i-Ready Which kind of triangle is shown? equilateral triangle acute triangle right triangle obtuse triangle​

Answer:

The calculated value z= 0.0063 does not  fall in the critical region  so we fail to reject the null hypothesis. And accept that the valve does not perform above the specifications.

Step-by-step explanation:

Given that

Population mean= μ = 8.0

Sample mean= x`= 8.1

Sample size= n= 250

Sample standard deviation= s= 1.00

Significance level= ∝ =0.01

The null hypothesis and alternate hypothesis are  

H0: μ < 8.0

Ha: μ ≥ 8.0  One tailed test

The claim is that the valve perform above the specifications

The critical value at 0.01 significance level for one tailed test is z > ±2.33

The test statistic z is used

z= x`- μ/ σ/√n

Z= 8.1-8.0/ 1/√250

z= 0.1/1/15.811

z= 0.0063

The calculated value z= 0.0063  does not fall in the critical region  so we fail to reject the null hypothesis.

okay so you did 1-5

Ima do 6-10

(if you didn’t do 1-5) just comment

6)

1/12+1/x=1/6

Multiply all terms by x

you’d get

1x/12+1=1x/6

Now solve that

You’d get 12

7)

1/12+1/x=2

Multipyl each term by x

1x/12+1 = 1x/2

Solve

you’d get

x=2.4

8)

1/8+1/x=1/4

Multiply x

1x/8+1=1x/4

Now solve

x=8

9)

1/10+1/11=1/x

Add 1/10+1/11 and get 21/110=1/x

Solve in proportion

get 5.24

10)

1/6+1/x=1/5

Multiply each by x

1x/6+1=1x/5

Solve

get 30

You’d get 110.21

Answer:

b. 105 in

Step-by-step explanation:

Area of a triangle = ½ bh [base × height].

Area of a rectangle = lw [length × width].

The shaded region is taken up by the two triangles which means that you subtract the area of the rectangle from the two triangles.

Assuming that the two triangles are congruent [same shape and size], the area of the two triangles are really just the base times the height because ½bh + ½bh = bh.

So 3 × 5 = 15 in.

The area of the rectangle shown is its length times it's width which is 15 × 8 = 120in.

Now just subtract the area of the rectangle from the area of the triangles that are taking up the area:

Therefore,

Area of the rectangle – Area of the triangles = shaded area

120in – 15in = 105in = shaded area.

Answer:

a=5

Step-by-step explanation:

Answer: 2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Acellus

Answer: There are no real solutions.

Step-by-step explanation:

We have the equation:

x = y^2

y = x + 3/2

To solve this, we can start by noticing that x is already isolated in the first equation, then we can replace it in the second equation to get:

y = y^2 + 3/2

And now we can rewrite this as:

y^2 - y + 3/2 = 0

This is a quadratic equation, and the solutions can be calculated with Bhaskara's equation, the solutions are:

[tex]y = \frac{-(-1) +- \sqrt{(-1)^2 - 4*3/2*1} }{2*1} = \frac{1 + \sqrt{-5} }{2}[/tex]

We have a negative number inside the square root, this means that the solutions are complex numbers.

Then we can conclude that the system of equations has no real solutions.

Answer:

a. 1.32 m³

b. 1.32 kL

c. 105.04 m

Step-by-step explanation:

Area of roof = 110 m²

Rain fall = 12mm = (12/1000)m = 0.012 m

(a) Volume of water that fell on roof = Area of roof × Rain depth

    = 110 × 0.012

    = 1.32 m³

(b) 1 m³ = 1 kL

 ∴ 1.32 m³ = 1.32 kL

(c) Radius of tank = (4/2) = 2 m

    Volume of tank = Base area × Height

     = πr²h

     = π × (2)² × h

     = 4πh

     The volume added to the tank must be equal to the volume which falls on roof.

     i.e. Volume of tank = Volume of water that fell on roof

      or, 4πh = 1.32

      or, h = 1.32 / (4π)

      ∴   h = 0.10504 m = (0.10504/100)cm = 10.504 cm

∴ The water level rises by about 10.504 cm.

Answer:

45.92

Step-by-step explanation:

50%=14

10%=2.8

4%=1.12

64%=19.92

19.92+28= 45.92

Answer:

10

Step-by-step explanation:

Let us find the exact number of donors of gold and bronze respectively given there are 40 in total.

Gold: 45% of 40 = 45/100 *40 = 18 donors

Bronze: 20% of 40 = 20/100 *40 = 8 donors

18 donors - 8 donors = 10 more donors

I hope this helps! :)

Answer:

There were 58 hardback books there.

Step-by-step explanation:

This question can be solved using a system of equations.

I am going to say that:

x is the number of paperback books.

y is the number of hardback books.

The number of paperbacks is 12 less than three times the number of hardbacks.

This means that:

[tex]x = 3y - 12[/tex]

Huong had 162 paperbacks.

This means that [tex]x = 162[/tex]

How many hardback books were there?

We want to find y.

