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artcher [175]
3 years ago
12

Write a paragraph explaining how to solve 429 x 35 !

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0
1. lay your numbers out
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0 = 4 + n/5 two step equations​
Serjik [45]

Answer: n= -20?

Step-by-step:

Simplify both sides of the equation

1/5n+4=0

Then subtract 4 from both sides

1/5n + 4 - 4 = 0 - 4

1/5n= -4

Then multiply both sides by 5

5*(1/5n)=5*(-4)

5 0
3 years ago
Read 2 more answers
If it takes 6 hours for a plane to travel 720km with a tail wind and 8 hours to make the return trip with a head wind. Find the
denis-greek [22]

The speed of wind and plane are 105 kmph and 15 kmph respectively.

<u>Solution:</u>

Given, it takes 6 hours for a plane to travel 720 km with a tail wind and 8 hours to make the return trip with a head wind.  

We have to find the air speed of the plane and speed of the wind.

Now, let the speed wind be "a" and speed of aeroplane be "b"

And, we know that, distance = speed x time.

\text { Now, at tail wind } \rightarrow 720=(a+b) \times 6 \rightarrow a+b=\frac{720}{6} \rightarrow a+b=120 \rightarrow(1)

Now at head wind → 720=(a-b) \times 8 \rightarrow a-b=\frac{720}{8} \rightarrow a-b=90 \rightarrow(2)

So, solve (1) and (2) by addition

2a = 210

a = 105

substitute a value in (1) ⇒ 105 + b = 120

⇒ b = 120 – 105 ⇒ b = 15.

Here, relative speed of plane during tail wind is 120 kmph and during head wind is 90 kmph.

Hence, speed of wind and plane are 105 kmph and 15 kmph respectively.

6 0
3 years ago
What is this equation? Solve for X-2/7=5/7
Anna [14]
<span>x−<span>2/7</span></span>=<span>5/<span>7
so this means x = 1</span></span>
5 0
4 years ago
Read 2 more answers
How do I solve for constant rate of change
barxatty [35]

You use the slope formula, (y2-y1/x2-x1)

6 0
3 years ago
For each function, what is the output of the given input? for f(x) = 4x 7, find f(4)
shusha [124]
I hope this helps you




x =4



f (4)= 4.4+7 = 16+7=23



f (4)= 4.4-7=16-7=9
6 0
3 years ago
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