MATHEMATICS MIDDLE SCHOOL

Solve for x:-

x + 65 = 120

Thanks!

Answers

Answer 1
Answer: x + 65 = 120
    -65      -65

x = 55
Answer 2
Answer: To solve for x we will use the INVERSE OPERATION of addition which is subtraction. Lets do it:-

x + 65= 120
x = ?
120 - 65 = x
120 - 65 = 55
x = 55

CHECK OUR WORK:-

x + 65 = 120
x = 55
55 + 65 = ?
55 + 65 = 120
We were RIGHT!!!!

So, x = 55.

Hope I helped ya!! xD

Related Questions

Which percent represents a reasonable probability of rolling a number less than 3?
Yellow cab taxi charges $3.00 flat rate and $0.65 per mile. If Katie has no more than $10 to spend. How many miles can she travel without exceeding her limit?
What total length of ribbon is needed to Line the two long sides of the hat?
I need the answers to the word problems.Can you please list them.Thank You!
√64/169 Evaluate.       IDK

Given rectangle ABCD below,a. Find the measure of the angles labeled below.
b. If the length of AB=3x–21, DC=34, BC=4y+32, and AD=62, find the values of x and y.
c. Find the perimeter and area of rectangle ABCD.

Answers

Answer:

  • (x, y) = (18 1/3, 7 1/2)
  • perimeter = 192
  • area = 2108

Step-by-step explanation:

a) no angles are described or shown

__

b) Opposite sides are the same length, so we have ...

  3x -21 = 34

  3x = 55 . . . . . . . add 21

  x = 55/3 = 18 1/3 . . . . . divide by 3

and

  4y +32 = 62

  4y = 30 . . . . . . . . subtract 32

  y = 15/2 = 7 1/2 . . . . divide by 4

__

c) The perimeter is the sum of the side lengths, so is ...

  P = 2(L+W) = 2(62 +34) = 192 . . . units

The area is the product of adjacent side lengths, so is ...

  A = LW = 62·34 = 2108 . . . square units

What's the property that justifies my 1st step?

Answers

Substraction is a comutative operation 
x + 3x + 4 = 72
4x + 4 = 72
4x = 68
x = 68 / 4
x = 17.

How to change 2.2 into a mixed number

Answers

Change the 0.2 into a fraction 2/10 Add the 2 to 2/10 to get 2 2/10, amixed number. To get a improper fraction, just multiply whole numberby denominator value plus the numerator value to get the improper fraction, which is 2*10+2/10= 22/10 The fraction for 0.625 would be would be 5/8, a proper fraction.

A park charges $7.50 per hour to rent a bike. The table shows the relationship between the number of hours, h, and the total cost, c. With the information in the table, which expression can be used to find c?

Answers

C=7.50h. C represents cost and h represents the amount of hours. The cost per hour is 7.50.

Answer:

let n be no of hours

7.5x n = c

Step-by-step explanation:

As a salesperson, you are paid $50 per week plus $3 per sale. This week you want your pay to be at least $110. What is the minimum number of sales you must make to earn at least $110?

Answers

so 50 per week+3 times number of sales
represent s as number of sales
pay=50+3s
if you want pay to be at least 110 or pay<110 so
110>pay=50+3s
110>50+3s
treat as regular equation: do the saem to both sides so it will stay equal
also isolate the s term

110>50+3s
subtract 50 from both sides
60>3s
divide both sides by 3
20>s
you must make at least 20 sales
20 sales.. 110 minus 50 dollars for a WEEKS pay leaves 60 divided by 3 dollars a sale leaves 20 sales

Find the angle of elevation from the point on the ground 90 feet from the base of a building that is 200 feet tall

Answers

Look\ at\ the\ picture.\n\ntg\alpha=(200)/(90)\n\ntg\alpha=(20)/(9)\n\ntg\alpha=2.222...\n\n\alpha\approx66^o
You didn't say so, but I'm assuming that what you want is the angle of elevation
when you're looking at the top of the building.

Also, since you didn't specify it, we have to assume that you and the building
are on level ground, and we also have to assume that your eye is located at
ground level. In other words, your eye is level with the base of the building.

Now ... The building is perpendicular to the ground.  So the building, the line
on the ground from the building to you, and the line of sight from your eye to
the top of the building, form a right triangle.

The angle we need is the angle located at your eye.  The line along the ground
from the building to you is the side of the triangle that's adjacent to that angle. 
And the building is the side of the triangle that's opposite that angle.

The tangent of the angle is (opposite) / (adjacent) = 200/90 = 2.2222...

Put that number into your calculator, and find the angle whose tangent it is.
(That's called the 'arctangent' of 2.2222, or tan⁻¹(2.2222) .)

The angle is about 65.77 degrees.  (rounded) 
Other Questions
I just need the answer. ( look at the picture )
32546455 rounded to the nearest hundred
1.01 as mixed number in simplest form
An estimate for -93 is.