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Valentin [98]
3 years ago
7

Nine less than twice a number is 49. What is the number?

Mathematics
1 answer:
ratelena [41]3 years ago
7 0

Answer:

29

Step-by-step explanation:

Assume the number as x

2x - 9 = 49

2x = 58

x = 29

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Let's say we have a triangle with sides called a, b, and c, and that b is the base. Our triangle has a height that we'll call h.
Irina18 [472]

Answer:

16.34 square inches.

Step-by-step explanation:

Given:

Base of triangle, b = 3 inches

Height of triangle, h = 10.89 inches

Question asked:

What is the area of this triangle in square inches?

Round your answer to the nearest hundredths place .

Solution:

As we know,

Area\ of\ triangle =\frac{1}{2} \times base\times height

                           =\frac{1}{2} \times3\times10.89\\\\ =\frac{32.67}{2} \\\\ =16.335

As, we have to find the answer to the nearest hundredths place, hence the area of triangle will be 16.34 square inches.

7 0
3 years ago
Solve by completing the square<br>3x2 + x - 2 = 0​
DIA [1.3K]

Answer:

x = 2/3 or x = -1

Step-by-step explanation by completing the square:

Solve for x:

3 x^2 + x - 2 = 0

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x^2 + x/3 - 2/3 = 0

Add 2/3 to both sides:

x^2 + x/3 = 2/3

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x^2 + x/3 + 1/36 = 25/36

Write the left hand side as a square:

(x + 1/6)^2 = 25/36

Take the square root of both sides:

x + 1/6 = 5/6 or x + 1/6 = -5/6

Subtract 1/6 from both sides:

x = 2/3 or x + 1/6 = -5/6

Subtract 1/6 from both sides:

Answer:  x = 2/3 or x = -1

3 0
3 years ago
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konstantin123 [22]
Correct answer is A.

g - geometric mean
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4 0
3 years ago
HELP DUE TODAY!
olya-2409 [2.1K]

Answer:

25

Step-by-step explanation:

2 + 2+ 2 + 2 = 8

3 + 3 + 3 = 9

4 + 4 = 8

8

8

9

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25

3 0
2 years ago
If f(x)=|x|, sketch f'(x) for -2
Luden [163]

Answer:

17

Step-by-step explanation:

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