Mathematics High School

what is the value of x?

Answers

Answer 1

Answer:

k=10

Step-by-step explanation:

The reason is that we should solve the following equation:

4k+5 + 6k+10 + (180-115) = 180

by doing some basic algebra we get:

10k = 100

thus: k=10

Related Questions

13 The diagram shows a square photo being placed right in the middle of a rectangular frame with an area of (x2 + 10x + 24) cm2. Given the length of the photo is x cm. 2 cm ? ? 2 cm The empty spaces on both sides of the photo have the same length. Find the length of each empty space.

Answers

Answer:

Length of empty space=3cm

Step-by-step explanation:

YOU CAN FIND THE COMPLETE SOLUTION IN THE GIVEN ATTACHMENT

I HOPE IT HELPED YOU

Use the portion of the exponential graph below to answer questions 7-8.

What is the domain?

What is the range?

Answers

Answer:

See below ~

Step-by-step explanation:

Domain = range of x values

Lowest value = -1Highest value = 3Domain ⇒ -1 ≤ x ≤ 3

Range = range of y-values

Lowest value = 6Highest value = 27Range ⇒ 6 ≤ y ≤ 27

In January 2015, the Pew Research Center reported results from one of their surveys. "Asked about whether vaccines for childhood diseases such as measles, mumps, rubella (MMR) and polio should be required or left up to parental choice, 68% of adults say such vaccines should be required while 30% say that parents should be able to decide whether or not to vaccinate their children. "
The following is an excerpt from the press release:
The survey of the general public was conducted using a probability-based sample of the adult population by landline and cellular telephone Aug. 15-25, 2014, with a representative sample of 2,002 adults nationwide. The margin of sampling error for results based on all adults is plus or minus 3. 1 percentage points. What is 95% confidence interval for these findings

Answers

Considering the margin of error, it is found that the 95% confidence interval for the percentage of adults who say vaccines should be required is (64.9%, 71.1%).

What is a confidence interval?

It is given by the sample statistic plus/minus the margin of error.

In this problem, 68% of adults say such vaccines should be required, with a margin of error of 3.1%, hence:

68% - 3.1% = 64.9%.

68% + 3.1% = 71.1%.

The 95% confidence interval for the percentage of adults who say vaccines should be required is (64.9%, 71.1%).

More can be learned about confidence intervals at https://brainly.com/question/25890103

Explain how you would find 2/3 x 12 mentally. (help lol)

Answers

Answer: 8

You just need to multiply the numerator (top number) by the 12

2x12=24

so now its 24/3

24/3 simplified is 8

What is 26.375% written as a decimal number?

Answers

Answer: 263.75

Step-by-step explanation:

because i know

The decimal form of 26.375% is 0.26375.

How to convert percentage into decimal ?

Let, x be a number.

Now, if we want to convert x% to decimal, then we have to divide x by 100.

How to find decimal form of 26.375% ?

To convert the given percentage into decimal, we have to divide the given percentage by 100.

∴ 26.375% = [tex]\frac{26.375}{100}[/tex] = 0.26375

Hence, 26.375% = 0.26375

Learn more about percentage here :

https://brainly.com/question/27408800

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What is the measure of angle x?

Enter your answer in the box.

m∠x=
°

Answers

Answer:

x = 61°

Step-by-step explanation:

x = 180 - (37 + 82)

Angles in a triangle add up to 180°.

x = 180 - 119

x = 61°

round 256.709 to the nearest tenth place

Answers

Answer: 256.7

Step-by-step explanation: the tenth place, (7) is rounded to 7 because when you round the number after the tenth place (7) the number has to be at 5 or greater inorder to change values.

8+4 please help me IM IN A HURRY

Answers

Answer:

Step-by-step explanation:

Just add 4 more to 8 and you get 12

Answer:

Step-by-step explanation:

if you simplify it, it becomes 1+1+1+1+1+1+1+1+1+1+1+1=12

I GOT THIS WRONG!! So what is the answer??

BOTS=BAN/REPORT

TROLL=BAN/REPORT

Answers

Use one of the sets and divide them to find the proportional relationship.

3 / 43.5 = 0.06896

Now since it's not in the answer choices, you round it.

0.06896 rounded to the nearest tenths is 0.7

I’m not sure but I belive that the correct answer was/ is A sorry if you get it wrong

solve the inequality |x-1|+x<=5

Answers

Step-by-step explanation:

1st solution

When x-1 is positive

x-1+x≤5

2x-1≤5

2x≤6

x≤3

x-1≥0

x≥1

Solution: x€[1,3]

2nd solution

When x-1 is negative

-(x-1)+x≤5

-x-1+x≤5

-1≤5

0≤5

x-1<0

x<1

Solution: x€(-infinity, 1)

help pls
I'm not good with this stuff lol

Answers

Answer:
40 square feet

Steps:
Formula for the area of a triangle.
A = B*H/2

Formula for the area of a rectangle.
A = L*W

1. Break up the shape into 1 triangle and 1 rectangle.

2. The length of the rectangle is 8 ft and the width is 3 ft. Plug-in these values into the formula for the area of a rectangle.

