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3 years ago

Simplify this expression. (2+3)(5-7)

Mathematics

2 answers:

brilliants [131]3 years ago

7 0

Answer:

-10

Step-by-step explanation:

(2+3)(5-7)

PEMDAS says do what is in the parentheses first

(5) ( -2)

Then multiply the parentheses

-10

Svetradugi [14.3K]3 years ago

4 0

Answer:

-10

Step-by-step explanation:

(2+3)(5-7)

(5)(-2)

5*(-2)

-10

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Given the arc length of a circle is 127π centimeters and the subtended angle is 60˚. Find the Circumference of the circle.

Mumz [18]

The circumference of the circle is 762π cm.

<h3>What is length of arc of a circle?</h3>

The length of arc a circle can is determined with the radius and central angle of the arc.

The radius of the circle is calculated as follows;

$L = \pi r \times \frac{ \theta }{180} \\\\
\pi r \theta = 180 L\\\\
\pi r = \frac{180 L}{\theta}$

The circumference of the circle is calculated as follows;

$C = 2\pi r\\\\
C = 2(\pi r)\\\\
C = 2(\frac{180 \ L}{\theta } )\\\\
C = 2(\frac{180 \times 127\pi}{60 } )\\\\
C = 762 \pi \ cm$

Learn more about circumference of a circle here: brainly.com/question/9782777

4 0

1 year ago

what does "relationship" mean in the question, "what is the relationship between 4's in the number 4,400?

FromTheMoon [43]

Its the connection between those numbers

3 0

2 years ago

I need help with 38,39 and 40 please!

kodGreya [7K]

Answer:

It's 37. B 38. B 39. C 40. A

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

4. (10 points) From the given triangle:

katrin2010 [14]

Answer:

sinθ = y/r sinθ = $\frac{-6}{10} = \frac{-3}{5}$

cosθ = x/r cosθ = $\frac{8}{10} = \frac{4}{5}$

tanθ = y/x tanθ = $\frac{-6}{8} =\frac{-3}{4}$

cscθ = r/y cscθ = $\frac{-5}{3}$

secθ = r/x secθ = $\frac{5}{4}$

cotθ = x/y cotθ = $\frac{4}{3}$

explanation:

r = $\sqrt{(8)^{2}+(-6)^{2} }$

r = 10

x = 8

y = -6

r = $\sqrt{(4)^{2}+(3)^{2} }$

r = 5

x = 4

y = 3

7 0

2 years ago

The growth of a new strain of bacteria is represented by y=79.31(1.48)^x where x represents the number of days and y represents

Likurg_2 [28]

So we are given the equation
y = 79.31(1.48)ˣ
Whereas the x represents the number of days <--- what you need to know
y is the final number you are going to get, does not matter for now
You are trying to find the number of bacteria on Day 8
Put 8 into x
PEMDAS
Parentheses
Exponents
Multiplication/Division
Addition/Subtraction
1.48⁸ = 23.019
79.31 * 23.019 = 1825.667
Your answer would be A.

8 0

3 years ago