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Ber [7]
3 years ago
10

Does anyone know the answer for this?​

Mathematics
1 answer:
Sladkaya [172]3 years ago
6 0
The slope becomes steeper
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There are 90 students in Grade 5, and 10% of them were absent today.In Grade 6, 15% of the 80 students were absent today.What wa
podryga [215]

Answer:

21 students

Step-by-step explanation:

90 x .10 = 9

80 x .15 = 12

9 + 12 = 21 students

3 0
3 years ago
Please show all steps for answering this problem!!!
Anarel [89]
(4x^5-15x^3-10x^2)-(2x^5-5x^3-2x^2)

So, the first thing we will do is add like terms. But before that, lets get rid of both parenthesis. We'll just get rid of the first pair, and for the second pair, we will multiple everything in the second parenthesis by -1

4x^5-15x^3-10x^2-2x^5+5x^3+2x^2

Now, we will add like terms.

2x^5-10x^3-8x^2

Now, there's a common factor that all of these terms share; it's 2x^2. 2x^5 can be divided by 2, as well as -10x^3 and -8x^2 (these are the coefficients, number found in front of the variable.) So, we'll distribute 2

2x^2(x^3-5x-4)    (we take the 2x^2 out by dividing all terms by 2x^2)

So, our answer would be

2x^2
8 0
4 years ago
How is 0.136¯¯¯¯ written as a fraction in simplest form?
drek231 [11]

Answer:

\frac{3}{22}

Step-by-step explanation:

the bar above 36 means that the digits 36 are being repeated

we require 2 equations with the repeating digits placed after the decimal point.

let x = 0.13636.. ( multiply both sides by 10 and 1000 )

10x = 1.3636... (1)

1000x = 136.3636... (2)

subtract (1) from (2) thus eliminating the repeating digits

990x = 135 ( divide both sides by 990 )

x = \frac{135}{990} = \frac{3}{22} ← in simplest form

5 0
2 years ago
2cos^2x+cosx-1=0<br> Find the degree solutions
Lapatulllka [165]
2cos²x+cos x-1=0

cos x=t

2t²+t-1=0

t=[-1⁺₋√(-1+8)]/2=(-1⁺₋3)/4
We have two possible set solutions:
First set solutions.
t₁=(-1-3)/2=-4/4=-1   
cos x=-1  ⇒x=cos⁻¹ (-1)=π +2kπ    or     180º+360ºk    (k=(...-2,-1,0,1,2...)

Second set solutions:
t₂=(-1+3)/4=2/4=1/2

cos x=1/2  ⇒ x=cos⁻¹ 1/2=π/3+2kπ   U   5π/3+ 2kπ   or
60º+360ºK  U 300º+360ºK        (k=...-2,-1,0,1,2,...)

solutions: first set solutions U second set solutions:

Answer in radians : π +2kπ U π/3+2kπ U 5π/3+ 2kπ   (k=...-1,0,1,...)
Answer is degrees: 180º+360ºk U 60º+360ºK  U 300º+360ºK        (k=...-2,-1,0,1,2,...)
4 0
3 years ago
If the least common denominator is 24, then the fractions 5/8 and 3/12 would be
Lapatulllka [165]

Answer: 15/24 + 6/24 = 21/24

Step-by-step explanation

when you put the new denominator (which is 28 on both fractions) you have to multiply the numerator by how many times it takes the denominator. example. 5/8 8 can go into 24, 3 times so u multiply

5 by 3 same with the other side just u multiply 3 by 2

5 0
4 years ago
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