All categories

3 years ago

ADDITION OF INTEGERS 21) 2+ 6+-6

Mathematics

2 answers:

Irina18 [472]3 years ago

5 0

Answer:

Step-by-step explanation:

2 + 6 - 6

8 - 6

2 would be the answer

JulsSmile [24]3 years ago

4 0

The answer would be 2. this is because you add 2 and 6 for the sum of 8. then you add that by -6. this comes out to a positive 2.

You might be interested in

A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the

GarryVolchara [31]

The bottom of the ladder is 10.5 feet away from the wall

Step-by-step explanation:

The given scenario forms a right triangle.

Where

The length of ladder will be the hypotenuse

The wall on which the window is situated will ebt he perpendicular and

The distance between the foot of ladder and the wall will be the base

So,

Hypotenuse = H = 20 foot

Perpendicular = P = 17 feet

Base = B = ?

Using the Pythagoras theorem

$H^2=P^2+B^2\\(20)^2=(17)^2+B^2\\400=289+B^2\\400-289=B^2\\B^2=111\\Taking\ square\ root\ on\ both\ sides\\\sqrt{B^2}=\sqrt{111}\\B=10.53\\Rounding\ off\ to\ the\ nearest\ tenth\\B=10.5$

The bottom of the ladder is 10.5 feet away from the wall

Keywords: Triangle, Pythagoras Theorem

Learn more about Pythagoras theorem at:

#LearnwithBrainly

8 0

3 years ago

Please help me please please please help

devlian [24]

I wouldn’t really know, sorry... just commenting for more answers

6 0

2 years ago

The distance from the earth to the moon is 3.84 x 105 km

Anarel [89]

Part (a)

<h3>Answer: $3.84 \times 10^8 \text{ meters}$ </h3>

---------------------

Explanation:

Multiply by 1000 to go from km to meters.

This is because 1000 m = 1 km.

Multiplying by 1000 in scientific notation means we add 3 to the exponent 5. The 3 is because 1000 = 10^3.

So the $3.84 \times 10^5 \text{ km}$ becomes $3.84 \times 10^8 \text{ meters}$

===========================================================

Part (b)

Answer in standard form: 960,000 seconds

Answer in scientific notation: $9.6\times10^{5} \text{ seconds}$

---------------------

Work Shown:

$\text{distance} = \text{rate}*\text{time}\\\\\text{time} = \frac{\text{distance}}{\text{time}}\\\\\text{time} = \frac{3.84 \times 10^8 \text{ meters}}{400 \ \text{ m}/\text{s}}\\\\\text{time} = \frac{3.84 \times 10^8}{4 \times 10^2} \text{ seconds}\\\\\text{time} = \frac{3.84}{4}*\frac{10^{8}}{10^2} \text{ seconds}\\\\\text{time} = 0.96 \times 10^{8-2} \text{ seconds}\\\\\text{time} = 0.96\times 10^{6} \text{ seconds}\\\\$

$\text{time} = (9.6\times10^{-1})\times10^{6} \text{ seconds}\\\\\text{time} = 9.6\times(10^{-1}*10^{6}) \text{ seconds}\\\\\text{time} = 9.6\times10^{-1+6} \text{ seconds}\\\\\text{time} = 9.6\times10^{5} \text{ seconds}\\\\\text{time} = 960,000 \text{ seconds}\\\\$

To go from the scientific notation to standard form, move the decimal point 5 spaces to the right. The 5 is from the exponent.

3 0

2 years ago

7n-22 is more than or equal to 64<br><br> what is n

andriy [413]

7n-22 ≥ 64

1. Move constant to the right.

7n ≥ 64 + 22

2. Combine like terms.

7n ≥ 86

3. Divide 7n by 7 to get n alone.

n ≥ 86

4. Divide 86 by 7.

n ≥ 86 / 7 OR n ≥ 12.29

8 0

4 years ago

4. Explain the difference between (-5)² and<br>-5²

blsea [12.9K]

Answer:

the first one you have is a negative and 5-5-5-5-5

then same for other but oppoiste

Step-by-step explanation:

7 0

4 years ago