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tiny-mole [99]
3 years ago
12

How many solutions do 3y-6x=15 have?

Mathematics
1 answer:
Papessa [141]3 years ago
8 0

Answer:

infinite

Step-by-step explanation:

You might be interested in
Find all the missing sides and angles (picture attached)
wel

Answer:

\boxed{x=73.74}

\boxed{y=16.26}

\boxed{z=25}

Step-by-step explanation:

Hello there!

<u>Algebra 1</u>

The first thing we should find is the missing angle

Because this is a right triangle we can solve it using the Pythagorean Theorem

The Pythagorean theorem states that the sum of the two legs squared equal the hypotenuse squared

the formula... a^2+b^2=c^2 where a and b = legs and c = hypotenuse

we are given two legs so we plug in a and b and solve for c

7^2+24^2=c^2\\7^2=49\\24^2=576\\576+49=625\\625=c^2\\\sqrt{c^2} =c\\\sqrt{625} =25\\c=25

so we can conclude that the missing side length ( or z) equals 25

now to solve for the angles

<u>Trigonometry</u>

We can solve for y using sin

sin = opposite side divided by the hypotenuse

the opposite of y is 7 and the hypotenuse is 25

so we set up an equation sin(y)=\frac{7}{25}

now we solve for y

\frac{7}{28} =.28\\arcsin(y)=y\\arcsin(.28)=16.26020471

then we round to the nearest hundredth

so we can conclude that angle labeled y = 16.26

<u>basic geometry</u>

Remember all of the angles in a triangle add up to equal 180 so we can find x by subtract the known angles from 180

180 - 90 - 16.26 = 73.74 so we can conclude that x = 73.74

7 0
3 years ago
An advisor to the mayor of a large city wants to estimate, within 3 minutes, the mean travel time to work for all employees who
Shkiper50 [21]

Answer:

64

Step-by-step explanation:

Given that an advisor to the mayor of a large city wants to estimate, within 3 minutes, the mean travel time to work for all employees who work within the city limits.

Let X be the random variable denoting the time for employees to travel within city limit

Std dev of X = 12.25 minutes

For 95% confidence interval Z critical 1.96 is used because population std dev is known

Margin of error = 1.96*std error = 3 (given)

i.e. 1.96(\frac{12.25}{\sqrt{n} } )=3

where n is the desired sample size.

Simplify to get

\frac{24.01}{\sqrt{n} } =3\\n=64.053

Hence atleast 64 employees should he poll

8 0
4 years ago
A man is 13 times as old as his son is. In 10 years he will be 3 times as old as his son is now. How old are they now?
valkas [14]

Answer:

the son is 2

man is 26

+10 yrs

son=12

man=36

Step-by-step explanation:

Let the son's age be x.

Then the father's age is 13x.

In ten years their ages will be (x+10) and (13x+10).

(13x+10)=3(x+10)

13x+10=3x+30

10x=20

x=2

The son is 2 years old.

3 0
3 years ago
Pls answer. will mark as branliest
Ulleksa [173]

Answer:

80°

Step-by-step explanation:

Angle CBD = 100°

Angle ABC = 180° - 100° = 80°

Angles on a straight line add up to 180°.

Angle ABC and angle EFB are corresponding angles, so they are equal.

= 80°

4 0
3 years ago
Read 2 more answers
A circular garden has a diiameter of 6 yards what is the area of the garden use 3.14 for Tt
Rom4ik [11]

Given the diameter of the circular garden, the area of the garden is 28.36 yd².

<h3>What is the area of the garden?</h3>

The area of a circle is expressed as; A = πr²

Given that;

  • Diameter d = 6yd
  • Radius r = d/2 = 6yd/2 = 3yd
  • Area A = ?

A = πr²

A = 3.14 × (3yd)²

A = 3.14 × 9yd²

A = 28.36 yd²

Given the diameter of the circular garden, the area of the garden is 28.36 yd².

Learn more about circles here: brainly.com/question/11952845

#SPJ1

6 0
2 years ago
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