A = 8 * 3
A = 24

3. The base of the triangle is 8 ft and the height is 4 ft. Plug-in these values into the formula for the area of a triangle.

A = (8 * 4) / 2
A = 32 / 2
A = 16

4. Now add the two areas together to find the amount of carpet needed.

24 + 16 = 40

Answer:

38 ft²

Step-by-step explanation:

You can take it as combination of two figures, a trapezoid and a triangle.

Trapezoid has bases 12 ft and 8 ft and height 3 ft

Its area is

A = 1/2(8 + 12)(3) = 30 ft²

Triangle has height 4 ft and base 4 ft,

Its area is

A = 1/2(4*4) = 8 ft²

Total area is

30 + 8 = 38 ft²

i dont know this and i think its going to be in our FSA please help THANK YOU.....

Answers

Answer:

You never put a screenshot

Step-by-step explanation:

Pls put screenshot :)

Name a diameter.
8
G
E
A
FG
С
CE
B.
AB
D
BO

Answers

Answer:

Step-by-step explanation:

FG is the only line which goes straight across the circle through the centre

About 50 cane toads were introduced into Australia in 1935 to try to control the population of beetles that destroy sugar cane plants. By 2005, there were an estimated 100,000,000 cane toads in Australia. An exponential function that models the number of female cane toads in Australia t years after 1935 is given by f(t)=50(1.23)t .

a. Write a linear function p that models the number of cane toads in Australia t years after 1935. p(t)=_____
b. Describe the parameters in the exponential function, , in terms of the context of the problem. ____
c. Describe the parameters in the linear function, p , in terms of the context of the problem. ____
Question 4 d. Which model do you think is more appropriate to model the female cane toad population? Use the parameters of the functions to justify your reasoning. Linear or exponential?
Predict the population of female cane toads in Australia in 2000 based on each function. The linear function predicts that there would be ___ female cane toads in 2000. The exponential function predicts that there would be ___ female cane toads in 2000.

Answers

The linear function predicts that there would be 92857146 female cane toads in 2000 while the exponential function predicts that there would be 34898137 female cane toads in 2000.

Part A: The linear model of the number of cane toads

From the question, we have the following points

(t, f(t)) = (0,50) and (70, 100000000)

The linear function is then calculated as:

f(t) = [f(t2) - f(t1)]/[t2 - t1](t - t1) + f(t1)

This gives

f(t) = [100000000 - 50]/[70 - 0](t - 0) + 50

Evaluate

f(t) = 1428570.71t + 50

Hence, the linear function is f(t) = 1428570.71t + 50

Part B: The parameters in the exponential function

The exponential function is given as:

f(t) = 50(1.23)^t

So, the parameters are:

50 represents the initial value1.23 represents the ratet represents the number of years from 1935f(t) represents the number of cane toad in year t

Part C: The parameters in the linear function

The exponential function is calculated as:

f(t) = 1428570.71t + 50

So, the parameters are:

50 represents the initial value1428570.71 represents the ratet represents the number of years from 1935f(t) represents the number of cane toad in year t

Part D: The appropriate model

When the population of an entity is being model, it is best to use the exponential model, because the populations would grow exponentially for some time, and then stop growing at some point

Hence, the more appropriate model is the exponential model.

Part E: The number of female cane toads in 2000

The year 2000 is 65 years from 1935.

So, we have:

t = 65

For the exponential model, we have:

f(t) = 50(1.23)^t

The equation becomes

f(65) = 50(1.23)^65

Evaluate

f(65) = 34898137

For the linear function, we have:

f(t) = 1428570.71t + 50

The equation becomes

f(65) = 1428570.71 * 65 + 50

Evaluate

f(65) = 92857146

This means that. there would be 34898137 female cane toads in 2000 according to the exponential function.

Read more about linear and exponential functions at:

https://brainly.com/question/725335

Some of the dimensions of a square pyramid are shown in the diagram. The height of the pyramid is 7.5 meters.

square pyramid

What is the volume of the square pyramid in cubic meters?

Question 8 options:

40 m3

120 m3

360 m3

60 m3

DIGRAM BELOW

Answers

Answer:

40 m^3.

Step-by-step explanation:

Volume = 1/3 * 4^2 * 7.5

= 40 m^3.

