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s2008m [1.1K]
3 years ago
15

Pleas help i dont understand

Mathematics
1 answer:
disa [49]3 years ago
6 0

Answer:

<u><em>C. (the yellow one) and A. (the dark blue one)</em></u>

Step-by-step explanation:

<em>Half of 14 is 7. Half of 100 is 50. They are both equivalent because they are both 1 half.</em>

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ANSWER ASAP!! Find the area of a triangle with legs that are: 12 m, 15 m, and 9 m.
Setler79 [48]

Answer:

<h2>54m²</h2>

Step-by-step explanation:

<h3>METHOD 1:</h3>

You can use the Heron's formula:

A=\sqrt{p(p-a)(p-b)(p-c)}

where

<em>p</em><em> - half of perimeter</em>

<em>a, b, c</em><em> - lengths of sides</em>

We have

a=12m;\ b=15m;\ c=9m

Calculate:

p=\dfrac{12+15+9}{2}=\dfrac{36}{2}=18\ (m)\\\\A=\sqrt{18(18-12)+(18-15)(18-9)}\\\\A=\sqrt{(18)(6)(3)(9)}\\\\A=\sqrt{2916}\\\\A=54\ (m^2)

<h3>METHOD 2:</h3>

Let's check that it is not a right triangle.

If the sum of the squares of the two shorter sides is equal to the square of the longest side, then this triangle is rectangular.

We have

9m < 12m

Check:

9^2+12^2=81+144=225\\15^2=225

This is a right trianglr wherew 9m and 12m are legs and 15m is a hypotenuse.

The formula of an area of a right triangle is:

A=\dfrac{ab}{2}

<em>a, b</em><em> - legs</em>

Substitute:

A=\dfrac{(9)(12)}{2}=\dfrac{108}{2}=54\ (m^2)

6 0
3 years ago
Find &lt;_6 if m &lt;_8 = 120 degrees
IceJOKER [234]

Answer:

120 degrees

Step-by-step explanation:

Since p is parallel to q, <6 and <8 are congruent because of corresponding angles.

m<8=m<6

120=m<6

Since m<8 is 120, and the two angles are congruent, the m<6 is also 120 degrees.

3 0
3 years ago
PLEASE HELP ME!!! HELP HELP HELP HURRY HURRY
Sever21 [200]

Answer:

Part A: yes it is a function because every input value (x) produces only one output value (y).

Note: It is still a function if different x values produce the same y value, in this case, x=1 and x=-1 produce the same y value 1, but it is NOT a function if y=1 and y=-1 have the same x value x=1.  

Part B: when x=30: f(30)=17*30+50=560

if means that the cost of renting the truck for 30 hours is 560 dollars.

this help?

3 0
3 years ago
The maximum height reached by the barnacle is _______ m.
Oksanka [162]

Answer:

1

Step-by-step explanation:

5 0
3 years ago
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Linda walked 3/4 of the length of the Tremont Trail. The trail was 3.5 miles long. How far did she walk?
den301095 [7]

Answer:

4.25 miles

Step-by-step explanation:

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