Which fraction has a value that's equal to 7/8

1 answer:

7 0

There's a bunch of them like if you simplify you could get 3/4.I'll give you some more.

Examples:14/16 21/24 28/32 and 35/40.

My brain was getting tired to think...but there's more.

Hope this helps :D

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Carla must ice a german chocolate cake. The diameter of the cake is 6 cm. Use the formula A = 3.14 x r2 to find the area of the

raketka [301]

So area of cake
area=pi times radius^2
diameter=2radius
diameter/2=radius
find radius

diameter=6
6/2=raidus=3

formula is
A=3.14 times 3^2
A=3.14 times 9
A=28.26 cm^2

4 0

3 years ago

Write the given expression as an algebraic expression in x. tan(2 cos^-1(x))

miv72 [106K]

$\bf tan\left[ 2cos^{-1}(x) \right]\implies tan\left[ 2cos^{-1}\left( \frac{x}{1} \right) \right]
\\\\\\
\textit{if we say }cos^{-1}\left( \frac{x}{1} \right)=\theta\textit{ that means }tan\left[ 2cos^{-1}\left( \frac{x}{1} \right) \right]\iff tan(2\theta)\\\\
-----------------------------\\\\
cos^{-1}\left( \frac{x}{1} \right)=\theta\implies cos(\theta)=\cfrac{x}{1}\cfrac{\leftarrow adjacent=a}{\leftarrow hypotenuse=c}\\\\
-----------------------------\\\\
$

$\bf \textit{again, using the pythagorean theorem to get the opposite side}
\\\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-a^2}=b\implies \pm\sqrt{1^2-x^2}=b
\\\\\\
\pm\sqrt{1-x^2}=b\\\\
-----------------------------\\\\
tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\implies tan(2\theta)=\cfrac{2\cdot \frac{\pm\sqrt{1-x^2}}{x}}{1-\left( \frac{\pm\sqrt{1-x^2}}{x} \right)^2}
\\\\\\$

$\bf tan(2\theta)=\cfrac{\frac{\pm2\sqrt{1-x^2}}{x}}{1-\frac{1-x}{x}}\implies 
tan(2\theta)=\cfrac{\frac{\pm2\sqrt{1-x^2}}{x}}{\frac{x-1+x}{x}}
\\\\\\
tan(2\theta)=\cfrac{\pm2\sqrt{1-x^2}}{x}\cdot \cfrac{x}{2x-1}
\implies 
tan(2\theta)=\cfrac{\pm 2\sqrt{1-x^2}}{2x-1}$

6 0

4 years ago

Help pls i'll give brainliest, are they inverses or not explain why or why not

AfilCa [17]

Is that algebra,????????

5 0

3 years ago

Enter the missing numbers in the boxes to complete the table of equivalent ratio's.

fredd [130]

Step-by-step explanation:

Time Distance

2 3

6 9

10 15

12 18

5 0

3 years ago

you invest $80 at a simple annual interest rate of 2.4% how much simple interest would you earn in 1.5 years. what would the mon

photoshop1234 [79]

Answer:

Step-by-step explanation:

The formula for simple interest is Prt = I, where P is the initial investment, r is the interest rate in decimal form, t is the time in years, and I is the interest earned from the multiplication of the 3 previous values.

Our p value is 80; our r in decimal form is .024, and our t is 1.5. Multiplying those together,

80(.024)(1.5) = $2.88

The monthly interest rate to earn the same amount of interest during the same amount of time, assuming you are investing $80, would not change. It would be 2.4%.

7 0

4 years ago