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Amiraneli [1.4K]
3 years ago
5

NEED THIS ASAP BEACUSE THIS IS A MATH QUIZ

Mathematics
2 answers:
yulyashka [42]3 years ago
4 0

Answer:

3

Step-by-step explanation:

15-2x=9

or,-2x=9-15

or, x=-6/-2

x=3

Varvara68 [4.7K]3 years ago
3 0

Answer:

Bob has 15 books and Joey has 2x books. If you subrtact Joeys books from bobs how many will there be. there will be 9. becase if you take 15 and cancle it out then you do that to the other side then there is -6. and -2x= -6 then would equal 3.

Step-by-step explanation:

15 - 2x = 9

-15.        -15

-2x= -6

/-2.   /-2

x=3

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The two amino acids animated above ​
andrew-mc [135]

Answer:

its peptide bond and water

Step-by-step explanation:

Two amino acids animated above are joined together by a PEPTIDE BOND and a form of a molecule of WATER in the process. Hope this helps Mate :)

3 0
3 years ago
Read 2 more answers
For the reaction 2Fe + O2 → 2FeO, how many grams of iron oxide are produced from 42.4 mol of iron?
Butoxors [25]

In the balanced reaction

2 Fe + O₂   →   2 FeO

2 moles of iron (Fe) react with 1 mole of molecular oxygen (O₂) to produce 2 moles of iron oxide (FeO). The ratio of Fe to FeO is 1-to-1, so if one starts with 42.4 mol of Fe, one will end up with the same amount of FeO, 42.4 mol.

Look up the molar mass of Fe and O:

• Fe = 55.845 g/mol

• O = 15.999 g/mol

Then the molar mass of FeO is approximately 71.835 g/mol, and so the mass of 42.4 mol of FeO is

(42.4 mol) × (71.835 g/mol) ≈ 3050 g

8 0
2 years ago
Graph the system of equations. {4x+4y=16 x+6y=−6 Use the Line tool to graph the lines.
tatiyna

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

4x+4y=16 -----> equation A

x+6y=-6 -----> equation B

we know that

The solution of the system of equations is the intersection point both graphs

In this problem

The intersection point is (6,-2)

therefore

The solution is the point (6,-2)

using a graphing tool

see the attached figure

5 0
3 years ago
What type of function is this equation?
dexar [7]

Answer:

Linear

Step-by-step explanation:

Linear functions are those whose graph is a straight line. A linear function has the following form: f(x) - mx +b

Hope this helps! :)

8 0
2 years ago
A customer enters a store and purchases a pair of slippers for 5 dollars. He pays with a 20 dollar bill. The merchant asks the g
Finger [1]

Answer:

he loses 5 dollars

Step-by-step explanation:

5+20=25

25-$20=5

5 0
3 years ago
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