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olga2289 [7]
3 years ago
14

Verify that each equation is an identity. Show Work plzz!!

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

Step-by-step explanation:

sin²x + cos²x = 1 ⇒ cos²x = 1 - sin²x

\frac{cos^2x}{cos^2x} = 1

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How many rational numbers have square roots between 10 and 10.1?​
Ymorist [56]

Answer:

0.1

Step-by-step explanation:

5 0
3 years ago
Find an equation of the line containing the given pair of points (5,2) and (-3,5)
anzhelika [568]
(5,2)(-3,5)
slope = (5 - 2) / (-3 - 5) = -3/8

y = mx + b
slope(m) = -3/8
use either of ur points...(5,2)...x = 5 and y = 2
now we sub and find b, the y int
2 = -3/8(5) + b
2 = - 15/8 + b
2 + 15/8 = b
16/8 + 15/8 = b
31/8 = b

so ur equation is : y = -3/8x + 31/8....or 3x + 8y = 31
3 0
3 years ago
Math question down below
Vinvika [58]
Do 6.5” divided by 5 to find the slope . Then plot each point and
5 0
3 years ago
The graph below shows the number of open blossoms in a nursery and the number of hours after dawn. answer all that apply
uysha [10]

Answer:

The correct option is B.

Step-by-step explanation:

The given equation is

y=20x+3

This equation represent the number of open blossoms in a nursery after x hours.

At initial the number hours is 0.

Substitute x=0 in the given equation.

y=20(0)+3

y=0+3

y=3

The initial value is 3, it means there were three blossoms open at dawn. Option B is correct.

6 0
3 years ago
Melons cost $20 pet Crate, and apples cost $8 per create. an order comes in for a total of 48 crates for $420. what was the numb
Alika [10]

Answer:

The number of melon was 3 and the number of apples was 45.

Step-by-step explanation:

1. Melons cost $20 per crate and apples cost $8 per create. If the total was 48 crates for $420, you can make the following system of equations, where x is the number of melons and y is the number of apples:

\left \{ {{x+y=48} \atop {20x+8y=420}} \right.

2. By applying the Method of substitution, you can solve for y in the first equation and substitute it into the second one to find x. Then, you can substitute the value of x into the first equation to find y:

y=48-x

20x+8(48-x)=420\\20x+384-8x=420\\12x=36\\x=3

3+y=48\\y=45


4 0
4 years ago
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