1answer.
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
astra-53 [7]
3 years ago
9

A trapezoid has an area of 30 in2. If the lenghts of the bases are 4.8 and 5.2 in, what is the lenght?

Mathematics
1 answer:
harkovskaia [24]3 years ago
3 0
Looking for the height, if trapezoid area equals (a+b)/2 x h then h = 2A/(a+b)
so h = 2(30)/(4.8+5.2) = 6
You might be interested in
State the requirements that must be satisfied to use the​ one-way ANOVA procedure. Select all that apply. A. The k samples must
Sergeu [11.5K]

Answer:

The correct option are: (A), (B), (C) and (E).

Step-by-step explanation:

The One-Way ANOVA is a statistical test used to compare the three or more population means.

The hypothesis is:

<em>H</em>₀:  The population means are equal, i.e. μ₁ = μ₂ = μ₃ =...= μₙ

<em>H</em>ₐ: At least one of the population mean differ.

The Assumptions of One-way ANOVA are:

  1. The samples selected from each population are independent of each other.
  2. The population distribution of the dependent variables follow Normal distribution.
  3. The population variances are always equal for all the groups.

Thus, the correct option are: (A), (B), (C) and (E).

3 0
3 years ago
Express the quotient of z1 and z2 in standard form given that <img src="https://tex.z-dn.net/?f=z_%7B1%7D%20%3D%20-3%5Bcos%28%5C
Lesechka [4]

Answer:

Solution : -\frac{3}{4}-\frac{3}{4}i

Step-by-step explanation:

-3\left[\cos \left(\frac{-\pi }{4}\right)+i\sin \left(\frac{-\pi \:}{4}\right)\right]\:\div \:2\sqrt{2}\left[\cos \left(\frac{-\pi \:\:}{2}\right)+i\sin \left(\frac{-\pi \:\:\:}{2}\right)\right]

Let's apply trivial identities here. We know that cos(-π / 4) = √2 / 2, sin(-π / 4) = - √2 / 2, cos(-π / 2) = 0, sin(-π / 2) = - 1. Let's substitute those values,

\frac{-3\left(\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i\right)}{2\sqrt{2}\left(0-1\right)i}

=-3\left(\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i\right) ÷ 2\sqrt{2}\left(0-1\right)i

= 3\left(-\frac{\sqrt{2}i}{2}+\frac{\sqrt{2}}{2}\right) ÷ -2\sqrt{2}i

= \frac{3\left(1-i\right)}{\sqrt{2}}÷ 2\sqrt{2}i = -3-3i ÷ 4 = -\frac{3}{4}-\frac{3}{4}i

As you can see your solution is the last option.

3 0
3 years ago
What is 6(-5n + 7) simplified?
MrRa [10]

Answer:

-30n+42

Step-by-step explanation:

Hope fully this is helpful

3 0
2 years ago
Read 2 more answers
Solve the expression for x: (4 – 2) (x – 2) = 4x – 8 A. x = –2 B. x = 0 C. x = 6/5 D. x = 2
Ratling [72]

Answer:

Option D) x = 2

Step-by-step explanation:

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

Distribute and simplify 4-2

2(x-2) = 4x - 8

2x-4 = 4x -8

Subtract 2x on both sides and add 8 on both sies

4x - 8 = 2x-4

2x= 4

Divide 2 on both sides

x = 2

Please mark for Brainliest!! :D Thanks!!

For more questions or more information, please comment below!

7 0
3 years ago
What is the value of 5/zwhen z=2
AveGali [126]

Step-by-step explanation:

When

z = 2

Then

5/z

= 5 / 2

= 2.5

Hope it will help :)

7 0
3 years ago
Other questions:
  • What us the approximate length of the diameter,d?
    9·1 answer
  • A rectangle is twice as long as it is <br> wide. Its perimeter is 30. What is its area?
    14·1 answer
  • Round 2.12747677748 to the nearest ten-thousandth.
    6·2 answers
  • What is the approximate volume of a cone with a height of 12 in. and radius of 9 in.?
    13·1 answer
  • The time required to deliver and install a computer at a customer's location is t= 4 + d over r, where t is time in hours, d is
    13·1 answer
  • Solutions to ( x - 2 )² = -16​
    10·2 answers
  • Please help this is for my geometry final i will appreciate it so much :)
    8·2 answers
  • What is the amplitude of y=4 sin 1/3 x
    7·1 answer
  • What is the perimeter of the rhombus below?
    7·1 answer
  • Identify the slope and y-intercept of the lins given by the equation y=2x 1.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!