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3 years ago

12

can someone explain how this example answer is the answer, this is about mixed to improper fractions and i dont know how to do t

his so can you help?

1 answer:

OleMash [197]3 years ago

5 0

You multiply the whole number by the denominator (2x4) then add the numerator (2x4)= 8 then plus 1 so 8+1 is 9 and that's how you get your answer 9/4

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Solve for x. Round answer to nearest tenth.

Ostrovityanka [42]

Answer:

I got 37.5 as my answer

Step-by-step explanation:

create your proportions by making the fractions 16/20=30/x (you can use this shortcut because the lines are parallel)

then cross multiply to get 16x=600

divide by 16 and x=37.5

7 0

3 years ago

If p: All birds fly. What is ~ p?

Vika [28.1K]

C. not all birds fly.
When using _:_, you are contrasting two things so, you are putting a argument to go against the other side.
Not all birds can fly is going against All birds can fly.

Hope this helps. :)

3 0

4 years ago

Find all points on the curve that have the given slope.x = 2cost, y= 8sint, slope =-1

tatuchka [14]

Answer:

$t_{1} = 0.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

$t_{2} = 1.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

Step-by-step explanation:

In the case of parametric equations, the slope of the curve is equal to:

$\frac{dy}{dx} = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

Where $\frac{dx}{dt}$ and $\frac{dy}{dt}$ are the first derivatives of $x$ and $y$ regarding $t$ . Let be $x(t) =2\cdot \cos t$ and $y(t) = 8\cdot \sin t$ , their first derivatives are found:

$\frac{dx}{dt} = -2\cdot \sin t$ and $\frac{dy}{dt} = 8\cdot \cos t$

Thus, equation for the slope is:

$\frac{dy}{dx} = -\frac{8\cdot \cos t}{2\cdot \sin t}$

$\frac{dy}{dx} = -\frac{4}{\tan t}$

If $\frac{dy}{dx} = -1$ , then:

$-1 = -\frac{4}{\tan t}$

$\tan t = 4$

Tangent is positive at 1st quadrant and is a function with a periodicity of $\pi$ , the set of solutions are:

$t_{1} = 0.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

$t_{2} = 1.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

7 0

3 years ago

Round your answer to the nearest hundredth BC=

UkoKoshka [18]

Answer:

BC = 4.92

Step-by-step explanation:

cos 35° = $\frac{?}{6}$

BC = 6 x cos 35°

BC = 6(.82) = 4.92

5 0

3 years ago

The perimeter of a triangular playground is 120 feet. The ratio of the measures of the sides is 3:5:7. Find the measure of the s

Hunter-Best [27]

24 feet, 40 feet, and 56 feet this is because using the ratio given 3:5:7

you can multiply
3x8=24
5x8=40
7x8=56
This shows that it follows the ratio lastly you need to make sure the numbers add up to 120
24+40+56=120
So A is your answer can I be marked brainiest please

5 0

3 years ago