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yawa3891 [41]
3 years ago
8

..................................

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
6 0
<h3>We know that :</h3>
  • a = 6
  • b = 2
  • h = 3

<h3>Asked :</h3>

A = …?

<h3>Solution :</h3>

A = ½ (a + b) × h

A = ½ (6 + 2) × 3

A = ½ (8) × 3

A = 4 × 3

A = <u>12</u> square units.

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An arithmetic sequence has a common difference of 5 and the 3rd term is 15. What is the 5th term?
trapecia [35]

Answer:

an=8n−14

Step-by-step explanation:

for an AP

where

a

1

=

the first term

d

=

the common difference

then we have

a

1

,

(

a

1

+

d

)

,

(

a

1

+

2

d

)

,

...

,

a

1

+

(

(

n

−

1

)

d

)

,

.

.

we are given the third term

10

=

a

1

+

2

d

−

−

(

1

)

and the fifth term

26

=

a

1

+

4

d

−

−

(

2

)

subtract

(

2

)

−

(

1

)

16

=

2

d

⇒

d

=

8

sub into

(

1

)

10

=

a

1

+

2

×

8

⇒

a

1

=

−

6

so the nth term

a

n

=

a

+

(

n

−

1

)

will be

a

n

=

−

6

+

8

(

n

−

1

)

a

n

=

8

n

−

14

3 0
3 years ago
Please help me I will mark you Brainiest please
anyanavicka [17]

Hmmm well may I ask what your doing with the shapes bc um well if you put them shapes in the circle/oval why is it hard? I don’t do this stuff I’m confused...

4 0
3 years ago
Write the inequality shown by the graph.
OLga [1]

Answer:  A

Step-by-step explanation:

The line and dots are closed circle, so B and D would not be the answer.

The line have passed through the point (-6,4) and (0,2); we uses to find the slope.

slope = m = (y2 - y1)/(x2 - x1) = (2 - 4)/(0 - (-6)) = -2 / 6 = -1/3

we plug in slope to the linear equation in form of y = mx + b, where m is the slope, and b is the y- intercept.

y = -1/3x + 2

So the answer is A.

5 0
3 years ago
Can someone help with this question? pretty please! Also I have no idea if it is in the right subject sorry....
Rina8888 [55]

Answer:

I believe it is

1) b

2) a

3) c

Step-by-step explanation:

I hope this helps, and is right

Have a wonderful night!

4 0
3 years ago
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If a triangle has lengths of 27 m and 11 m, check all the possible lengths for the third side.?
Maksim231197 [3]
39 ft is the correct answer gnffj
6 0
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