All categories

3 years ago

Which ratio has a unit rate of 4 choose all that apply

Mathematics

1 answer:

Murrr4er [49]3 years ago

8 0

Answer:

Where are the answer choices my dude

Step-by-step explanation:

You might be interested in

The original price of a jacket is $70. The sale price is 30% off the original price. What is the amount off the original price (

Mama L [17]

Answer:

$49

Step-by-step explanation:

$70 - 30% = $49

3 0

3 years ago

Read 2 more answers

If x is a positive acute angle and cos x = 3/5, find the value of sinx.

Dima020 [189]

X is a positive acute angle. That means x is located in the first quadrant and has positive value in sin, cos, tan.

The formula of trigonometry ratio
cos x = $\dfrac{\text{adjacent}}{\text{hypotenuse}}$
sin x = $\dfrac{\text{opposite}}{\text{hypotenuse}}$

From the formula of cosine
cos x = $\dfrac{3}{5}$
$\dfrac{\text{adjacent}}{\text{hypotenuse}}= \dfrac{3}{5}$
from the formula above, adjacent side is 3 units, and hypotenuse is 5 units

Draw a right triangle to illustrate the location of the sides. See image attached.

To find the ratio of sine, we need to find the length of opposite side using pythagorean theorem
3² + (opposite)² = 5²
9 + (opposite)² = 25
(opposite)² = 25 - 9
(opposite)² = 16
opposite = 4
The length of opposite side is 4 units

Find sin x
sin x = $\dfrac{\text{opposite}}{\text{hypotenuse}}$
sin x = $\dfrac{4}{5}$

3 0

2 years ago

A regular pentagon is inscribed in ur let of radius 8cm. find the length of one side of the polygon

Sergio039 [100]

9514 1404 393

Answer:

9.404 cm

Step-by-step explanation:

A regular polygon with n sides inscribed in a circle of radius r will have a side length given by ...

s = 2r·sin(180°/n)

For r = 8 and n = 5, this gives a side length of ...

s = 2·8·sin(180°/5) = 16·sin(36°) ≈ 9.404 . . . cm

4 0

2 years ago

I am greater than 13.I am less than 20.I have 6 ones.

Reptile [31]

Answer:

Step-by-step explanation:

grater than 13 less than 20

14,15,16,17,18,19

6 ones

7 0

3 years ago

Solve the following word problem by using a system of equations.

coldgirl [10]

For this problem, we can use systems of equations. I will use the variables <em>x </em> (for ice-cream) and <em>y</em> (for soda). We get the system:

2.25x+0.75y=30.00
x+y=18

Putting the second equation in terms of y, we get that y=-x+18. We can substitute this into our first equation.

2.25x+0.75y=30.00
becomes
2.25x+0.75(-x+18)=30

Solving for x, we get that x=11. This satisfies answer B.

However, if you want to check to see if this is correct, you could find y by plugging in your value of x into the first equation, then check to see if your found values satisfy BOTH equations.

2.25(11)+0.75y=30
24.75+0.75y=30
0.75y=5.25
y=7

Then we plug this into both equations to see if they are true.

2.25(11)+0.75(7)=30
24.75+5.25=30
30=30 (This is true)

x+y=18
11+7=18
18=18 (This is true).

Both equations are true, so the value for x and y are correct. We see that only answer B is supported through analyzing your work.

:)

4 0

3 years ago