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Bumek [7]
3 years ago
15

I need help with this please

Mathematics
1 answer:
Flauer [41]3 years ago
6 0
Isosceles i’m pretty sure
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Calculate cose to two decimal places.
Monica [59]

Answer:

B. 0.69

Step-by-step explanation:

Law of Cosines: cos A = (b² + c² - a²) / 2bc

cosθ = (7² + 11² - 8²) / 2*7*11 = 106/154 = 0.688 ≈ 0.69

4 0
3 years ago
Someone please teach me how to calculate simplest radical form
IceJOKER [234]

Answer:

Before we can simplify radicals, we need to know some rules about them. These rules just follow on from what we learned in the first 2 sections in this chapter, Integral Exponents and Fractional Exponents.

Expressing in simplest radical form just means simplifying a radical so that there are no more square roots, cube roots, 4th roots, etc left to find. It also means removing any radicals in the denominator of a fraction

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which of the following statements is true about an image after a dilation?
tino4ka555 [31]

Answer:

Not sure what the answer choices are, but choose the choice that says the new image is either stretched or shrunk. In a dilation, the shape/corresponding sides of the pre-image are preserved in the new image, but the size of the new image is altered.

Step-by-step explanation:

hope this helps!

6 0
3 years ago
Abhasra spent half of her weekly allowance at the movies. To earn more money her parents let her clean the windows in the house
never [62]

Answer:

$10

Step-by-step explanation:

x is her weekly allowance.

She spent half her allowance and has ½x remaining.

She earned $7, and now has $12.

12 = ½x+7

x = 10

7 0
2 years ago
How many ways are there to assign 8 visiting different studetns to one Stony Brook summer course, chossing from Calculus I, Line
Dmitry_Shevchenko [17]

Answer:

56 ways

Step-by-step explanation:

Number of ways is given by n combination r (n!/(n - r)!r!)

n = total number of students = 8, r = the number of summer courses = 3

Number of ways = 8 combination 3 = 8!/(8-3)!3! = 8!/5!3! = 8×7×6×5!/5!×6 = 8×7 = 56 ways

6 0
3 years ago
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