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Fed [463]
3 years ago
14

Joy mixed baking soda and vinegar for her volcano model. she saw lots of bubbling and fizzing. what can she infer happened?

Mathematics
1 answer:
Klio2033 [76]3 years ago
4 0
D a chemical change.
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Ericka is also in Mr. Whittaker’s science class and she recorded the variation in water level at a different part of the river.
Anton [14]

Answer:

first one is 2.2mm/year and second is 6.2years and -2.2mm/year

Step-by-step explanation:

Just trust me im right

3 0
3 years ago
How can u divide 5 pizza with 8 kids
olganol [36]
I don't know look you.
7 0
3 years ago
Find the perimeters of the following shapes
Marta_Voda [28]

Answer:

a.) 26.2

Step-by-step explanation:

b.)13.8

hope this helps

6 0
3 years ago
Read 2 more answers
If f={(-1,-3), (1,1),(2,3),(4,6)} and g={(-1,-1),(1,7),(4,3)} what is (f+g)(4)?
svet-max [94.6K]

Answer:

(f + g)(4) = 9

Step-by-step explanation:

We have that:

f = {(-1,-3), (1,1),(2,3),(4,6)}

this means that:

f(-1) = -3

f(1) = 1

f(2) = 3

f(4) = 6

and we also know that:

g = {(-1,-1),(1,7),(4,3)}

hich means that:

g(-1) = -1

g(1) = 7

g(4) = 3

Now we want to find:

(f + g)(4)

For the general case of two functions f(x) and g(x)

(f + g)(x) = f(x) + g(x)

Then:

(f + g)(4) = f(4) + g(4)

and we know both of these values, so we can just replace them:

(f + g)(4) = f(4) + g(4) = 6 + 3 = 9

Then we get:

(f + g)(4) = 9

5 0
3 years ago
Kate's Cupcakes sells cupcakes in boxes of 4. Depending on the type of cupcake, a box can cost at most $20. Write and solve an i
Maurinko [17]

Answer:

4x <= 20

x <= 5

A single cupcake can cost at most $5.

Step-by-step explanation:

Let the price of a single cupcake be x.

We know that there are 4 cupcakes in a box, so 4x is equal to the price of 4 cupcakes and hence the price of a box.

The question tells us that a box costs at most $20, so we can write this as an inequality:

4x <= 20

Divide both sides by 4 to isolate and solve for x:

x <= 5

x is less than or equal to 5, which can be interpreted as a cupcake costing at most $5.

3 0
3 years ago
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