Mathematics High School

please give a step by step explanation

Please Give A Step By Step Explanation

Answers

Answer 1

∡ABD and ∡BAD = ∡55°

As we can see Δ ABD is isosceles

so,

∡ABD = ∡BAD (let us assume them to be ∡F)

Therefore

∡ABD+∡BAD+∡ADB = 180°

2∡F+∡ADB = 180°

2∡F + 70° = 180°

∡F = 55°

∡ABD = ∡BAD = 55°

Now

∡ABD + ∡CBD = 180° (Supplementary Angles)

55° + ∡CBD = 180°

∡CBD = 125°

As the sum of all the angles in a triangle is 180°

∡BDC +∡DCB +∡CBD = 180°

∡BDC + 29° +125° = 180°

Hence

∡BDC = 26°

To know more about Isosceles Triangle

https://brainly.in/question/1079349

Related Questions

Please Help Me In This. ASAP! I'll Give brainliest!!!!
- Use the drop-down menus to complete the statements about inertia, Earth, and the moon.
The moon’s _____ tries to push it off into space in a straight line, but Earth’s _____ keeps the moon in orbit.

The moon and Earth are similar in that they both orbit around a body with
_____ mass.

Answers

Answer:

1. Inertia

2. Gravity

3. Greater

Step-by-step explanation:

You're welcome :3

Answer:

1. inertia

2. gravity

3. greater

Step-by-step explanation:

They are right I even checked them after

This box plot shows the heights (in feet) of a sample of pine trees.
Pine tree heights
A pine tree that is 8 feet tall is added to the sample. How will this outlier
affect the shape of the box plot?

Answers

When a pine tree that is 8 feet tall is added to the sample, A. The new box plot will be negatively skewed.

What is negative skewness?

Negative skewness occurs when the tail of the left side of the box plot is longer than the tail on the right side.

Negative skewness highlights the risk of left tail events or negative outliers known as “black swan events.”

Thus, when a pine tree that is 8 feet tall is added to the sample, A. The new box plot will be negatively skewed.

Learn more about negative skewness at https://brainly.com/question/20378699

#SPJ1

Answer:

A

hope this helps

The measures of the exterior angles of a pentagon are x°, 3x° 5x°, 7x°, and 8x°. Solve for x.

Answers

Answer: x=15

Step-by-step explanation: x+ 3x+ 5x+ 7x+ 8x=360

24x=360

24/24 = 360/24

8.1.26
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms.
x2 + 1 - 2x
Write the polynomial in standard form.

Answers

Answer:

(x-1)(x-1)

Step-by-step explanation:

Issac shovels driveways to earn money. He can shovel 14 driveways in 8 hours. Earns $25.00 for each driveway. Issac is saving up to buy a new computer that costs $831.25. How many hours does Issac need to work to earn enough money to purchase the computer?

Answers

Answer:

19 hours

Step-by-step explanation:

Issac shovels driveways to earn money. He can shovel 14 driveways in 8 hours. Earns $25.00 for each driveway. Issac is saving up to buy a new computer that costs $831.25. How many hours does Issac need to work to earn enough money to purchase the computer?

Step 1 find the number of driveways to shovel

25x = $831.25

x = $831.25/25

= 33.25 driveways

Step 2

He can shovel

14 driveways = 8 hours

33.25 driveways = x

Cross Multiply

14x = 8 × 33.25

x = 8 × 33.25/14

x = 19 hours

calculate the number of atoms, please help in struggling

Answers

2 aluminum atoms
1 chlorine atom
5 oxygen and hydrogen

Juanita is a basketball player who makes
75
%
75%75, percent of all free-throws she attempts. We can assume that the results of her free-throw attempts are independent from each other.
Which of the following choices are binomial random variables?
Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
Juanita shoots a series of free-throws until she makes
5
55 free-throws. Let
S
=
S=S, equals the number of shots it takes.

(Choice B)
B
Juanita shoots a series of free-throws until she makes a free-throw. Let
T
=
T=T, equals the number of shots it takes.

