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Maslowich
2 years ago
9

Please help me quickly

Mathematics
1 answer:
DaniilM [7]2 years ago
5 0

Answer:

0.4

Step-by-step explanation:

Find square root of 12 and 15

12=3.46 rounded to 3.5

15=3.87 rounded to 3.9

0.9-0.5=0.4

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Jane, Andrea, and Maria pick apples. Andrea pics three times as many pounds as Maria. Jane picks two times as many pounds as And
denpristay [2]
<span>Let x=apples that Andre picks
Then x/3=apples that Maria picks
And 2x=apples that Jane picks 
So, 
x +(x/3)+2x=840 multiply each term by 3</span>
3 0
3 years ago
What is 42.5% of 200?
Diano4ka-milaya [45]
The answer would be 85, here's why
200/x=100/42.5
(200/x)*x=(100/42.5)*x      
200=2.3529411764706*x  
200/2.3529411764706=x 
85=x 
x=85
6 0
3 years ago
What two number multiplied equal 12 but also added together equal -7
FromTheMoon [43]
A) x * y = 12
B) x + y = -7
A) x = 12 / y
Substitute this into B
B) 12/y + y = -7
multiplying both sides by "y"
12 + y^2 = -7y
y^2 + 7y + 12 = 0
y = -4
and from equation B we calculate x as -3



7 0
3 years ago
I need help on this aswell
Katena32 [7]

Answer:

Graph C

Step-by-step explanation:

Hi there!

The given linear equations are organized in slope-intercept form: y=mx+b where <em>m</em> is the slope of the line and <em>b</em> is the y-intercept, or the value of y when the line crosses the y-axis.

y = 2x + 4

Here, the <em>b</em> value is 4. Therefore, the y-intercept of this line is 4.

y = -3x - 2

Here, the <em>b</em> value is -2. Therefore, the y-intercept of this line is -2.

To identify the graph that models these equations, we just have to look for the graph where the lines cross the y-axis at 4 and -2.

The only graph that does this is graph C.

I hope this helps!

8 0
2 years ago
How would you write this equation in terms of sin and cos as well as simplify it from there?
ziro4ka [17]
Try this option:
(1+ \frac{cosx}{sinx})(1- \frac{cosx}{sinx})- \frac{1}{sin^2x}= \frac{sin^2x-cos^2x}{sin^2x}- \frac{1}{sin^2x}=
= \frac{sin^2x-cos^2x-sin^2x-cos^2x}{sin^2x}=- \frac{2cos^2x}{sin^2x}.
or -2ctg²x
8 0
3 years ago
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