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GalinKa [24]
3 years ago
6

Solve for t. You must write your answer in fully simplified form. -7t = 18

Mathematics
1 answer:
Musya8 [376]3 years ago
4 0

Answer: t = -18/7 = 2.57

Step-by-step explanation:

-Solve for t:

-7t=18

\frac{-7t}{-7} = \frac{18}{-7}

t=-\frac{18}{7} =2.57

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A 128-ounce jug of milk costs $3.20, and a 64-ounce jug of milk costs $2.24. What is the difference in cost per ounce between th
klasskru [66]

Answer:

The 64 ounce jug of milk costs $0.010 more per ounce than the 128 ounce jug of milk/

Step-by-step explanation:

3.20/128=$0.025 per ounce jug of milk

2.24/64=$0.035 per ounce jug of milk

0.035 - 0.025 = .010

5 0
3 years ago
A piece of land is 20cm by 5cm. A portion of the land by size 10cm by 2cm was used to cultivate tomatoes. what is the area of th
Sergio039 [100]

Answer:

80cm^2

Step-by-step explanation:

20*5=100

10*2=20

100-20=80

8 0
3 years ago
What are the amplitude, period, and phase shift of the given function? f(t)=-1/2sin(3t-2pi)
Romashka [77]

Answer:

The amplitude=|A|=\frac{1}{2}, period=3 and \text{phase shift}=\frac{2\pi}{3}.

Step-by-step explanation:

The given function is

f(t)=-\frac{1}{2}\sin (3t-2\pi)      .... (1)

The general form of sine function is

F(t)=A\sin (Bt-C)+D                 ....(2)

where, |A| is the amplitude, B is period, D is the vertical shift (up or down), and C/B is used to find the phase shift.

On comparing (1) and (2), we get

A=-\frac{1}{2}

B=3

C=2\pi

D=0

So,

amplitude=|A|=\frac{1}{2}

period=3

\text{phase shift}=\frac{2\pi}{3}

Therefore amplitude=|A|=\frac{1}{2}, period=3 and \text{phase shift}=\frac{2\pi}{3}.

8 0
3 years ago
Given the equation x + 2y = 0, which equation will form a system of linear equations without a solution?
Oxana [17]

Answer:

2.5 and -0.75

3 0
3 years ago
Mary is baking a cake. The recipe calls for 7 cups of flour. She already put in 3 cups. How many more cups does she need to add?
pshichka [43]

Answer:

4

step by step if she has 7 cups and already put in 3

7-3=4

3 0
3 years ago
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