MATHEMATICS HIGH SCHOOL

The sum of 15 and two times a number 29 what is the the number?

Answers

Answer 1
Answer:

Let the number = x

It would be: 2x+15 = 29

2x = 14

x = 7

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Many of the constructions that the Greeks thought impossible were later proven impossible in the 18th and 19th centuries.A. True B. False
Find the distance between each pair of points.a. √58b. √7c. 5d. √5
Which of the following formulas, when evaluated using rational values for the variables, will result in an irrational number?A. the formula for the area of a circle B. the formula for the area of a trapezoid C. the formula for the area of a triangle D. the formula for the area of a rectangle

I really need help on all of them, I will give out brainliest to one answer and ten points to both

Answers

Answer:

1. 1/2, 2. 2, 3. 1/-3, 4. -2

Step-by-step explanation:

1) I know that the equation for slope is y2-y1/x2-x1. For number one I first found two points of the graph which is (0,3) and (2,4) (not sure if I see it correctly, its kind of blurry). I decided that (0,3) would be my y1 and x1 and (2,4) will be my y2 and x2. I later plugged the number in the equation and got 4-3/2-0 which the answer turns out to be 1/2.

2) For the rest of the questions it is kinda the same business as question 1. For question two I chose two points out of the table which wrer (-1, -12) and (1,-8) and plugged them into the equation and got -8-(-12)/1-(-1) which the answer turns out to be 2.

3) similar to question 2. The two points(2,-6) and (-4,-3) are given to you. so I plugged them in again and got -3-(-6)/-4-2 which the answer turns out to be 3/-6 into 1/-3.

4) Same with question 1 find two points of the graph. I chose (0,3) and (1,1) (again might not be accurate it's kind of blurry) I plugged them into the equation again and got 1-3/1-0 which equals -2.

Just always remember y2-y1/x2-x1=m is the equation for slope.

(m is the variable for slope)

Hoped this helped you : )

Find correct two decimal places, the radius of the circle with the given circumference: 35cm

Answers

C=2 \pi r
C - circumference, r - radius

C=35 \ [cm] \n \n35=2 \pi r \nr=(35)/(2 \pi) \nr=(17.5)/(\pi) \n\boxed{r \approx 5.57 \ [cm]}
C=2\pi r=35\n2\pi r=35\nr=(35)/(2\pi)\approx5.57\text{ cm}

8^x = (1/2)^(x-1)
Solve for x

Answers

I will help you with this one before giving you a helpful tool
1/4

The tool is this website: Mathway; Plug in a question and choose what you want the website to do and boom, gives you answers and if you sign up it will show you steps if you have a teacher who wants work shown

Answer:

I think this the answer 1/4

Step-by-step explanation:

On average, it takes 4.75 hours to run a marathon. How many days will it take to run 100 marathons?

Answers

Answer:

475 hours

Step-by-step explanation:
4.75*100=475...........

Which of the following shows the polynomial below written in descending order?4x2 - x + 8x6 + 3 + 2x10

A. 2x10 + 8x6 + 4x2 - x + 3
B. 8x6 + 4x2 + 3 + 2x10 - x
C. 3 + 2x10 + 8x6 + 4x2 - x
D. 3 - x + 2x10 + 8x6 + 4x2

Answers

The correct awnser should be A cause for them to be decending the biggest variable goes first and then works its way down to the number without and variable.


A is the correct awnser
A indeed is the correct answer

How to factor 16x²-72xy+81y²

Answers

16x^2-72xy+81y^2=(4x)^2-2\cdot4x\cdot9y+(9y)^2=(4x-9y)^2\n\n=(4x-9y)(4x-9y)\n\n\n\n(a-b)^2=a^2-2ab+b^2
use the perfect square trinomial method. since 16x² is a perfect square and so is 81y² your answer would be (4x-9y)² when u multiply that out it will give u 16x²-72xy+81y²
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