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3 years ago

Help me with this question

Mathematics

2 answers:

ladessa [460]3 years ago

7 0

Jan > Eli per hour. The slope is the rate per hour, which is almost 6, but Jan only has 20/4 = 5

labwork [276]3 years ago

6 0

Hey there!

If Eli earned $20 for every 4 hours she works, that means that she earned $5 per hour, which I found by simply dividing $20 by 4.

You can look at Jan's earnings on the graph that she earns $6 per hour, which is a dollar more than Eli. You can also look at Jan's earnings after 4 hours to see that it is 4 dollars more than what Eli earns. This is due to the fact that she earns $6 per hour and after 4 hours has earned $24 instead of Eli's $20.

Because of this, your answer will be Jan earns more money than Eli, which is your third option.

Hope this helped you out! :-)

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3 years ago

Andres boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple revolutions. The Ferris wheel rot

Gelneren [198K]

Answer:

a) r(t) = 0.783t radians

b) h(t) = 30cos(0.783*t) feet

Step-by-step explanation:

The situation is depicted in the picture attached

<h3>(see picture) </h3>

Since the angular speed is constant, to find an expression for the angle r(t) in radians we just cross-multiply using the fact that 1 min = 60 seconds

4.7 radians __________ 60 seconds

r(t) radians ____________ t seconds

$\large \displaystyle\frac{4.7}{r(t)}=\displaystyle\frac{60}{t}\Rightarrow r(t)=(4.7/60)t \Rightarrow\\\\\boxed{r(t)=0.783t\;rad}$

The height h(t) after t seconds is given by

h(t) = 30cos(r(t)) ===>

h(t) = 30cos(0.783*t) feet

7 0

3 years ago

Helppp the tutorsss arent workinggg

Rama09 [41]

Answer:

210.82

Step-by-step explanation:

arc length= 2pi r (Ø/360)

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5 0

3 years ago

There are 454 grams in a pound. There are 16 ounces in a pound. How many grams are in an ounce?

Lostsunrise [7]

Answer: There are 28.375 grams in an ounce.

Step-by-step explanation:

Given: Total grams in a pound =454 grams

Total ounces in a pound = 16 ounces

Therefore, 16 ounces = 454 grams

To find grams in an ounce, we need to divide 454 grams by 16, we get

The total grams in an ounce= $\frac{454}{16}=28.375\ grams$

∴The total grams in an ounce= 28.375 grams

Hence, there are 28.375 grams in an ounce.

8 0

3 years ago

Read 2 more answers

Plzzz hurry up and help me if A+B=45<br>prove that <br>(1+tanA)(1+tanB)=2

Solnce55 [7]

Answer:

see explanation

Step-by-step explanation:

If A +B = 45° then tan(A+B) = tan45° = 1

Expanding (1 + tanA)(1 + tanB)

= 1 + tanA + tanB + tanAtanB → (1)

Using the Addition formula for tan(A + B)

tan(A+B) = $\frac{tanA+tanB}{1-tanAtanB}$ = 1 ← from above

Hence

tanA + tanB = 1 - tanAtanB ( add tanAtanB to both sides )

tanA + tanB + tanAtanB = 1 ( add 1 to both sides )

1 + tanA + tanB + tanAtanB = 2

Then from (1)

(1 + tanA)(1 + tanB) = 2 ⇒ proven

7 0

3 years ago