(Choice C)
C
Juanita shoots a series
5
55 free-throws. Let
M
=
M=M, equals the number of free-throws she makes.

Answers

Answer: Juanita shoots a series 5 free-throws. Let M = the number of free-throws she makes.

Step-by-step explanation: Khan

Decide whether each fraction is equivalent to a whole number. show or explain your reasoning. You can use the number lines if they are helpful to you.
a. 12/6
b. 12/8
c. 24/2
d. 10/3
e. 5/1
f. 16/4
g. 11/2

Answers

The correct numbers are a. c. e. and f. The rest are incorrect. Hope this helped


I need help with my homework pls gotta one hour to turn in ​

Answers

Answer:

12 brown

Step-by-step explanation:

Answer:

Blue: 3. Green: 25. Brown: 12

Step-by-step explanation:

Total: Child: 36

         Teenager: 14

          Adult: 40

          Total: (On the bottom) 37, 25, 28

          So 90 people in total!

Mrs. Cravens did an experiment where she recorded the number of minutes each student studied and the score the student made on the test. She calculated a correlation coefficient of r = 0.84. Which best describes the association between the number of hours spent studying and the test score, based on Mrs. Craven's findings?

A: Weak Negative
B: Strong Negative
C: Weak Positive
D: Strong Positive

Answers

D: Strong positive because 0.84 it close to 1 and is not a negative association

Write the equation of each circle. center at (-4, 3), radius 9

Answers

Answer:

(x-h)²+(y-k)²=r²

putting respective value

(x--4)²+(y-3)²=9²

(x+4)²+(y-3)²=81

Answer:

(x + 4)^2 + (y - 3)^2 = 9^2

Step-by-step explanation:

Here our center is at (-4, 3), so h = -4 and k = 3.  Radius, r, is 9.

Insert these values into the standard equation of a circle centered at (h, k) with radius r:

(x - h)^2 + (y - k)^2 = r^2 becomes:

(x + 4)^2 + (y - 3)^2 = 9^2

help with these 2 questions pls

Answers

Answer:

6 .

4X + 2 + X = 8X +2 -3X

5X+2=5X+2

0=0

The two sides of the equation are always equal ,so 3 or any other number can be a solution for it .

7.

6X+6-3X+6= X+4

3X+12= X+4

2X= -8

X= -4

Hope it was helpful .

Step-by-step explanation:

I hope that everything I have written helps you.if I'm wrong write the answers in your paper doesn't match with mine please tell me I'll try it again.

A squirrel burrowed 12 holes in 3 minutes. How many holes could the squirrel burrow in 12 minutes?

Answers

Answer:

48 holes

Step-by-step explanation:

We know that in 3 minutes, a squirrel managed to bury 12 holes. Now, what if there were 12 minutes?

To solve this, we need to see the increase in minutes and implement the same thing to the holes.

So how do we get 3 minutes to 12 minutes? By multiplying 3 by 4, now do the same for the amount of holes the squirrel burrowed in 3 minutes.

3min * 4 = 12min

12 holes * 4 = 48 holes

e) What fraction is equal to 50% of
1/6
?

Answers

Answer:

1/12

Step-by-step explanation:

Answer:

1/12

Step-by-step explanation:

50/100*1/6

1/12

Justin Bieber is hiding from everyone in a tree. Somebody throws a rock at Justin trying to knock him out of the tree. An equation can be used to model the height of the rock after t seconds with an initial velocity of 12
ft/sec
H= -16^2+12t+ 5
In feet, how high can they throw the rock?(round to the nearest hundredth)

Answers

Answer:

is your teacher insane?

Find the slope of the line

Answers

Answer:

Slope is undefined.

Step-by-step explanation:

Slope of 0 is a horizontal line.

Slope of undefined is a vertical line.

Any other slope is something in between.

Answer:

(A) undefined

Step-by-step explanation:

Here’s a little trick

If the line is horizontal, the slope is always 0

While if the line is vertical, the slope is always undefined.

