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Lunna [17]
2 years ago
9

Help! 10 points available

Mathematics
2 answers:
miss Akunina [59]2 years ago
8 0

the answer should be c

vlabodo [156]2 years ago
6 0

The correct answer is B, sqrt 2 / 2, which equals 0.70

If you put cos 45* into a trig calculator, you'll get 0.70 as well.

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3 years ago
Read 2 more answers
5x-2y=2 slope intercept form?
Nata [24]

Answer:

y = \frac{5}{2}x-1  

Step-by-step explanation:

Slope-intercept form is represented by the formula y = mx  + b. So, to place the given equation in slope-intercept form, isolate the y on the left side and arrange the terms in that matching order. Remember, whatever you do to one side, do to the other:

5x-2y = 2\\-2y = -5x + 2\\\frac{-2}{-2}y = \frac{-5}{-2} x+\frac{2}{-2} \\y = \frac{5}{2} x-1

So, the slope-intercept form is y = \frac{5}{2}x-1.

6 0
3 years ago
Solve x^2 - 4 = 77.
Gennadij [26K]

Answer:

X = 9 or x = -9

Step-by-step explanation:

We want to solve the quadratic equation

{x}^{2}  - 4 = 77

We shall use the square root method

Let us add 4 to both sides to get:

{x}^{2}  - 4 + 4 = 77 + 4

{x}^{2}  = 81

We take square to get:

x =  \pm \sqrt{81}

x =  \pm9

The solution is x=9 or -9

5 0
2 years ago
A rock band has made souvenir T-shirts to sell at their concert and hopes to bring in at least $140 from the sale of the shirts.
Artist 52 [7]
A = amount of adult shirts sold
c = amount of child shirts sold

140 = 4a + 2c
7 0
3 years ago
2.48 > 2.4 blank 1 > 2.463
Arte-miy333 [17]
2.48>2.4<1>2.463

is the answer
8 0
3 years ago
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