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3 years ago

ASAPppppppppppppppppp

Mathematics

1 answer:

Readme [11.4K]3 years ago

4 0

Answer:

9/16

Step-by-step explanation:

3/8 ÷ 2/3

Copy dot flip

3/8 * 3/2

Multiply the numerators

3*3=9

Multiply the denominators

8*2 = 16

Numerator over denominator

9/16

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David tracks his calories burned while training for a meet. The number of calories he burns is expressed by the function c(t) =

Scrat [10]

To find for the composite function of calories burned while swimming flippers using the two given functions, all we have to do is to plug in the function of c (t) to the function b (c). By doing this combination, we can create a function in the form of b [c (t)].

We are given the 2 functions:

c (t) = 704 t

b (c) = 1.3 c

To solve this, just simply combine the 2 but combine c (t) to b(c) since we are looking for the composite function of calories burned while swimming with flippers. Not b (c) to c (t).

b [c (t)] = 1.3 (704 t)

b [c (t)] = 915.2 t

Answer:

4 0

3 years ago

Read 2 more answers

Nina and Jo both ran an 8 km race. Nina took 55 minutes to run the whole race. Jo started the race 3 minutes later than Nina but

grin007 [14]

Answer:

Step-by-step explanation:

First we figure out how fast Nina can run. If Nina can run 8 km in 55 minutes, then her rate is

$\frac{8km}{55min}=.145\frac{km}{min}$ and we can use that in a d = rt table:

d = r * t

Nina .145

Now we can fill in the distance which is 6 for both, since that is the distance where they met:

d = r * t

Nina 6 = .145

Jo 6 =

Now we go to the info given about the time. If Jo started the race 3 minutes after Nina, that means that Nina is running 3 minutes longer than Jo. Filling in the time info:

d = r * t

Nina 6 = .145 * t + 3

Jo 6 = r * t

As you can see, right now we have 2 unknowns in Jo's row. But we don't have to! We will go to Nina's row where the only unknown is time and solve for t. If d = rt, then

6 = .145(t + 3) and

6 = .145t + .435 and

5.55 = .145t so

t = 38.379 minutes. This means that Jo was running 38.379 minutes when she caught up to Nina (it took Nina 3 minutes longer than that to go 6 km since she was already running for 3 minutes when Jo started the race). If Jo's time is 38.379, we can use that in her row for t and solve for r. If d = rt, then

6 = r(38.379) and

r = .16 km/min

Let's check it without the rounding (rounding takes away from the accuracy). If 6 = .145(t + 3) and Nina's rate not rounded is .145454545 and t = 38.37931034, then, rewriting without rounding:

6 should equal .145454545( 38.37931034 + 3)

6 ?=? .145454545(41.37931034)

6 ?=? 6.0 so

Jo's rate is .16 km/min rounded

6 0

3 years ago

A recipe calls for 4 quarts popcorn and 1/3 cup grated Parmesan cheese. If you wanted to make 3/4 of the recipe, how much popcor

butalik [34]

Answer:

3 quarts of popcorn and 1/4 cup of grated Parmesan cheese.

Step-by-step explanation:

Your welcome and don't forget to press that <u>THANKS </u>button!

4 0

4 years ago

Law of sines: Sinca) = sin(B) = sin(C)

ioda

Answer:

no trangles can be formed

Step-by-step explanation:

We have been given angle A as 75 degrees and sides a = 2 and b = 3.

Using Sine rule, we can set up:

sin(a) sin(b)

------------ = ------------

A B

Upon substituting the given values of angle A, and sides a and b, we get:

sin(75) sin(B)

------------ = ------------

2 3

Upon solving this equation for B, we get:

----->3sin(75)=2sin(B)

----->sin(B)=3sin(75)

-------------

------>sinB=1.4488

Since we know that value of Sine cannot be more than 1. Hence there are no values possible for B.

Hence, the triangle is not possible. Therefore, first choice is correct.

sorry I could not get to you sooner. please mark as brainliest

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3 years ago

There are 1,600 students at a university. 24% of students are sophomores, 20% are juniors, and 28% are seniors. How many student

Anastasy [175]

Answer:

There are 448 freshmen

Step-by-step explanation:

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3 years ago