All categories

2 years ago

Please help within the next hour

Mathematics

1 answer:

faust18 [17]2 years ago

3 0

Answer:

it's x= 1±sqrt(47)

Step-by-step explanation:

You might be interested in

List three different combinations of coins each with a value of 30% of a dollar

SVETLANKA909090 [29]

Answer:

1. one quarter and one nickel

2. two dimes and two nickels

3. one dime, two nickels, and ten pennies

Step-by-step explanation:

(Assuming you mean U.S.A. money)

30% of a dollar equals 30 cents. Each of the above equals 30 cents.

5 0

3 years ago

Read 2 more answers

I don't understand this and would appreciate an explanation as well :)

Neporo4naja [7]

We want to solve the two equations
$e^{x}=6$
and
$4^{y+3}=3$

First equation.
Take natural log of each side.
$ln(e^{x})=ln(6)\\xln(e)=ln(6)\\
x=ln(6)=1.7918$
Note that ln(e) = 1 by definition.
Answer: x = 1.79 (nearest hundredth)

Second equation.
Take natural log of each side.
$ln(4^{y+3})=ln(3)\\
(y+3)ln(4)=ln(3)\\
y+3= \frac{ln(3)}{ln(4)} =0.7925\\y=0.7925-3=-2.2075$
Answer: y = -2.21 (nearest hundredth)

6 0

3 years ago

(9x90)+(8x11)+(4x5) if someone can help please

butalik [34]

Answer:

918

Step-by-step explanation:

Use distributive property.

(810) + (88) + (20) = 918

6 0

3 years ago

Read 2 more answers

On a certain farm, the shed (S) is located at (–200, 180) and the well (W) is located at (200, 0). How far is it from the shed t

lisov135 [29]

$\sqrt{400^{2} + 180^{2} } = 438$
So C. About 430 according to the Pythagorean theorem

4 0

3 years ago

Read 2 more answers

Ethan is 1.85 meters tall. At 10 a.m., he measures the length of a tree's shadow to be 28.45 meters. He stands 24.3 meters away

ser-zykov [4K]

Answer:

Height is 12.68 m

Step-by-step explanation:

• Consider triangle formed by Ethan's head, Ethan's feet and shadow's tip

opposite = 1.85 m
hypotenuse = x
adjacent = (28.45 - 24.3) = 4.15 m

• From pythogras theorem:

${ \rm{a {}^{2} + {b}^{2} = {c}^{2} }} \\ { \rm{ {4.15}^{2} + {1.85}^{2} = {x}^{2} }} \\ { \rm{ {x}^{2} = 20.645}} \\ { \rm{x = 4.54}} \\ { \rm{hypotenuse = 4.54 \: m}}$

• From scale factors:

${ \rm{ \frac{28.45}{4.15} = \frac{h}{1.85} }} \\ \\ { \rm{h = \frac{1.85 \times 28.45}{4.15} }} \\ \\ h = 12.68 \: m$

4 0

2 years ago

Read 2 more answers