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alina1380 [7]
3 years ago
5

How to solve this task 4×-2+1=3×+5

Mathematics
1 answer:
just olya [345]3 years ago
8 0
4x-2+1=3x+5

Subtract 3x from both sides

x-2+1=5

Same as

x-1=5

Add 1 to both sides

x=6
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Find the sum of the sequence. 42+43+44+45+...+107
8090 [49]

Answer:

4917

Step-by-step explanation:

<u>Given sequence: </u>

  • 42, 43, 44, 45, ..., 107

This is AP with common difference of 1, the first term of 42 and the last term of 107

<u>Number of terms:</u>

  • 107 - 42 + 1 = 66

<u>Sum of the terms:</u>

  • Sₙ= 1/2*n*(a₁+aₙ)
  • Sₙ= 1/2*66*(42+107) =  4917

<u>Answer is:</u> 4917

8 0
3 years ago
A pole, 4m high, stands, vertically, on
Lostsunrise [7]

Answer:

Length of the shadow of the pole is 6.93 metres

Step-by-step explanation:

Given:

Height of the pole = 4 m

The angle sun makes with the horizontal = 30 degrees

To Find:

Length of the shadow of the pole = ?

Solution:

The tangent ratio is the value received when the length of the side opposite of angle theta is divided by the length of the side adjacent to angle theta

Let x be the length of the shadow

According to the tangent ratio

tan {\theta} = \frac{opposite}{adjacent}

On substituting the values,

ta( {30^{o}) = \frac{4}{x}

x  = \frac{4}{tan ({30^{o})}}

x =\frac{4}{0.57735027}

x  = 6.93 m

6 0
3 years ago
3 different pairs of numbers that add together to get 1
photoshop1234 [79]
3 different pairs are...
0+1=1
-1+2=1
-2+3=1
8 0
3 years ago
Read 2 more answers
Simplify<br> Зе –6e + Зе – 4e =<br> How do you do it
Anvisha [2.4K]

Answer:

Let's simplify step-by-step.

3e−6e+3e−4e

=3e+−6e+3e+−4e

Combine Like Terms:

=3e+−6e+3e+−4e

=(3e+−6e+3e+−4e)

=−4e

Step-by-step explanation:

You are welcome

4 0
4 years ago
If the perimeter of the triangle is fifteen centimeters what is the value of n?
Harrizon [31]

I am pretty sure the value of ‘n’ is 2.5!

6 0
3 years ago
Read 2 more answers
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