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3 years ago

Sorry I am stupid but I need help

Mathematics

2 answers:

Triss [41]3 years ago

8 0

Answer:

I think its the first option.

nikklg [1K]3 years ago

7 0

I believe the answer to your question is the first choice.

Since we have two sides that are 24 mm that means that the equation needs to have 2(24 mm).

And since we have 4 sides that are 18 mm, it means that the equation needs to have 4(18 mm).

so we get: P= 4(18 mm) + 2(24 mm)

Hope this helped and plz mark as brainliest!

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Reflect triangle stu across line st which of these is a valid reason why the image u will coincide with j

hjlf

Answer:

4. None of the above

Step-by-step explanation:

Reflection is a type of transformation that can be used to change the orientation of a given figure or shape without changing it size and shape.

When triangle STU is reflected across ST, the image U coincides with J because the two are on the opposite side and at the same distance from ST. Therefore, J is like the image of U.

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3 years ago

Tell whether 4/2 and 14/7 form a proportion

sergejj [24]

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4 years ago

Place the indicated product in the proper location on the grid. (5c +2/3 )(5c -2/3 )

asambeis [7]

Answer
25c^2-4/9

Explanation
In this question you are expected to expand (5c+2/3)(5c-2/3)
(5c+2/3)(5c-2/3)=(5c×5c)-(5c×2/3)+(5c×2/3)-(2/3×2/3)
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25c^2-4/9
The expanded form of (5c+2/3)(5c-2/3) is 25c^2-4/9 and this is what the question requires of you to do.

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4 years ago

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Here is a probability scale

xxMikexx [17]

Answer:

a) e

b) c

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3 years ago

A triangle has side lengths of 9 in, 13 in, and 20 in. What is the measurement of this triangle’s largest angle?

zvonat [6]

1. Given any triangle ABC with sides BC=a, AC=b and AB=c, the following are true :

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ii) Given the measures of the sides of a triangle. Then the cosines of any of the angles can be found by the following formula:

$a^{2}=b ^{2}+c ^{2}-2bc(cosA)$

2.

$20^{2}=9 ^{2}+13 ^{2}-2*9*13(cosA)

400=81+169-234(cosA) 150=-234(cosA)

cosA=150/-234= -0.641$

3. m(A) = Arccos(-0.641)≈130°,

4. Remark: We calculate Arccos with a scientific calculator or computer software unless it is one of the well known values, ex Arccos(0.5)=60°, Arccos(-0.5)=120° etc

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4 years ago

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