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2 years ago

Select the expressions that are equivalent to18m - 12

Mathematics

1 answer:

bezimeni [28]2 years ago

8 0

A,C,D are equivalent to 18m -12 as solving each of them will give you 18m-12.

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Find the area of the shaded region.

taurus [48]

Answer:

$426.96 \: {km}^{2}$

Step-by-step explanation:

Area of the shaded region = Area of triangle with base 40 km and height 27 km - Area of circle with radius (12/2) 6 km.

$= \frac{1}{2} \times 40 \times 27 - 3.14 \times {(6)}^{2} \\ \\ = 20 \times 27 - 3.14 \times 36 \\ \\ = 540 - 113.04 \\ \\ = 426.96 \: {km}^{2}$

5 0

3 years ago

L=a+(n-1)d solve for n

earnstyle [38]

Answer:

(L-a)/d + 1 = n

Step-by-step explanation:

Let's isolate (n-1), and after that isolate n:

1) subtract a from both sides: L - a = (n-1)d

2) Divide both sides by d: (L-a)/d = n-1

3) Add 1 to both sides, to isolate n: (L-a)/d + 1 = n

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2 years ago

Kara did a survey to determine to study the types of pets that students in her school had. She surveyed 300 students and found t

julsineya [31]

Answer:

Step-by-step explanation:

Total Number of Students =300

Percentage who had cats, n(C) = 40%

Percentage who had both cats and dogs , $n(C \cap D)$ = 12%

Percentage who had neither cats nor dogs, $n(C \cup D)'$ =45%

Now:

Universal Set, $U = n(C)+n(D)-n(C \cap D)+n(C \cup D)'$

$100 = 40 + n(D)-12+45\\n(D)=100-73\\$Percentage of those who own dogs =27\%$

Therefore:

Number of Students who had dogs

=27% of 300

=81

3 0

3 years ago

JELP HELP HELP HELP HELP HELP HELP 5TH GRADE HELP

sergey [27]

Answer: A 729

Step-by-step explanation:

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2 years ago

What percent is represented by the diagram

Firdavs [7]

Answer:

180%

Step-by-step explanation:

A full box shaded in plus 80% of another box is 180%.

4 0

2 years ago

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