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oee [108]
2 years ago
12

Pls answer fast it is urgent and if your answer is correct I will mark you as a brainlist​

Mathematics
1 answer:
IgorC [24]2 years ago
3 0
1. 50 x 40 = 2,000 cm^2

2. 2(73) + 2(46) = 238 m

3. 73 x 46 = 3,358 m^2
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FACTORIZE AND Split the middle term: 72 + b - b^2​
seraphim [82]

Answer:

- (b - 9)(b + 8)

Step-by-step explanation:

72 + b - b² ← factor out - 1 from each term and rearrange into standard form

= - (b² - b - 72) ← factor the quadratic

Consider the factors of the constant term (- 72) which sum to give the coefficient of the b- term (- 1)

The factors are - 9 and + 8

Use these factors to split the b- term

b² - 9b + 8b - 72 ( factor the first/second and third/fourth terms )

b(b - 9) + 8(b - 9) ← factor out (b - 9) from each term

(b - 9)(b + 8)

Then

72 + b - b² = - (b - 9)(b + 8)

7 0
2 years ago
Help fast it’s a test
Flura [38]

Answer:

A test is somehting you take for a teset i will no help

Step-by-step explanation:

3 0
3 years ago
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Find a. Write your answer in simplest radical form.
OlgaM077 [116]

Answer:a=10

Step-by-step explanation:

I don’t know how to explain this in detail but I hope these notes and work help you.

8 0
2 years ago
Is this right please hep
romanna [79]

17 meters because 5^2+12^2=17 meaning the answer must be d

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2 years ago
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Does anyone know how to solve this?
Margarita [4]

Answer:

The correct option is c.

Step-by-step explanation:

Given that,

u = 7i+4j and v = 2i-3j

We need to find the product of u and v. The dot product of two vectors is given by :

u{\cdot}v=(7i+4j){\cdot} (2i-3j)\\\\=(7i)(2i)+(4j)(-3j)\\\\=14-12\\\\=2

So, the dot product of u and v is equal to 2.

4 0
3 years ago
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