So, using the value of x, and the first equation, we have that:

[tex]x = 3y - 12[/tex]

[tex]3y = x + 12[/tex]

[tex]3y = 162 + 12[/tex]

[tex]3y = 174[/tex]

[tex]y = \frac{174}{3}[/tex]

[tex]y = 58[/tex]

There were 58 hardback books there.

Answer:

$40

Step-by-step explanation:

Convert gallons to quarts using the following ratio:

4 quarts = 1 gallon

Since she bought 5 gallons of orange juice, multiple 5 by 4.

5 × 4 = 20 quarts

1 quart of orange juice costs $2.

20 × $2 = $40

Hope that helps.

Answer:

omg the next tik.tok dance

Step-by-step explanation:

Answer:

wow wouldnt dancing on the floor be called rolling?

Step-by-step explanation:

Answer:

m=3, y = 3x - 2

Step-by-step explanation:

slope = rise / run

slope = 6/2

slope = 3

Answer:

The slope is 3.

Step-by-step explanation:

Slope is equal to rise over run. Let’s take a look at the points given to us on the graph.

To go from the leftmost point to the rightmost point, we rise (go up) 6 units, and then we run over (go right) 2 units. So we have:

Slope = Rise/run = 6/2

Now 6/2 is equal to 3, and that’s the slope.

Answer:

y = 1/6x

Step-by-step explanation:

linear equations don't have exponents

9514 1404 393

Answer:

  a) 3

  b) 1

  c) y = 3x +1

Step-by-step explanation:

Given:

  A(1, 4), B(2, 7)

  m = (y2 -y1)/(x2 -x1)

Find:

  a) the slope of the line through these points

  b) the y-intercept of the line through these points

  c) the equation of the line through these points

Solution:

a) Using the given formula, the slope is ...

  m = (7 -4)/(2 -1) = 3/1 = 3 . . . the slope of the line

__

b) The y-intercept can be found from* ...

  b = y1 -m·x1

  b = 4 -3·1 = 1 . . . the y-intercept

__

c) The equation in slope-intercept form is ...

  y = mx +b

  y = 3x +1

_____

* This equation for the y-intercept is not one you see often. It can be derived from the point-slope form of the equation of a line:

  y -y1 = m(x -x1)

  y = mx -m·x1 + y1 = mx +b . . . . eliminate parentheses, add y1

  b = y1 -m·x1 . . . . . . . . solve for b

Answer:  

your answer is A

Step-by-step explanation:

Answer:

3 gold

3 silver

18 bronze

Step-by-step explanation:

Look at the ratio. 1:1:6. Add the numbers together and you get 8 right?

8 × 3 = 24

Now that you know how much to multiply each part of the ratio by, (3, if you didn't get that.) now you multiply.

1 × 3 = 3 Gold

1 × 3 = 3 Silver

6 × 3 = 18 Bronze

Answer:

32/5

Step-by-step explanation:

Convert the mixed number 6 2/5 into an improper fraction by multiplying the denominator by the whole number and then add the numerator.

Ex: 6 2/5 = 5 x 6 +3  

Answer:  2 tokens

Step-by-step explanation: 6 and 12 are both able to be divided by 2 i dunno

Answer:

189 yards cubed, hope this helped! :D

Step-by-step explanation:

Answer:

5 chairs at each table and Yes there will be 4 chairs left over

Step-by-step explanation:

5*8= 40

44-40= 4

Sentence: 5 chairs will be placed at each table and there will be 4 chairs left over .

Answer:

"There will be five seats at each table and will be four chairs left over since five times eight equals 40 so there will be four chairs left over"

Step-by-step explanation:

you can copy that sentence

Answer:

A metric ton weights more because a kg is equal to about 2.204 lbs.

1000 x 2.204 = 2204 lbs > 2000 lbs

Step-by-step explanation:

Hope this helps! Have a nice day!

The greater weight is 1000 metric ton and it is greater than a British ton by 205 lb

A metric ton = 1000 kg

British ton = 2000 lb

Converting both measures to the same unit :

A metric ton to pounds = (1000 × 2.205) = 2205 lb

Therefore,

Comparing the weight :

Therefore, the greater weight is 1000 metric ton and it is greater than a British ton by 205 lb

Learn more: https://brainly.com/question/18109354

Answer:

The expression giving her net earnings for a day with more than 8 hours worked is X = 80 + 15H, where H means "extra hours worked".

Step-by-step explanation:

Given that Daisy works at an ice-cream parlor earning $10 per hour for the first 8 hours she works in a day, and 1.5 times her hourly wage for every extra hour she works, in order to know how much can she make in a day working more than 8 hours the following equation has to be made:

X = (8 x 10) + (H x (1.5 x 10))

X = 80 + 15H

Therefore, if Daisy works 13 hours, the equation works as follows:

X = 80 + 15x13

X = 80 + 195

X = 275  

Answer: the answer is a

Answer:

97/200

Step-by-step explanation:

48.5 % is just 48.5 * 100%, or 48.5/100

We can then simplify 48.5/100 and get rid of the decimal place:

485/1000 =

97/200

I hope this helped! :)

Answer:

97 /200

Step-by-step explanation:

Answer:

56

Step-by-step explanation: