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IRISSAK [1]
4 years ago
10

Cos(75°)cos(15°) find the fraction solution

Mathematics
1 answer:
andrew11 [14]4 years ago
6 0

the answer in decimal form is .25 but in fraction form is 1/4

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Please help <3 Paula is writing short, casual notes for how to find the inverse of a function, f. Those notes are shown below
NARA [144]

Answer:

(3rd listed choice) Paula's notes are incorrect. Step 4a should be "If the result does not define y as a function of x, then f does not have an inverse," and step 4b should be "If the result defines y as a function of x, then f has an inverse."

Step-by-step explanation:

If f(y) = x can be solved for a relation for y that is a function, then f(x) has an inverse. It will be the function defined by y.

6 0
3 years ago
What is 5/9 divided by 1/2 rewritten with an improper fraction
SVEN [57.7K]
It would be 10/9

Use the keep, change, flip rule to solve

5*2=10 which will be in top

And 9*1=9 which will be at the bottom
7 0
3 years ago
Can somebody help it’s due soon and it’s a major test plz help!
katen-ka-za [31]

Answer:

Car A ⇔ 50 mph

Car B ⇔ 60 mph

Car C ⇔ 55 mph

Step-by-step explanation:

The equation of the proportionality is y = m x, where m is the constant of proportionality we can find it by using the initial values os x and y or by the rule of the slope of a line m = \frac{y2-y1}{x2-x1}

Let us find the constant of proportionality of each car

Car A

∵ The line in the figure passes through points (0, 0) and (1, 50)

∴ x1 = 0 and y1 = 0

∴ x2 = 1, y2 = 50

→ By using the rule of the slope above

∵ m = \frac{50-0}{1-0} = \frac{50}{1}

∴ m = 50

∴ The constant of proportionality of car A is 50 mph

Car B

∵ The equation of proportionality is y = m x

∵ From the given table at x = 1, y = 60

→ Substitute them in the equation to find m

∴ 60 = m (1)

∴ 60 = m

∴ m = 60

∴ The constant of proportionality of car B is 60 mph

Car C

∵ The equation is y = 55x

→ Compare it with the form of the equation of the proportionality

∵ y = m x

∴ m = 55

∴ The constant of proportionality of car C is 55 mph

3 0
3 years ago
VWhat is the value of y in the system of equations shown below? 7x-7y=49 13x-16y=34
11Alexandr11 [23.1K]

Answer:

y = 19

Step-by-step explanation:

We will solve the system of equations by the addition method. We will eliminate x and solve for y.

7x - 7y = 49

13x - 16y = 34

Divide both sides of the first equation by 7.

x - y = 7

13x - 16y = 34

Multiply both sides of the first equation by -13.

-13x + 13y = -91

13x - 16y = 34

Add the equations.

-3y = -57

Divide both sides by -3.

y = 19

8 0
3 years ago
gabriella rents bikes for $13 plus $7 per hour. Eduardo paid $27 to rent a bike for how many hours did he rent the bike?
e-lub [12.9K]

He has it for 2 hours

5 0
3 years ago
Read 2 more answers
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