Answer:
1⅞ - 1½ ≈ ½
Step-by-step explanation:
Estimation is mental arithmetic. Practice until you can do this in your head.
Here's one way to estimate with mxed numbers.
Step 1. Separate into whole number and fractional parts
1⅞ - 1½ = 1 + ⅞ - 1 - ½
Step 2. Solve the whole number parts
1 - 1 = 0
Step 3. Solve the fraction parts by estimating.
We will round to the nearest ½, so we should round up a number greater than ¾.
(a) ⅞ is greater than ⁶/₈ (¾), so we round it up to ⁸/₈:
⅞ - ½ ≈ ⁸/₈ - ½
(b) Convert each fraction to a common denominator.
We can write ⁸/₈ as ²/₂
⁸/₈ - ½ = ²/₂ - ½
(c) Solve the fraction part
²/₂ - ½ = ½
Step 4. Combine the whole and fraction parts
0 + ½ = ½
So, 1⅞ - 1½ ≈ ½
The answer would be -112.
You are adding -4 to the previous term so all you have to do is...
28x4 the put the negative sign so the answer -112
The submarine is 5 feet below the water surface.
-280+55(5)=-5
Does this have certain answers?
The approximate value of x will be approximately equal to 3.4
<h3>Area of triangle and circle</h3>
The formula for calculating area of rectangle is expressed as:
A = lw
- l is the length
- w is the width
Ar = (3x-1)(x+2)
Ar = 3x^2+6x-x-2
Ar = 3x^2 + 5x - 2
For the circle
Ac = πr²
Ac = 3.14(x-3)²
Ac = 3.14(x²-6x+9)
Ac = 3.14x² - 18.84x + 28.26
If the area are equal;
3x² + 5x - 2 = 3.14x² - 18.84x + 28.26
3.14x² - 3x² - 5x - 18.84x + 30.26 = 0
0.14x²-23.84x+30.26 = 0
On factorizing the equation, the approximate value of x will be approximately equal to 3.4
Learn more on area of rectangle here; brainly.com/question/25292087
