i need help with this and how you got it please! 10 points

I Need Help With This And How You Got It Please! 10 Points

Answers

Answer 1

Answer:

B, x=40 is the right answer

Step-by-step explanation:

DAC is one half of the right angle and CAB is another half. So, you know that since a right angle is 90 degrees, DAC + CAB must equal 90.

They have given you equations for both angles, so now its just a matter of rearranging and solving for x.

DAC = x

CAB = 2x - 30

DAC + CAB = 90

Using the equations above, we can come up with this final equation:

x + 2x - 30 = 90

If we add the x together:

3x - 30 = 90

If we move the 30 to the other side by adding it to 90

3x = 90 + 30

3x = 120

If we divide 120 by 3:

x= 40

Therefore, the answer is B

Hope this helped : )


Related Questions

yeahh please give the right answer

Answers

Answer:

21

Step-by-step explanation:

The largest x could be is

8+12 > x

21 >x

X must be less than 21

Answer:

a)

Step-by-step explanation:

I use logic and my eyes when i answer these so for sure 8 is not x because x is OBVIOUSLY longer than the side with 8 as its measurement

can someone help me expand this polynominal?

Answers

Answer:

Step-by-step explanation:

( 5 - x) ( 4-x )

=5(4-x)-x(4-x)

=20-5x-4x+x^2

=x^2-9x+20

hope it helps...

。☆✼★ ━━━━━━━━━━━━━━  ☾  

Multiply first two values in brackets:

5 x 4 = 20

Multiply the outside values in the brackets:

-x * 5 = -5x

Multiply the inside terms:

-x * 4 = -4x

Multiply the last terms:

-x * -x = x^2

Place all values together:

x^2 - 5x - 4x + 20

Simplify it:

x^2 -9x + 20

Have A Nice Day ❤    

Stay Brainly! ヅ    

- Ally ✧    

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work out the area of the triangle to 1 decimal place. 10cm, 13cm, 105 degrees

Answers

Answer:

Area = 62.8 cm²

Step-by-step explanation:

In the figure attached a triangle has been given with two sides and included angle between them.

Measures of two sides are 10 cm and 13 cm.

Measure of included angle = 105°

Since area of a triangle with two sides (a and b) and included angle (θ) is,

[tex]\text{Area}=\frac{a.b.\text{sin}\theta}{2}[/tex]

        = [tex]\frac{10\times13\times \text{sin(105)}}{2}[/tex]

       = 62.79

       ≈ 62.8 cm²

Therefore area of the given triangle is 62.8 cm²

3x - 8y = 1
6x + 5y = 12

Answers

Answer:

1/2

Step-by-step explanation:

What is the equation of the line shown

Answers

Answer:

the answer is y = x-5

find an equation of cosine function with maximum of 7, minimum of -7 and period of 7

Answers

Answer:   [tex]\bold{y=7cos\bigg(\dfrac{2\pi}{7}x\bigg)}[/tex]

Step-by-step explanation:

y = A cos (Bx - C) + D

A = amplitude (vertical stretch)Period = 2π/BC/B = phase shiftD = vertical shift

The minimum is -7 and the max is 7 so A = 7 and D = 0

Period is 7.  Since P = 2π/B then 7 = 2π/B --> B = 2π/7

Nothing was stated about a phase shift so you can use any value for C. I chose C = 0.

Now, input A = 7, B = 2π/7, C = 0, & D = 0 into the equation

[tex]y=7\cos\bigg(\dfrac{2\pi}{7}x-0\bigg)+0\\\\\\\text{Simplify}:\\y=7\cos\bigg(\dfrac{2\pi}{7}x\bigg)[/tex]

Use the grouping method to factor the polynomial below completely.
x3 + 2x2 + 3x + 6
A. (x2 + 2)(x+3)
B. (x2 + 3)(x+3)
C. (x2 + 2)(x + 2)
D. (x + 3)(+ 2)

Answers

Answer:

D. (x2 + 3)(x+ 2)

Step-by-step explanation:

When x3 + 2x2 + 3x + 6 is grouped, it is simplified to (x2 + 3)(x + 2).

URGENT
classify the following triangle check all that apply.

A. obtuse
B.Isosceles
C.Scalene
D.Acute
E.Right
F.Equilateral​

Answers

Answer:

Scalene, Acute

Step-by-step explanation:

Scalene because each side has a different length

obtuse because one angle is more than 90°

100 POINTS!!!

9. A rectangle is located on a coordinate plane. If the ordered pair (t, u) represents a vertex of this rectangle, which algebraic representation describes the effect of translating the rectangle 8 units up and 3 units left? (t, u) → (t + 3, u + 8) (t, u) → (t – 3, u + 8) (t, u) → (-t – 3, u + 8) (t, u) → (t + 8, u – 3)

Answers

Up is the y value and left is the x value.

