x+2)=2.1x+4.2-1.7$

Adding the constant term,

$f(x+2)=2.1x+2.5$

Thus, the value of $f(x+2)$ is $f(x+2)=2.1x+2.5$

8 0

3 years ago

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Phoenix [80]

Answer:

-4 + -2 = -6

Step-by-step explanation:

5 0

3 years ago

Find the sum of each set of numbers, as well as the size n of each set of numbers (n = number of numbers in the set). Use these

guapka [62]

We have to add numbers without a calculator.

1) 25, 35, 19, 31

We can group them by the last digit, so they are easy to add:

25 + 35 = 20 + 30 + 5 +5 = 50 + 10 = 60

19 + 31 = 10 + 30 + 9 +1 = 40 + 10 = 50

Then, 60 + 50 = 110

numbers in the set n = 4

Sum = 110

2) 101, 73, 49, 27, 24, 36

We can group them again by the last digit (adding 10, like the previous example).

We can substract the last digit from one number and add it to the other one. The result will be the same, but they will become easier to add.

101 + 49 = 100+50 = 150

73 + 27 = 70 + 30 = 100

24 + 36 = 20 + 40 = 60

150 + 100 + 60 = 250 + 60 = 310

numbers in the set n = 6

Sum = 310

3) 25, 25, 25, 30, 30, 30, 32, 32, 32

In this case we have 3 times the same numbers, so we can add the three different numbers and then multiply the total by 3.

We can use the properties of the multiplication to simplify the product (we will use the distributive property)

25 + 30 + 32 = 27 + 30 + 30 = 87

87 * 3 = 80*3 + 7*3 = 240 + 21 = 261

numbers in the set n = 9

Sum = 261

8 0

1 year ago

A large container holds 8 gallons of water. After 56 minutes the container only has 1 gallon of water left. At what rate is the

Korvikt [17]

Answer:

The rate at which water leaking is $\frac{1}{8}$ gal/min.

Step-by-step explanation:

Given:

A large container holds 8 gallons of water.

After 56 minutes the container only has 1 gallon of water left.

Now, to find at what rate is the water leaking.

So, water leaked from the container = 8 gallons - 1 gallon = 7 gallons.

Time taken for leakage = 56 minutes.

$\frac{Gallons\ of\ water\ leaked}{Time\ taken\ for\ leakage}$

$=\frac{7 gallons}{56 minutes}$

$=\frac{1 gallon}{8 minutes}$

The rate = $\frac{1}{8}$ gal/min.

Therefore, the rate at which water is leaking is $\frac{1}{8}$ gal/min.

4 0

3 years ago

2/8=__x1/8. i need help plssssssssssss

inna [77]

Answer:

Step-by-step explanation:

3 0

2 years ago