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1 year ago

Laurie has a signed contract with I- Mobile where she will pay a $25 fee each month plus $2 per phone call.

Mathematics

1 answer:

nikitadnepr [17]1 year ago

8 0

Answer:

i dont know how your teacher teaches it but in the first question take away the y after the 25. number 2 the start equation would be 55=2x+25 then you would subtract 25 from each side to get 30=2x, the divide by to to get x=15 or she made 15 calls. number 3 is correct.

i hope this helps

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Which is greater 3/5 or 23%

just olya [345]

Answer:

3/5 is greater because when you convert it into decimal it's 0.6 and when you convert 23% into decimal it's 0.23

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3 years ago

Find the slope of the line that passes through the points (-4,2) and (2,6)

Anuta_ua [19.1K]

Answer:

$\large\boxed{\text{The slope}\ m=\dfrac{2}{3}}$

Step-by-step explanation:

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (-4, 2) and (2, 6). Substitute:

$m=\dfrac{6-2}{2-(-4)}=\dfrac{4}{6}=\dfrac{4:2}{6:2}=\dfrac{2}{3}$

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3 years ago

Can you help me? i do not get it

Allushta [10]

Let's assume the question is to find the area of the shaded region.

7. We have to assume the bottom right angle is right as well.

Consider the white triangle at the bottom; call its left leg x.

Then the big tra pezoid which includes the shaded part has area

(1/2)((14 + x) + 26)(15)

and the bottom right triangle has area

(1/2)x(15)

and white triangle on the right has

(1/2)(26)(15 - 6)

The total area of the shared part is thus

(1/2)((14 + x) + 26)(15) - (1/2)x(15) - (1/2)(26)(15 - 6)

= (1/2)(15)(40 + x - x) - 13(9)

= 183

Answer: 183 sq in

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A = πR²-πr² = π( (21/2)² - (21/2 - 3.5)² ) = π(2(21/2)(3.5) - 3.5²) = 3.5π(21-3.5)=61.25π

Answer: 61.25π sq m

9. That looks like a parallelogram less a right triangle.

The parallelogram has area 15(23.8)

The right triangle missing leg x satisfies

x² + 21² = 23.8²

x = 11.2

The right triangle area is

(1/2) (21)(11.2)

So the shaded area is

15(23.8) - (1/2) (21)(11.2) =239.4

Answer: 239.4 sq ft

10. That's a circle less a square. The diagonal of the square is 8√2 and the radius of the square is half of that, 4√2

The area is

π(4√2)² - 8² = 32 π - 64

Answer: 32π - 64 sq cm

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3 years ago

64x-16 I need 3 equivalent expressions

Daniel [21]

Answer:

8 (8x - 2)

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4 (16 x- 4)

Step-by-step explanation:

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2 years ago

36. in a group of 5 freshman, 10 sophomores, 3 juniors, and 2 seniors, how many ways can a president, vice president, and treasu

viktelen [127]

Using the permutation formula, it is found that the people can be chosen for the roles in 6840 ways.

The order in which the people are chosen is important, as there are different roles, hence the <em>permutation formula</em> is used.

<h3>What is the permutation formula?</h3>

The number of possible permutations of <u>x elements from a set of n elements</u> is given by:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

In this problem, 3 people will be chosen from a set of 20 people, hence the number of ways is given by:

$P_{20,3} = \frac{20!}{17!} = 6840$

More can be learned about the permutation formula at brainly.com/question/25925367

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2 years ago