In the point ( t,u) t is the x value and u is the y value.

Moving to the left, you subtract the value and moving up you add the value.

The answer would be (t, u) → (-t – 3, u + 8)

Answer:

above me  she/he right!!

Step-by-step explanation:

In the volume formula, V = Bh, what does the capital B stand for?


base

area of the base

two times the base

perimeter of the basea

Answers

Base, I don’t know if that’s correct so better take another person to answer

Answer:

B. Area of the Base

Step-by-step explanation:

Hope this helps you guys :D

STRUCTURE Write the ratio of the side lengths of the two cubes described in simplest form.
The volumes of the two cubes are 270x cubic inches and 32x2 cubic inches.
The surface areas of the two cubes are 6x4 square feet and 6(x + 1) square feet.

Answers

The answer is 24 because u have multiple it

a)
Factorise fully
2p - 4pq
b)
Factorise
r? - 100
c)
Factorise k2 + 13k + 30
d)
Solve
K + 13k + 30 = 0

Answers

a) 2p(1-2q)

b) dunno

c) k(2+13+30)

d) I’m not sure

Answer:

a) 2p(1-2q)

b) don't know what you mean by r?

c) (k+3)(k+10) using the S, P, N method

d) k²+13k+30=0

(I think you meant to write k squared as it makes more sense)

k=2

Simplify (2x-3)(2x-2)

Answers

Answer:

We get the final answer of -4x + 6

Step-by-step explanation:

Let's simplify step-by-step.

2x −3(2x−2)

Distribute:

= 2x+ (−3)(2x) + (−3)(−2)

= 2x+ −6x + 6

Combine Like Terms:

= 2x + −6x + 6

= (2x + −6x) + (6)

= -4x + 6


Is the number even or odd?
2018−2017+2016−2015 + . . . +2–1

Answers

Answer:

It is the odd number 1009

Step-by-step explanation:

Notice that this problem involves the addition of a number "1" per consecutive pair (a number minus the integer that immediately precedes it), so it adds "1" (one) every couple of consecutive numbers.

2018 - 2017 = 1

2016 - 2015 = 1

...

4- 3 = 1

2 - 1 = 1

That means it is the addition of 2018/2 = 1009 numbers "1". This clearly results on the number 1009, which is an odd number.

How do you write this number using digits?

five hundred six thousand eight hundred twenty-seven

Answers

Answer: 506,827

Explanation: Google

Please answer CORRECTLY !!!!!! Will mark BRIANLIEST !!!!!!

Answers

Answer:

you should drag to x axis #3

I need the answer to this question.

Thanks

Answers

B is the answer because section p is increasing

Which of the following exponential regression equation best fits the data shown below. Please help ASAP. ☺️

Answers

Answer:

Option D [[tex]y=6.61\,*\,1.55^x[/tex]] in the list of possible answers

Step-by-step explanation:

For this problem you are supposed to use a calculator that allows you to do an exponential regression. There are many tools that can help you with that, depending on what your instructors has assigned for your class.

I am showing you the results of a graphing tool I use, and which after entering the x-values and the y-values in independent "List" forms, when I request the exponential regression to fit the data, I get what you can see in the attached image.

Notice that the exponential of best fit with my calculator comes in the form:

[tex]y=A\,e^{k\, x}[/tex]

with optimized parameters:

[tex]A \approx 6.6114\,\,\,and\,\,\, k=0.4378321[/tex]

Notice as well that since:

[tex]e^{0.4378321} \approx 1.5490[/tex]

the exponential best fit can also be written:

[tex]y=6.611403\,\,*\,e^{0.4378321\, x}=6.611403\,*\,1.549^{\,x}[/tex]

and this expression is very close to the last option shown in your list of possible answers

is 10.97846727460 rational or irrational

Answers

Answer:

Step-by-step explanation:

Answer:

Rational

Step-by-step explanation:

Because the decimal places stop, it is rational. Remember, an Irrational number is non-repeating and non-terminating. Since the number terminates, it is rational

What is the square route of 25

Answers

Answer:

The answer to your question is 5.

Step-by-step explanation:

Select the correct dates.
The table lists some daily balances in Dora's savings account.

Answers

Answer:

May 10th she had the most debt and may 20 she had the most in her bank

Answer:

may 10 and may 20

Step-by-step explanation:

Yuron is sketching a scale drawing of a famous painting. The painting is 54 inches wide and 72 inches long. He used a scale factor of Two-thirds to make his sketch. How many inches wide is Yuron’s sketch?

Answers

Answer:

Yuron's painting is 36 inches wide.

Step-by-step explanation:

Given that Yuron is sketching a scale drawing of a famous painting which is 54 inches wide and 72 inches long. He used a scale factor of [tex]\frac{2}{3}[/tex] to make his sketch.

We are given to find the width of Yuron’s sketch.

