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saveliy_v [14]
2 years ago
13

I need help with this question ​

Mathematics
1 answer:
Mrrafil [7]2 years ago
7 0
3x-14=4x-36
x=22
okeyyy
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The question is below​
Cloud [144]

Answer:

See below.

Step-by-step explanation:

a.

The first figure has 1 square. The second figure has a column of 2 squares added to the left. The third figure has a column of 3 squares added to the left. Each new figure has a column of squares added to the left containing the same number of squares as the number of the figure.

b.

Figure 10 has 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55 squares.

c.

The formula for adding n positive integers starting at 1 is:

1 + 2 + 3 + ... + n = n(n + 1)/2

For figure 55, n = 55.

n(n + 1)/2 = 55(56)/2 = 1540

d.

Let's use the formula set equal to 190 and solve for n. If n is an integer, then we can.

n(n + 1)/2 = 190

n(n + 1) = 380

We know that 380 = 19 * 20, so n = 19.

Answer: yes

e.

Use the formula above,

S = n(n + 1)/2, where S is the sum.

f.

n(n + 1) = 1478

38 * 39 = 1482

37 * 38 = 1406

3 0
3 years ago
Find f(5) if f(t) = ^6 – 3t – 4.<br> A –6 <br> B –2 <br> C 14 <br> D 6
Lera25 [3.4K]
What they said ^ I was just about to answer, but there’s popped up first lol
8 0
3 years ago
HELP ME WITH THESE TWO PLEASE PLEASE ILL GIVE BRAINLIEST
faltersainse [42]

Answer:

1. C. 28/54

2. A. 5/22

Step-by-step explanation:

1. Simplify each fraction to see which of the four are equal to 4/9.

2. Convert each to a decimal to see which is between 2/11 and 3/11.

6 0
3 years ago
Read 2 more answers
Help on this pleasee
Zina [86]

Answer: 40 degrees

Step-by-step explanation:

4 0
2 years ago
The nth term of the sequence is n^2 + 20 <br> How many terms in the sequence are less than 50
Alex Ar [27]

Answer:

5 terms

Step-by-step explanation:

nth term of the sequence =n^2 + 20

an= n^2 + 20

1st term when n= 1

1^2 + 20= 20

2nd term n= 2

2^2 + 20=24

3rd term when n= 3

3^2 + 20= 29

4th term when n= 4

4^2 + 20= 36

5th term when n= 5

5^2 + 20 =45

6th term when n= 6

6^2 + 20=56

Hence, terms in the sequence are less than 50 are first 5 terms

6 0
3 years ago
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