What a terrible question. I'm sorry you have this teacher. I think the answer they are looking for is 42 even though there's that +/- should be in a parenthesis and then you are rounding 6.5² to 42. Hope this helps
Step-by-step explanation:
1. -4
2. 4
3. -15
I first wrote the answer of 2 , 3 and then 1 .
copy it carefully.
you may get confused
Answer:
n = 34.4
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
Step-by-step explanation:
<u>Step 1: Set Up</u>
Let's let our number be set by variable <em>n</em>.
We add 7 to it: n + 7
We then double that entire expression: 2(n + 7)
That expression is equal to 82.8: 2(n + 7) = 82.8
<u>Step 2: Solve for </u><em><u>n</u></em>
- [Division Property of Equality] Divide 2 on both sides: n + 7 = 41.4
- [Subtraction Property of Equality] Subtract 7 on both sides: n = 34.4
∴ Caroline's original number is 34.4.
Answer:
a=√2
Step-by-step explanation:
Given : ΔEGF ≅ ΔHKJ
where ∠G=∠K [right angle]
∠E=∠H=45°
And ∠F=180°-∠E-∠G [By angle sum property]
⇒∠F=180°-45°-90°
⇒∠F=45°=∠J [corresponding parts of two congruent triangles are congruent]
⇒ Both triangles are isosceles right triangles such that
JK=HK=b , EG=GF
and EF=JH
Now JK=HK= EG=GF=3√2
Now GF=3a=3√2
⇒a=√2
(4/9)/(2/3)/(5/6)
First, invert and multiply. / Your problem should look like:

×
Second, invert and multiply. / Your problem should look like:

×

×
Third, apply this rule:

×

. / Your problem should look like:
Fourth, simplify 4 × 3 × 6 to 72. / Your problem should look like:
Fifth, simplify 9 × 2 × 5 to 90. / Your problem should look like:
Sixth, simplify. / Your problem should look like:

Original answer
: 
Answer as decimal: 0.8