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3 years ago

I lost my calculator and i really need the answer to this 2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 please help

Mathematics

1 answer:

dalvyx [7]3 years ago

4 0

Answer:

209

Step-by-step explanation:

If you meant to put a 1 before the 2 then it's 210

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1130. 973 to 3 significant number

maxonik [38]

Answer:1130

Step-by-step explanation:

3 0

3 years ago

4 + 3(4 - 2)^2 - 3(3 - 2)^3

Dmitriy789 [7]

PEMDAS

4+3(4-2)^2 - 3(3-2)^3
4+3(2)^2 - 3(1)^3
4+3(4) - 3(1)
4+12-3
16-3
13

The answer is 13

7 0

3 years ago

A family is comparing different car seats. One car seat is designed for a child up to and including 25 lb. Another car seat is d

kari74 [83]

According to the concept of inequality, the interval notation is 0 < x ≤ 30; 15 < x < 40; 30 ≤ x ≤ 85 based on these range the second and third car seats are suitable.

Inequality:

Inequality refers the non equal relation of the sets.

Given,

A family is comparing different car seats. One car seat is designed for a child up to and including 25 lb. Another car seat is designed for a child between 15 lb and 40 lb. A third car seat is designed for a child between 25 lb and 85 lb, inclusive. Model those ranges with compound inequalities.

Here we need to find in which car seats are appropriate for a 35-lb child

In this question, they provided that, there are three car seats are designed as follows:

First, on is the car seat made for children upto 30lb.

Second one is the seat for children between 15lbs and 40lbs and

And the third one is the seat designed for a child between 30 lb and 85 lb

Here we know that, the seat designed for a child upto and including 30 lb would not be suitable for 35 lb child. Because 35lb is more than the 30 lb.

So, now, the seat designed for a child between 30 lb and 85 lb, 30lbs and 85lbs would be suitable as the child is within these weight ranges that is 35lb.

Therefore, the interval notation is written as,

=> 0 < x ≤ 30; 15 < x < 40; 30 ≤ x ≤ 85;

So, the second and third car seats are suitable.

To know more about Inequality here.

brainly.com/question/28823603

#SPJ1

8 0

1 year ago

Write an equation in point slope form for the line that passes through each point with the given slope. (you can press on the ph

Anuta_ua [19.1K]

Answer:

Question 1: Option C: y -6 = 8(x+4) is the correct answer.

Question 2: Option B: y-1=0 is the correct answer.

Step-by-step explanation:

<u>Question 1(In Picture):</u>

Given point is: (-4,6) and

Slope: m = 8

The point-slope form of equation of a line is given by:

$y - y_1 = m(x-x_1)$

Here (x1,y1) are the coordinates of the point from which the line passes. Putting (-4,6) in the equation and slope

$y -6 = 8(x+4)$

Hence,

Option C: y -6 = 8(x+4) is the correct answer.

<u>Question 2:</u>

Given point is: (3,1) and

Slope: m = 0

The point-slope form of equation of a line is given by:

$y - y_1 = m(x-x_1)$

Here (x1,y1) are the coordinates of the point from which the line passes. Putting (-4,6) in the equation and slope

$y -1 = 0(x-3)\\y-1 = 0$

Hence,

Option B: y-1=0 is the correct answer.

7 0

3 years ago

Triangle ABC is isosceles where AC = CB. AC = 6a - 8 and CB = 4a - 2. Find AC.

anastassius [24]

Answer:

Step-by-step explanation:

AC = CB

6a - 8 = 4a - 2

a = 3

6(3) - 8 = 10

AC = 10

3 0

3 years ago