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tino4ka555 [31]
3 years ago
6

Please I really need to know the answer now! I need to submit this tomorrow!

Mathematics
1 answer:
zaharov [31]3 years ago
8 0

Let the weights of the cherries held by Kristin and Doris be k and d, respectively. Kristin holds 4.2 kg fewer cherries than Doris: k = d - 4.2.

After Kristin sells 0.85 kg of cherries, k - 0.85 represents her holdings. Doris' holdings are twice Kristin's, or d = 2(k-0.85).

Find Doris' holdings. Eliminate the variable k:

Substitute d - 4.2 for k in d = 2(k-0.85): d = 2( [d - 4.2] - 0.85).

Perform the indicated multiplication now: d = 2d - 8.4 - 1.7.

Grouping like terms: 10.1 = d. Doris holds 10.1 kg of cherries.

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Answer:

False, the angles remain unchanged

Step-by-step explanation:

6 0
4 years ago
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Help me please, I need help I don’t understand this problem
jarptica [38.1K]

The maximum speed of a boat at 30 feet length of water is 0.093 nautical miles/hour or knots.

<u>Step-by-step explanation:</u>

  • The equation for the maximum speed, s is given by s²= (16/9)x
  • where, x is the length of the water line in feet.

It is given that, the modeled equation s²= (16/9)x is used to find the maximum speed in knots or nautical miles per hour.

The question is asked to find the maximum speed when the length of the water is 30 feet.

Therefore, to find the maximum speed in 30 feet water, the given modeled equation is used. So, substitute the 30 feet in place of x.

<u>Now, calculating the maximum speed :</u>

s² = (16/9)(30)

s² = 480 / 9

s² = 53.3

Taking square root on both sides,

s = √53.3

s = 7.3

The maximum speed of a boat at 30 feet length of water is 7.3 nautical miles/hour or knots.

6 0
4 years ago
2 Solve the equation for t. Show your work.<br> 5(2t - 3) – 7.5t = 0.5(12 – t)<br> PLEASEEEE HELP ME
dsp73

Answer:

t = 7

Step-by-step explanation:

5(2t - 3) – 7.5t = 0.5(12 – t)

5*2t - 3*5 - 7.5t = 12*0.5 - t *0.5

10t - 15 - 7.5t = 6 - 0.5t           {Now, combine like terms}

10t - 7.5t - 15 = 6 - 0.5t

         2.5t -15 = 6 - 0.5t      {Add 15 to both sides}    

         2.5t      = 6 - 0.5t + 15

              2.5t = 21 - 0.5t       { Add 0.5t to both sides}

    2.5t + 0.5t = 21  

                 3t = 21     {Divide both sides by 3}

                   t = 21/3

t = 7

6 0
3 years ago
Complete the table showing the price of different amounts of grapes at this rate
luda_lava [24]
There’s no image so I can’t answer
6 0
3 years ago
Please help me it's urgent!
Crank

Answer:

y = 2x-5

y=-x+4

Step-by-step explanation:

Just need to solve the:

x+y=4

y-2x=-5

And we have:

x=3

y=1

Then replace x and y into the answer to find the correct one

7 0
3 years ago
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