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Kryger [21]
3 years ago
7

Please help me right away.

Mathematics
1 answer:
8090 [49]3 years ago
6 0

\dfrac{D(t)}{R(t)}=\dfrac{400-120t}{450-150t}=\dfrac{10(40-12t)}{10(45-15t)}=\dfrac{40-12t}{45-15t}\to\boxed{a.}

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Please help, I’ll mark your answer as brainliest.
svet-max [94.6K]

Answer:

y=-2x+36

Step-by-step explanation:

i guess cuz it says 5units

7 0
3 years ago
The bill at a restaurant came to $136.40.The customer decided to leave a 15% tip.What was the total bill including tip.
hjlf

Answer:

$156.86

Step-by-step explanation:

To calculate tip, you need to multiply the total bill by the percent tip you are going to leave. In this case the bill is $136.40, and the customer is going to leave a 15% tip. So, you would want to move the decimal place over to the left by 1, which you should get 13.64 as your number. Then divide it in half, which should give you 6.82. Now add 13.64 and 6.82 with the original bill price. If you don't add the 13.64 you would've forgotten the 10% part of the tip. At the end you should get $156.86 as your final bill.

4 0
3 years ago
16/x = 2/7 cross multiplication
WITCHER [35]

Answer:

x=56

Step-by-step explanation:

16 x 7= x * 2

x=\frac{16 x7}{2}

x=56

Hope this helps :)

8 0
3 years ago
If m 2 n, which inequalities must be true? Check all that apply.
anzhelika [568]

Answer:

(a)\ m+ 2.1 > n + 2.1

(b).\ m - (-4) > n - (-4)

(c)\ 9 +m> 6 + n

Step-by-step explanation:

Given

m > n

Required

Select true inequalities

(a)\ m+ 2.1 > n + 2.1

Subtract 2.1 from both sides

m > n

This is true

(b).\ m - (-4) > n - (-4)

Open brackets

m + 4 > n + 4

Subtract 4 from both sides

m > n

(c)\ 9 +m> 6 + n

m> -9+6 + n

m> n-3

This is also true

8 0
3 years ago
Read 2 more answers
A right triangle has legs measuring 18 in. and 26 in. What is the length of the hypotenuse? Round to the nearest tenth. A) 18.8
Evgen [1.6K]

Answer:

a

Step-by-step explanation:

3 0
3 years ago
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