Please helpppp im so lost

Mathematics

1 answer:

saveliy_v [14]2 years ago

6 0

So solution is here:
first question's right answer is second sentence
second question's answer is square

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7-2(2+3x)=27what is he answer

Taya2010 [7]

<span>Simplifying 7 + -2(2 + 3x) = 27 7 + (2 * -2 + 3x * -2) = 27 7 + (-4 + -6x) = 27 Combine like terms: 7 + -4 = 3 3 + -6x = 27 Solving 3 + -6x = 27 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -6x = 27 + -3 Combine like terms: 3 + -3 = 0 0 + -6x = 27 + -3 -6x = 27 + -3 Combine like terms: 27 + -3 = 24 -6x = 24 Divide each side by '-6'. x = -4 Simplifying x = -4</span>

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2 years ago

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Write the following ratio as a fraction, a decimal and a percentage. 20 to 33

raketka [301]

20/33 as a fraction. 60.6% as percentage and as a decimal 6.06 occurring

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3 years ago

Erica knits 18 squares on Monday. She knits 7 more squares each day for the rest of the week. How many squares does Erica have

Ne4ueva [31]

She knits 18 squares on Monday.
Then she knits 7 more squares each day:
Tuesday: +7, Wednesday: +7, Thursday: +7 and Friday: +7
18 + 7 * 4 = 18 + 28 = 46
Answer: She has 46 squares on Friday.

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2 years ago

The sum of x and 25 is less than 75

Pavel [41]

I you're looking for the equation, it is

$x+25 \ \textless \ 75$

and If you need me to solve it, it is

$x \ \textless \ 50$

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2 years ago

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has incr

Andrews [41]

Answer:

(a) 13.85 °C

Step-by-step explanation:

The temperature difference is a decaying exponential function of time. Here, it decreases from an initial difference of 15 °C to 10 °C after 25 minutes. So, that temperature difference can be modeled as ...

ΔT = 15(10/15)^(t/25)

We want to find the value of this at t=55. It is ...

ΔT = 15(2/3)^(55/25) ≈ 6.15

This is the amount the temperature of the drink is below room temperature.

drink temperature = (20 - 6.15) °C = 13.85 °C

The temperature of the drink after 55 minutes is about 13.85 °C.

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2 years ago