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3 years ago

What is the decimal expansion for 7 over 9

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

6 0

Answer:

0.77777777......

Step-by-step explanation:

You divide them. Hope I helped!

Please mark Brainliest!!!!

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Is the point (20,15) on the line? How do you know?

elena-s [515]

Answer:

1. (4, 3) and (8, 6)

2. Yes. The line shows a direct proportion. y = 0.75x

Try (20, 15) in the equation.

15 = 0.75(20)

15 = 15

Point (20, 15) works in the equation, so point (20, 15) is on the line.

Let x = 100.

y = 0.75x

y = 0.75 × 100

y = 75

Since x = 100 gives y = 75, point (100, 75) is on the line.

Let x = 90

y = 0.75x

y = 0.75 × 90

y = 67.5

For x = 90, y must be 67.5. Since this point is (90, 68), it is not on the line.

7 0

3 years ago

Approximately how many times greater is 9.75×106 than 1.25×102 ? 7.8 7800 78,000 780,000

Ganezh [65]

It would probebly be 7.8

3 0

3 years ago

Read 2 more answers

Please Help Me

ludmilkaskok [199]

Given:

The point (9,-12) is on terminal side of angle theta in standard position.

To find:

The exact value of each of the six trigonometric functions of theta.

Solution:

The given point is (9,-12). Here, x-coordinate is positive and y-coordinate is negative. So, the point lies in 4th quadrant and only cos and sec are positive in 4th quadrant.

We know that,

$r=\sqrt{x^2+y^2}$

$r=\sqrt{9^2+(-12)^2}$

$r=\sqrt{81+144}$

$r=\sqrt{225}$

$r=15$

Now,

$\sin \theta=\dfrac{y}{r}=\dfrac{-12}{15}=-\dfrac{4}{5}$

$\cos \theta=\dfrac{x}{r}=\dfrac{9}{15}=\dfrac{3}{5}$

$\tan \theta=\dfrac{y}{x}=\dfrac{-12}{9}=-\dfrac{4}{3}$

$\cot \theta=\dfrac{1}{\tan \theta}=-\dfrac{3}{4}$

$\text{cosec} \theta=\dfrac{1}{\sin \theta}=-\dfrac{5}{4}$

$\sec \theta=\dfrac{1}{\cos \theta}=\dfrac{5}{3}$

Therefore, the values of six trigonometric functions of theta are $\sin \theta=-\dfrac{4}{5},\cos \theta=\dfrac{3}{5},\tan \theta=-\dfrac{4}{3},\cot \theta=-\dfrac{3}{4},\text{cosec} \theta=-\dfrac{5}{4},\sec \theta=\dfrac{5}{3}$ .

6 0

4 years ago

The number of chocolates sold can be determined by the equation: P=$.63c, where P is the price and c is the number of chocolates

balu736 [363]

Answer:

p = price

0.63 = price of each piece of chocolate

c = number of pieces of chocolate

just multilply the number of pieces of chocolate by 0.63 to get the total price

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

What is the equation for calculating the electrical force, Fe, between two charges? Fe = kStartfraction q Subscript 1 baseline t

umka21 [38]

Answer:

$F=\frac{K Q1Q2}{d^2} \\$

Step-by-step explanation:

According to coulombs law "the force of attraction or repulsion between two charges Q1 and Q2 in a given medium is directly proportional to the product of their charges and inversely proportional to the square of the distance separating them"

$F=\frac{K Q1Q2}{d^2} \\$

where

k = constant of proportionality ( $9.05*10^9$ )

6 0

4 years ago