Mya and Ashley are buying tickets to the art show. Adult
tickets cost $3 more than the student tickets. Mya buys 7
tickets and 6 adult tickets. Ashley buys 15 student tickets and
1 adult ticket. They both spend the same amount of money
on their tickets. What is the price of one adult ticket?

Answers

Answer:

Step-by-step explanation:

a: adult tickets

s: student tickets

Mya: 7s + 6(3+s)

Ashley: 15s + 1(3+s)

Mya: 7s + 6(3+s) –> 7s + 18 +6s –> 13s +18

Ashley: 15s + 1(3+s) –> 15s + 3 + s –> 16s +3

13s + 18 = 16s +3

15 = 3s, divide 3 from both sides so s = 5

so students tickets cost $5

since adult tickets cost $3 more than student tickets:

($3 + $5) = $8 for an adult ticket.

Answer:

the answer is $8

Step-by-step explanation:

Pls give ana brainiliest she deserves it.:)

Somebody pls help! Im really confused and this is due soon!!!

Answers

I think it’s 28 sorry if it’s wrong

if the equation of a circle is x^2+y^2-3x-y-13/2=0, find the length of the diameter of the circle

Answers

Answer:

x² + y² - 3x - y - 13/2 = 0

Step-by-step explanation:

I think thats the answer if it is right pls mark me as brainliest and learn well

Solve using the Elimination Method
5x + y = 4
6x - y = 7

Answers

Answer:

x=1,y=-1

Step-by-step explanation:

To use the elimination method, we make the coefficient of y the same:

But they are already the same just with different signs.

So we add the 2 equations to make equation 3:

5x + y = 4

+ + = +

6x - y = 7

11x = 11

Solve for x:

x = 1

Substitute the value of x into either equation 1 or 2 to find y:

I chose 1:

5(1)+y=4

5+y=4

y=4-5

y=-1

Our answer is x=1,y=-1

Substituting these values into equation 2 verifies our answer

find the lateral area and surface area of each prism. please show your work.

Answers

I think the lateral area is based on the surface area of each prism that make up for it

[tex]\stackrel{\textit{\Large Lateral Area}}{\stackrel{\textit{area of the 6 sides}}{6(12)(15)}\implies 1080} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ p=\stackrel{6\times 12}{72}\\ a=10.39 \end{cases}\implies A=\cfrac{1}{2}(10.39)(72)\implies 374.04 \\\\[-0.35em] ~\dotfill[/tex]

[tex]\stackrel{\textit{\Large Areas}}{\stackrel{lateral}{1080}~~ + ~~\stackrel{two~hexagons}{2(374.04)}}\implies 1828.08\qquad \leftarrow \textit{total surface area}[/tex]

A quadrilateral has two angles that measure 222° and 81°. The other two angles are in a ratio of 6:13. What are the measures of those two angles?

Answers

[tex]\sf\huge\underline{\star Solution:-}[/tex]

[tex]\rightarrow[/tex] Ratio of two angles are 6:13.

So, let the one angle be [tex]\sf{6x}[/tex] and another be [tex]\sf{13x.}[/tex]

As we know that,

Sum of all interior angles of a quadrilateral = [tex]\sf\pink{360°.}[/tex]

So let's sum up the given angles,

[tex]\rightarrow[/tex] [tex]\sf{222°+81°+6x+13x \:=\: 360°}[/tex]

[tex]\rightarrow[/tex] [tex]\sf{303+19x \:=\: 360°}[/tex]

[tex]\rightarrow[/tex] [tex]\sf{19x \:=\: 360-303}[/tex]

[tex]\rightarrow[/tex] [tex]\sf{19x \:=\: 57}[/tex]

[tex]\rightarrow[/tex] [tex]\sf{x \:=\: \frac{19}{57}}[/tex]

[tex]\rightarrow[/tex] [tex]\sf{x \:=\: 3}[/tex]

Hence, [tex]\sf{x \:=\: 3}[/tex]

So, First angle [tex]\sf{= \:6x\: = \:6×3 \:=}[/tex] [tex]\sf\purple{18°.}[/tex]

Second angle [tex]\sf{= \:13x\: = \:13×3 \:=}[/tex] [tex]\sf\purple{39°.}[/tex]

_________________________________

Hope it helps you:)

10. A museum gift shop sells hats with embroidered logos of the museum.
The hats are available in small, medium, and large sizes. They are available
in the colors red and green.
Make a tree diagram or a table to represent all possible varieties of hats sold at
the museum.

Answers

This is a tree diagram of the possibilities listed. Hope this helps!

Find the perimeter. Do not use decimals, units of measurement (ex. ft, mi,
yd, etc.) or commas in your answer.

Answers

76 yd

This is very simple

Perimeter is the sum of all the outer sides

22yd + 22yd + 16yd +16yd

This will give you