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3 years ago

X²- 49=0 what is the answer is for my exam? Thanks to the one who helps me has 10 points

Mathematics

2 answers:

Nikitich [7]3 years ago

8 0

Step-by-step explanation:

x² - 49 = 0

or, x² - (7²) = 0

or, ( x + 7 ) ( x - 7 ) = 0

hope this answer will help you.

kirill [66]3 years ago

5 0

Factor the expression
(x - 7)(x + 7) = 0
Zero product property
Solution: x = 7, x = -7

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What is the area of triangle EDF?

Ann [662]

Answer:

4.5

Step-by-step explanation:

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Since they share the same proportions, the same operations can be performed on each base to find the area.

The answer can be found with the knowledge that the area of a triangle is half of the height * width. You know the width of ∠BAC is 4, and the area is 8, so 16 (the area doubled) / 4 is the height. The width and height of ∠BAC are the same, and since the proportions are also the same, the width and height of ∠EDF are both 3. So the area is the width (3) times the height (3) divided by 2.

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3 years ago

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kirill115 [55]

Answer:

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Step-by-step explanation:

When x = -4 the output is -2

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3 years ago

Please help The diagram shows a 5ft student standing near a tree

Novosadov [1.4K]

Answer:

25 ft

Step-by-step explanation:

The diagram shows two triangles that are similar. Similar triangles have equal angles and sides that are proportional to each other. Since the base of each triangle is given, we can find the proportion of the sides:

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3 years ago

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Over [174]

Answer:

Step-by-step explanation:

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Graph done with paint, obviously not to scale.

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2 years ago

Vanessa has scored 45 32 and 37 are three math quizzes she will take one more quiz and she wants a quiz average of at least 40 w

dedylja [7]

She must at least score a 38
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45 + 32 + 37 = 114
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3 0

3 years ago

Read 2 more answers

X²- 49=0 what is the answer is for my exam? Thanks to the one who helps me has 10 points​

X²- 49=0 what is the answer is for my exam? Thanks to the one who helps me has 10 points