All categories

3 years ago

Complete: 3/4 x 20 = 5/6 x ?

Mathematics

2 answers:

Anna007 [38]3 years ago

8 0

As long as no work needs to be shown, X=18.

Nuetrik [128]3 years ago

4 0

X=18

Hope this helps!

You might be interested in

A baseball is hit and its height is given by h = 29.4t – 4. 9t^2, where h is the

ioda

Answer:

44.1m

Step-by-step explanation:

we are given a quadratic function which represents the height and time of a baseball

$\displaystyle h = 29.4t - 4.9 {t}^{2}$

we want to figure out maximum height of

the baseball

since the given function is a quadratic function so we have a parabola

which means figuring out the maximum height is the same thing as figuring out the maximum y coordinate (vertex)

to do so we can use some special formulas

recall that,

$\displaystyle \rm t= \frac{ - b}{ 2a}$

$\displaystyle H_{\text{max}}=f(t)$

notice that, our given function is not in standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

let's make it so

$\displaystyle h = - 4.9 {t}^{2} + 29.4t$

therefore we got

our a is -4.9 and b is 29.4

so substitute:

$\displaystyle\rm t= \frac{ -( 29.4)}{ 2 \cdot - 4.9}$

remove parentheses and change its sign:

$\displaystyle\rm t= \frac{ -29.4}{ 2 \cdot - 4.9}$

simplify multiplication:

$\displaystyle\rm t= \frac{ -29.4}{ - 9.8}$

simplify division:

$\displaystyle \: t = 3$

so we have figured out the time when the baseball will reach the maximum height

now we have to figure out the height

to do so

substitute the got value of time to our given function

$\displaystyle H_{\text{max}}=29.4\cdot 3-4.9\cdot {3}^2$

simplify square:

$\displaystyle H_{\text{max}}=29.4\cdot 3-4.9\cdot 9$

simplify mutilation:

$\displaystyle H_{\text{max}}=88.2-44.1$

simplify substraction:

$\displaystyle H_{\text{max}}=44.1$

hence,

the maximum height of the baseball is 44.1 metres

4 0

3 years ago

Read 2 more answers

Reduce to simplest form. -7/12 +3/8

gayaneshka [121]

Answer:

ok so you should get -5/24 in simplest form.

Decimal form- -0.2083 repeating

Step-by-step explanation:

Hope this helped :)

4 0

3 years ago

In 9 and 10, order the decimals from greatest to least. 9. 878.403, 887.304,887.043

Katena32 [7]

Answer:

Greatest to least: 887.304, 887.043, 878.403

Step-by-step explanation:

7 0

3 years ago

(SAT Prep) In the given figure, a ∥ b. Find the value of z. A. 50° B. 90° C. 45° D. 75°

Mrac [35]

Answer: The awnser is 45 degrees

Step-by-step explanation:

As you can see there are two z's which equal to 90 degrees and one z eqquals to 45 degrees.

5 0

3 years ago

The figure below shows a circular fountain in a park with a garden to be planted with flowers. The parks department wants to pla

Dominik [7]

Answer: The answer is 284.

Step-by-step explanation:

The area of the garden is an annulus whose,

Outer diameter = 18 ft

Inner diameter = 18 ft - 2*3ft = 12 ft

Therefore,

Outer radius = 18/2 = 9 ft

Inner radius = 12/2 = 6 ft

Area of garden = Area of annulus

Area of garden = π*(9 ft)2 - π * (6 ft)2

Area of garden = 142

Given:

2 flowers are planted per square foot.

Therefore for 142 ft2,

Number of flowers required = 2*142 = 284

The answer is 284.

3 0

2 years ago