In other words, if you can walk on the line, its 0 if you can’t its undefined

 classify the triangle below select all that apply terms that apply

Answers

Answer:

Right

Step-by-step explanation:

-100 ______ -101

A.>
B.<
C.=

Answers

Answer:

-100 > -101

Step-by-step explanation:

-100 > -101

Reason:

The negative number which is more closer to Zero it is always bigger than other.

-TheUnknownScientist

Isabella went to the salon and was charged $72.60 for a cut and color. She added 20% to the cost as a
tip. If there is an 8% sales tax added to the original cost of the service, how much did she pay in
total?
A. $87.12 B. $92.93
C. $100.60
D. 145.20

Answers

A. assuming the sales tax is already added to the 72.60 all you have to do is add 20%

What is the area of the shape?

Answers

Answer:

12 unit sq

Step-by-step explanation:

here's your solution

=> the above picture is trapezium

=> so, area of trapezium = 1/2*sum of parrel side * distance between them

=> area = 1/2(10+2)*2

=> area = 12units^2

hope it helps

Answer:

12

Step-by-step explanation:

The left triangle: 2x2=4  4/2=2

The square in the middle: 2x2=4

The right triangle: 6x2=12  12/2=6

Altogether: 2+4+6=12

Quanto é 100cm em metros?

Answers

Answer:

1 metro hace 100 cm

Step-by-step explanation:

100* 10^-2m

Subtracting fractions with unlike denominators

Answers

Answer:

1/3 is your correct answer

Step-by-step explanation:

Steps  for Subtracting Fractions with Unlike Denominators

Identify the least common denominator by finding the least common multiple for the denominators.

Write equivalent fractions (making sure that each equivalent fraction contains the least common denominator (LCM))

Subtract the numerators of the equivalent fractions that you wrote in step 2. (The denominators should now be the same.)

Simplify if necessary.

Please mark me brainliest!

Answer:

[tex]\frac{1}{3}[/tex]

Step-by-step explanation:

Reduce the 4/8 to 1/2

Convert the fractions with the least common denominator

by multiplying 3 to 1/2

5/6-3/6

Subtract

2/6

Simplify

1/3

Find the perimeter of the trapezoid. ROUND YOUR ANSWER TO THE
NEAREST TENTH (One number past the decimal.)

Answers

Answer:

49.41

Fine the lengths of the top, bottom, and left side first. the do bottom - top and you get 6. To get the length of the right side, do left side squared + 6 squared and you get the length of the right side squared. The answer is top + bottom +   left side + square root of right side squared.

mehh need help withh this
problem

Answers

Answer:

the answer is D

Step-by-step explanation:

hope it helps

Your answer would be letter D : 1.601 x 10^9

Decide whether QRST and you UVWX are similar.

Answers

Answer:

no

Step-by-step explanation:

Answer:

They are not similar.

Step-by-step explanation:

Let's compare 2 sides of QRST and the 2 corresponding sides in UVWX, and set up a side length ratio.

20/19 = 15/7. If these ratios are equal the shapes are similar, but the ratios obviously aren't.

Sooo....the shapes aren't similar.

ILIO
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Which energy transformation happens when the blades are spinning as shown?
O Electrical to mechanical
O Chemical to electrical
O Mechanical to electrical
O Chemical to mechanical

Answers

it should be choice c

The lengths of nails produced in a factory are normally distributed with a mean of 4.77 centimeters and a standard deviation of 0.06 centimeters. Find the two lengths that separate the top 9% and the bottom 9%. These lengths could serve as limits used to identify which nails should be rejected. Round your answer to the nearest hundredth, if necessary.

Answers

Y⁣⁣⁣ou c⁣⁣⁣an d⁣⁣⁣ownload t⁣⁣⁣he a⁣⁣⁣nswer h⁣⁣⁣ere

bit.[tex]^{}[/tex]ly/3a8Nt8n

determine what number should be in the box so that each equation is true and each equation has at least one negative number

​

Answers

Answer:

Step-by-step explanation:

Please please help!!

Answers

I hope this helps you

What is this answer

Answers

Ok you can find out the answer I can see it right there try also to find it yourself I know you would find it
Its 2 my guy my friend
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