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pshichka [43]
3 years ago
9

How many triangles can be constructed with side lengths of 7 cm, 10 cm, and 18 cm?

Mathematics
2 answers:
Phoenix [80]3 years ago
5 0

Answer:

a zero

Step-by-step explanation:

it is because it can not be equal to or less then other wise it will not work it has got to a higher and 7+10 is 17 not 18 so a

lora16 [44]3 years ago
3 0
B. Only one can be made but can be rotated to look like different.
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Solve the system using elimination.<br><br> 2x + 3y = 17<br> x + 5y = 19
ale4655 [162]

\left\{\begin{array}{ccc}2x+3y=17\\x+5y=19&|\text{multiply both sides by (-2)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}2x+3y=17\\-2x-10y=-38\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad-7y=-21\qquad\text{divide both sides by (-7)}\\.\qquad\qquad \boxed{y=3}\\\\\\\text{Substitute the value of y to the second equation}\\\\x+5(3)=19\\\\x=15=19\qquad\text{subtract 15 from both sides}\\\\\boxed{x=4}\\\\Answer:\ x=4\ and\ y=3.

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3 years ago
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Alina [70]

Answers:

Slope = 3/4

y intercept = -1/2

================================================

Explanation:

The form y = mx+b is known as slope intercept form

m is the slope and b is the y intercept

Comparing y = (3/4)x - 1/2 to y = mx+b, we see that

m = 3/4

b = -1/2

3 0
3 years ago
Find the area of the parallelogram that has a base of 4m and a height of 5.5m.
Sveta_85 [38]

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22m²

Step-by-step explanation:

Area of parallelogram is simply the base length x height.

In this case, base length = 4m and height = 5.5m

hence,

Area = 4 x 5.5 = 22m²

3 0
3 years ago
Read 2 more answers
8x - 2 + 4x + 10 + 3x + 5 = 180
erik [133]

Answer: 11\frac{2}{15}

Step-by-step explanation:

What you are trying to do is isolate the variable x. For you to do that you have to first simplify the left side of the equation and then you solve for x.

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