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kompoz [17]
3 years ago
8

2. How many students are there in Katy's study? Write your answer in the space below.

Mathematics
2 answers:
RoseWind [281]3 years ago
7 0

Answer:

39 Students

Step-by-step explanation:

just olya [345]3 years ago
3 0

Answer:

there are 38 students

Step-by-step explanation:

9+10=19  

19+7= 26

26+18=38

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What is the factor for 30n-40
nikitadnepr [17]
Factor: 
<span>30n - 40 = 10(3n - 4)

hope it helps</span>
7 0
3 years ago
If a cross section of the paperweight is cut perpendicular to the base but does not pass through the top vertex, which shape des
Montano1993 [528]
Rectangle shape paper weight
4 0
3 years ago
The following polynomial can be factored using the techniques of this lesson x^2-18
Papessa [141]

Answer:

(x+3\sqrt{2})(x-3\sqrt{2})

Step-by-step explanation:

The given expression is x^2-18.

The technique that can be used to factor this polynomial is the difference of two squares.

We rewrite the two expressions as;

x^2-(\sqrt{18})^2

Recall that;

a^2-b^2=(a+b)(a-b)

x^2-(\sqrt{18})^2=(x+\sqrt{18})(x-\sqrt{18})

x^2-(\sqrt{18})^2=(x+3\sqrt{2})(x-3\sqrt{2})

8 0
3 years ago
Read 2 more answers
Y = –5x + 30<br> x = 10<br> What is the solution to the system of equations?
PtichkaEL [24]

Answer:

x=10, y = -20

Step-by-step explanation:

y = –5x + 30

x = 10

Substitute the second equation into the first

y = –5*10 + 30

y = -50 +30

y = -20

x=10, y = -20

8 0
3 years ago
21 is what percent of 40
-Dominant- [34]
To solve for this, set up a proportion.
21/40 = x/100.
Cross multiply the fraction's numerators with the denominators; 
21 x 100, 40 and x.
2100/40x.
Divide both numbers by 40 to get x.
2100/40 = 52.5
21 is 52.5% of 40.
I hope this helps!
5 0
3 years ago
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