answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
leva [86]
2 years ago
4

1) Tanya is buying edging for a triangular flower garden she plans to build in her backyard. If the lengths of the three pieces

of edging that she purchases are 13 feet, 10 feet, and 7 feet, will the flower garden be in the shape of a right triangle ?
Mathematics
1 answer:
mart [117]2 years ago
5 0

Answer:

<em>The Flower Garden is not in the shape of a right Δ</em>

Step-by-step explanation:

<em>~ To prove that this garden is in the shape of a right triangle, it can be done so through contradiction ~</em>

Pythagorean Theorem is applied to a right triangle, so we can say that the two legs are 10 and 7 feet, the hypotenuse being 13, knowing it is the longest side;

a^2 + b^2 = c^2,

10^2 + 7^2 = 13^2,

100 + 49 = 169,

149 ≠ 169,

<em>So the Flower Garden will not be in the shape of a right Δ</em>

You might be interested in
Daniel, my son, is exactly one fifth of my age. in 21 years time, i will be exactly twice his age. my wife is exactly seven time
nydimaria [60]
Let daniel's age = d and let jessica's age = j
let your current age = x and your wife's current age = y

x = 5d (given in question)
∴ x - 5d = 0

x + 21 = 2(d+21) (given in question)
∴ x + 21 = 2d + 42
∴ x - 2d = 21

We can solve these two rearranged equations simultaneously by multiplying the first equation by -1 and adding them. This gives us the following:

3d = 21
∴ d = 7

This means that daniel is currently 7 and (if we substitute d = 7 into one of the equations) you are 35. We use a similar method for your wife's and jessica's current ages.

y = 7j (given in question)
∴ y - 7j = 0

y + 8 = 3(j + 8)
∴y + 8 = 3j + 24
∴ y - 3j = 16

If we use a similar method of elimination we get this:

4j = 16
∴ j = 4

Hence, from this we can concur that daniel is 7 and jessica is 4.
3 0
2 years ago
The manager of a paint supply store wants to estimate the actual amount of paint contained in 1​-gallon cans purchased from a na
lorasvet [3.4K]

Answer:

a. 95​% confidence interval estimate for the population mean amount of paint included in a​ 1-gallon can is 0.998±0.0055

b.  <u>No,</u> because a​ 1-gallon paint can containing exactly​ 1-gallon of paint lies <u>within</u> the 95​% confidence interval.

c. Yes.  The population amount of paint per can is assumed normally distributed, because confidence interval calculations assume normal distribution of the parameter.

d. 90% confidence interval is 0.998±0.0046. ​The answer in b. didn't change; 1-gallon paint can containing exactly​ 1-gallon of paint lies <u>within</u> the 90​% confidence interval. The manager <u>doesn't have</u> a right to complain to the manufacturer.

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the sample mean amount of paint per 1​-gallon can (0.998 gallon)

ME is the margin of error from the mean

And margin of error (ME) can be calculated using the equation

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in the 95% confidence level (1.96)
  • s is the sample standard deviation (0.02 gallon)
  • N is the sample size (50)

Then ME=\frac{1.96*0.02}{\sqrt{50} }≈0.0055

95% confidence interval is 0.998±0.0055

90% confidence interval can be calculated similary, only z statistic is 1.64.

ME=\frac{1.64*0.02}{\sqrt{50} }  ≈0.0046

90% confidence interval is 0.998±0.0046

8 0
2 years ago
The sum of two numbers is 80. The larger number is four more than three times the smaller number. Find both numbers.
nexus9112 [7]

Let the smaller number = X

Then the larger number is 3x+4 ( four more than 3 times the smaller number)


The sum of both numbers = 80

so you have X + 3X+4 = 80

Simplify the left side:

4x+4 = 80

Subtract 4 from each side:

4x = 76

Divide both sides by 4:

X = 76/4

X = 19

The smallest number is 19

The largest number is 80 - 19 = 61 ( check: 3*19 = 57+4 = 61)


The two numbers are 19 and 61

3 0
2 years ago
A car tire with a radius of 16inches is turning at a rate of 120 revolutions per minute. Find the exact linear speed of the tire
anygoal [31]

Answer:

The speed of the tyre of the car is 1002.24 feet per minute .

Step-by-step explanation:

Given as :

The radius of the car wheel = r = 16 inches

Since 12 inches = 1 feet

So,  16 inches = \frac{1}{12}×16 = 1.33 feet

The number of revolution of the wheel = 120 revolution per minute

Let The speed of the wheel = s feet per minute

The circumference of wheel = 2 × \pi × radius

where  \pi  = 3.14

or, circumference =  2 × 3.14 × 1.33

Or, Circumference = 8.352 feet

Now , Speed =  circumference of wheel × number of revolution

or, Speed = 8.352 feet × 120 revolution per minute

∴ Speed = 1002.24 feet per minute

Hence The speed of the tyre of the car is 1002.24 feet per minute . Answer

4 0
3 years ago
Trina examined the equation below and said that the equation has exactly one solution. Negative 8 (x minus 4) + 2 x = negative 4
shutvik [7]

Answer

The answer is C. Trina is not correct because the two sides of the equation are equivalent.

Step-by-step explanation:

1.  solve for x

-8(x - 4) + 2x = -4(x - 8) -2x

-8x + 32 + 2x = -4x + 32 -2x

-6x + 32 = - 6x + 32

0 = 0

This equation has infinite solutions, any rational number fits as solution for x in this equation. And as we can see both sides of it are equivalent.

Therefore, the correct answer is C. Trina is not correct because the two sides of the equation are equivalent.

<u><em></em></u>

<u><em></em></u>

<u><em>Hope This Helps :p</em></u>

8 0
2 years ago
Read 2 more answers
Other questions:
  • A forest ranger in a 140-foot observation tower sees a fire moving in a direct path toward the windmill by the lake. The angle o
    9·1 answer
  • Write the sum in sigma notation. $ \noindent 1 - x + x^2 - x^3 + \cdot\cdot\cdot + {(-1)}^n x^n $
    6·1 answer
  • Suppose a teacher gives 10 points for putting your name on a 100 point test. The minimum score on that test is 10 and the maximu
    10·1 answer
  • The bottom of Ignacio's desktop is 74.5\,\text{cm}74.5cm74, point, 5, space, c, m from the floor. Ignacio sits in his adjustable
    11·1 answer
  • How well can you apply Boyle’s law to this sample of gas that experiences changes in pressure and volume? Assume that temperatur
    8·2 answers
  • How many 3/4 cup servings are in 12 cups of cherries?
    13·1 answer
  • A random sample of BYU-Idaho students was surveyed and asked if they were in favor of retaining the penny as a form of currency
    10·1 answer
  • What is the solution of log2 (3x-7) =3
    10·2 answers
  • The factor tree for 3,025 is shown. A factor tree starts with 3,025 at the top. 3,025 branches down to 5 on the left and 605 to
    6·1 answer
  • The y-coordinate if you move five units up from the ordered pair (22, 23)​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!