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
oksano4ka [1.4K]
3 years ago
15

Base=30cm Heights=20cm Find the X?

Mathematics
2 answers:
Leviafan [203]3 years ago
8 0

Answer: 25

Assuming the dotted line touches the middle of the base of the triangle,

Using Pythagoras Theorem,

(30/2)^2 + (20)^2 = x^2

x^2 = (15)^2 + 400

x^2 = 625

x = √625 or -(√625)

x = 25 or -25

But since x needs to be a positive value,

x = 25

Virty [35]3 years ago
6 0

Answer:

x = 25 cm

Step-by-step explanation:

Given the triangle is isosceles ( 2 equal sides )

Then the line from the vertex is a perpendicular bisector of the base

We can use Pythagoras' identity on the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

where x is the hypotenuse and the legs are 15 and 20, so

x² = 15² + 20² = 225 + 400 = 625

Take the square root of both sides

x = \sqrt{625} = 25

You might be interested in
Use the following figure to find the value of x <br>(plz help)​
masha68 [24]
X-6=1/3x( solve equation)
x-1/3x=6
0.7x=6
x=6/0.7
x=8.5 ( i guess its like this)
7 0
3 years ago
Find two consecutive odd integers whose sum is 36.
miskamm [114]
2 consecutive odd integers...x and x + 2

x + (x + 2) = 36
2x + 2 = 36 <===
3 0
3 years ago
Read 2 more answers
Please help i’ll mark brainliest!!!!!!
dangina [55]

Answer:

Width = 2x²

Length = 10

Step-by-step explanation:

The greatest common monomial factor of 14x² and 6x² is 2x² so the width is 2x².

Width = 2x²

Length = (14x² ÷ 2x²) + (6x² ÷ 2x²)

            = 7 + 3

             = 10

6 0
3 years ago
Question 1.1. Suppose a normal distribution has a mean of 20 and a standard deviation of 4.
Nookie1986 [14]
Answer: Question 1.1: It is 1.5 standard deviations away from the mean.

Our value of 26 is 6 units about the mean of 20. If each standard deviation is 4, we just divide 6 by 4. This gives us the number of standard deviations.

Question 2.2 The correct answer is -0.52

If we are 0.52 standard deviations below the mean, then our z-score is simply -0.52. The definition of a z-score is the number of standard deviations from the mean.
7 0
3 years ago
A linear regression is done on data the line of best fit is y= 1.25x-6.25. What is the residual for the point (1,1)?
Damm [24]

Answer:

6

Step-by-step explanation:

Find the predicted y value when x=1:

\hat{y}=1.25x-6.25\\\hat{y}=1.25(1)-6.25\\\hat{y}=1.25-6.25\\\hat{y}=-5

Find the residual:

\text{Residual}=\text{Actual Value}-\text{Predicted Value}\\\text{Residual}=y-\hat{y}\\\text{Residual}=1-(-5)\\\text{Residual}=1+5\\\text{Residual}=6

Because our residual is positive, this is an indicator that our predicted y value is too low.

6 0
2 years ago
Other questions:
  • Ab and ba name the same ray.<br><br><br> always<br> sometimes<br> never
    10·2 answers
  • Write each number in standard notation
    8·2 answers
  • The Apache Taxi Company charges $2.50 to pick up a passenger and then adds $1.95 per mile. Isaac was charged $27.46 to go from o
    14·1 answer
  • If I could get some help it would be very much appreciated
    7·2 answers
  • Find the arc length. Round to the nearest tenth.<br> 5 m<br> 2 pi over 3
    6·1 answer
  • Write an equation that you can use to solve for x.<br><br> Enter your answer in the box.
    10·2 answers
  • Could anybody explain simplifying fractions to me with an example?
    5·1 answer
  • Find the perimeter of the shaded region below.
    9·1 answer
  • I need one quarter liter of milk to make a milkshake. A.How much milk will I need to make 3 milkshakes?. B. How many ml will tha
    9·1 answer
  • How do you represent a table with linear functions
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!