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Naddik [55]
2 years ago
12

50 points helppppppppppppppppppppppppppppppppppppppppppppppp i need it fast

Mathematics
2 answers:
Neko [114]2 years ago
6 0

Answer:

area A = 5.25 cm²

area B = 5.25 cm²

area C = 5.25 cm²

Step-by-step explanation:

area of a triangle = 1/2 x base x height

area of A = 1/2 x 4.2 x 2.5 = 5.25 cm²

area of B = 1/2 x 4.2 x 2.5 = 5.25 cm²

area of C = 1/2 x 4.2 x 2.5 = 5.25 cm²

Triangles A, B and C have the same area as they all have the same measures of base and height.

Lapatulllka [165]2 years ago
5 0

All triangles in this shape have same area as they have same base length and height length.

  • area of triangle: 1/2 * base * height

Here the base is 4.2 cm and height is 2.5 cm for all the given triangles.

As a result, we can say that the area of \triangle A,  \triangle B,  \triangle C are equal.

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One-half of a number,<br> increased by 69 is 74.<br> What is the number?
Klio2033 [76]

Answer:

10

Step-by-step explanation:

let the number be n then half the number is \frac{1}{2} n , so

\frac{1}{2} n + 69 = 74 ( subtract 69 from both sides )

\frac{1}{2} n = 5 ( multiply both sides by 2 to clear the fraction )

n = 10

Thus the number is 10

6 0
2 years ago
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Solve for "x" : 2x + 3x + 4x =36​
Anestetic [448]

Answer:

4

Step-by-step explanation:

2x + 3x + 4x = 36

Evaluate like terms.

9x = 36

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x = 36 ÷ 9

x = 4

7 0
3 years ago
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Solve this equation<br>-2(4-7)+5(4+7)​
gayaneshka [121]

You can simplify this expression with PEMDAS (parentheses, exponents, multiplication/division, addition/subtraction)

Start with the expressions in the parentheses:

4-7=-3

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-2*-3=6

5*11=55

The expression is 6+55 which is 61.

Hope this helps!!

6 0
2 years ago
1/4x+3/4y=1 please solve (linear equation)
stealth61 [152]
Convert this to slope-intercept form

subtract 1/4x, 

3/4y=1-1/4x

then multiply my 4/3

y=4/3-1/3x

y=-1/3x+4/3

4/3 is the y-intercept, so when you're graphing begin with it. Then find another point on the graph according to the slope. Plot point (0,4/3) then plot a point with a y-value 1 less and an x-value 3 more. (slope is sometimes called rise over run because it is a ratio of the change in the y-value divided by the change in the x-value) Plot point (3,1/3). Connect the dots with a ruler and draw a line.
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3 years ago
If c= the number of cars in a parking lot, which algebraic expressions represent the phrase below? 9 more than the number of car
Anestetic [448]
C + 9 because you are adding o mode cars and an expression doesn't have an equal sign (=)
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3 years ago
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