Let, w and w' represents the width of the famous painting and  Yuron's painting.

Then, w = 54 inches,  w' = ?

We know that the scale factor is defined by

[tex]S=\frac{Length of a side of a dilated figure}{Length of the corresponding side of the original figure}[/tex]

Therefore, we have

[tex]\frac{2}{3} =\frac{Width og Yuron's painting}{Width of the famous painting}[/tex]

[tex]\frac{2}{3} = \frac{w}{w}[/tex]

[tex]\frac{2}{3}=\frac{w}{54}[/tex]

[tex]\frac{2}{3}=\frac{2*54}{3}[/tex]

[tex]w= 36[/tex]

Thus,  Yuron's painting is 36 inches wide.

Answer:

Yuron's painting is 36 inches wide.

Step-by-step explanation:

what will be the another acute angle of right angle triangle is its one acute angle is 30 degree​

Answers

Answer:

60°

Step-by-step explanation:

90+30=120°

180-120=60°

Step-by-step explanation:

all sides of a triangle = 180

all sides of a triangle = 180

So 2 angle i.e. 90° (right angle) and 30° (given) and let third angle be x

so equation forms like

180 = 90+30+x

180 =120+x

180-120 =x

60 =x

SO THE ANSWER WILL BE 60°

HOPE IT WILL HELP YOU ☺️

whats 2x-15=20?
best answer plez

Answers

Answer:

x= 17.5

Step-by-step explanation:

add 15 on both sides

divide 2 on both sides after

After a party, 14 of a pan of lasagna is left over. If the leftover lasagna is divided equally among 4 containers, how much leftover lasagna will be in each container?

Answers

There will be 3 1/2 leftover lasagna in each container.

14/4=3.5

Answer: Once spliting and sharing the lasagna, there will be 3 1/2 or 3.5 left. :)

Issac runs 16 1/4 miles each week. He runs 6 3/8 miles on Sunday and 4 2/5 miles on Tuesday. How many miles does he run on Thursday if it is the only other day that he runs that week?

Answers

Answer:

5.225 miles on thursday or 209/40

Step-by-step explanation:

if we make it into decimals he runs 16.25 miles every week. on sunday he runs 6.375 miles and on tuesday it is 4.4. we are going to add what he’s run so far so

6.375 + 4.4 = 10.775 and then we will subtract that from 16.25 to get 5.225 left for thursday

While in the library, 44 students checked out animal books, 28 students checked out mystery books, and twice as many students who checked out mystery books checked out joke books. Which of the following is a good estimation of the total number of books checked out?

Answers

Answer:

128

Step-by-step explanation:

44+28+(28x2)=128

Helppppppppp pleaseeeeeeeeeee

Answers

Answer:

ok

Step-by-step explanation:

Sofia surveyed students at her school
about the language they speak at home.
She got these results. Write decimal
equivalents for the fractions and order
the numbers from greatest to least.
english:1/4
Ukrainian: 1/20
Vietnamese:0.02
French: 1/10
Chinese:0.02
other: 0.06





Answers

Answer:

English,French,Vietnamese,Chinese,Ukrainian,other

Step-by-step explanation:

so basically the question is asking for us to convert the fractions into decimals and then, order the them from greatest to least

Q:how do you convert a fraction into a decimal?

A: numerator divided by denominator for example if you had to convert 7/9 into a decimal you would do 7 divided by 9!!!

English:1/4 is equivalent to 0.25

Ukrainian:1/20 is equivalent to 0.05

Vietnamese:0.02 is already in decimal form

French:1/10 is equivalent to 0.1

Chinese:0.02 is already in decimal form

Other:0.06 is already in decimal form

Now we got all the fractions converted into decimals

0.25,0.05,0.02,0.1,0.02,0.06

Now we have to put these number from greatest to least

Q:how do we put it in greatest to least?

A: if there are more zeros in the place value its more likely to be a small number for example 0.06 is smaller than 0.3

0.25 is the greatest

0.1 is the second greatest

0.02 is the third greatest

0.02 is the third greatest

0.05 is the 4th greatest

0.06 is the 5th greatest

Now we got them from greatest to least so we match the decimal numbers to the language

Starting from greatest to least is: English,French,Vietnamese,Chinese,Ukrainian,other

pls mark me brainliest

Please help! Correct answer only please! I need to finish this assignment by today.

On a residential single lane road there was a wreck that backed up traffic for 4 miles. 70% of the traffic consists of cars and 30% of the traffic consists of trucks. the average distance between vehicles is 3 feet. the average length of a car is 13.5 feet and the average length of a truck is 20 feet. estimate how many vehicles are stuck in the traffic jam.

(hint: there are 5280 feet in 1 mile)


A) 276

B) 896

C) 1172

D) 1412

Answers

c)1172 is the answer :)
I think that the answer is c
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