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Dvinal [7]
3 years ago
9

Three times a number plus 12 minus 5 times the same number is 22. What is the number?​

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0

Answer:3

Explanation: 3x5=15+12=27-5=22

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An equilateral triangle with side length 7 cm is shown in the diagram, work out the area of the triangle.
ElenaW [278]
If a triangle has sides of 7 cm and it is an equilateral you can draw a line right down the middle to form two congruent triangles.

These smaller triangles have a hypotenuse of 7cm and a base of 3.5 cm (7/2)

To work out the height, use Pythagoras’ theorem.

a^2 + b^2 = c^2 where c is the hypotenuse and a and b are the other two sides

7^2 - 3.5^2 = 36.75

Square root answer

= 6.06 cm

That’s the height of the triangle

Area of a triangle is base x height divided by 2

So 7 x 6.06 = 42.43…

/2

= 21.2 cm^2 to one d.p

Hope this helped!
Please mark Brainliest!!
8 0
2 years ago
What is the area of the triangle?<br> 16<br> 10<br> "T<br> 8
Alexxandr [17]

Answer:

40 unit^2.

Step-by-step explanation:

Area = 1/2 * base * altitude

= 1/2 * 8 * 10

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6 0
2 years ago
The formula for a sequence or series used to find any term in that sequence or series
ANTONII [103]

Step-by-step explanation:

Tn = a + (n - 1) d

Where

Tn is the nth term of the sequence

a is the first term of the sequence

n is the number/term of the sequence to be solved

d is the common difference

6 0
3 years ago
A line that passes through the point (4, 2) and has the slope of -3/2
mash [69]
The answer is: y = -3/2 x + 8

Graph:

To find the answer we use the formula;

y-y1 = M1 (x - x1)

y-2 = -3/2 (x-4)

When fully solved: the answer is:
y = -3/2 x + 8

8 0
2 years ago
True or False: On the Mertler’s vacation to Florida, they drove 180 miles in 3 hours before stopping for lunch. After lunch they
natita [175]

Answer:

true

Step-by-step explanation:

because the ratios are both 60 miles in 1 hour

7 0
3 years ago
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