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scoundrel [369]
3 years ago
12

Evaluate the expression 7^2/ x^2 - 2 for x = 3

Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0

Answer:

7

Step-by-step explanation:

7²/x²-2 when x=3

49/3²-2

49/9-2

49/7

answer=7

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Please help, my score is 89 I have to get to 90 this question is important!
White raven [17]

Answer:

40.4

Step-by-step explanation:

Triangle TUV is similar to triangle XYZ.

Notice the order in which TUV and XYZ are written.

Angles are corresponding to angles in the same position in the names.

<T corresponds to <X.

<U corresponds to <Y.

<V corresponds to <Z.

In similar triangles, corresponding angles are congruent.

<T is congruent to <X.

<U is congruent to <Y.

<V is congruent to <Z.

m<T = m<X = 63.1°

m<U = m<Y

m<V = m<Z = 76.5°

m<X + m<Y + m<Z = 180°

63.1° + m<Y + 76.5° = 180°

m<Y + 139.6° = 180°

m<Y = 40.4°

3 0
3 years ago
Find the area of △ABC with side lengths b = 6 and c = 17, and included angle A = 135∘. Round your answer to the nearest tenth.
Levart [38]

Answer:

A=36.1\ units^2

Step-by-step explanation:

we know that

The area of a triangle applying the law of sines is given by the formula

A=\frac{1}{2}(b)(c)sin(A)

where

A is the included angle between the sides b and c

substitute the given values

A=\frac{1}{2}(6)(17)sin(135^o)=36.1\ units^2

4 0
3 years ago
A recipe calls for 1 1/2 cups of flour, 3/4 cup of white sugar, and 1/8 cup of brown sugar. Which of the following mixing bowls
Lady_Fox [76]

Answer:

So if I'm going to add this numbers i need them to share a denominator

1 1/2 = 1 4/8 1/8 stays the same 3/4 - 6/8 6/8 + 1/8 = 7/8

7/8 + 1 4/8 = 1 11/8 = 2 3/8 so 3 cups would be the best estimate because the 3/8's are important for the exact mesurement

Hope this helps : )

3 0
4 years ago
Consider the diagram and the paragraph proof below. Given: Right △ABC as shown where CD is an altitude of the triangle Prove: a2
gladu [14]
The answer is B.

This is because since f + e = c,
then a² + b² = c(f + e)
a² + b² = c(c)
a² + b² = c²

This is the correct answer 
5 0
4 years ago
Read 2 more answers
2. Kevin asked Olivia what parallel lines are. Olivia responded, "They are lines that never
Shkiper50 [21]
A I hope this really helps
6 0
3 years ago
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