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Daniel [21]
2 years ago
13

Explain why 7*8 is not a number sentence

Mathematics
1 answer:
Naily [24]2 years ago
4 0
Because it is really simple if it was an equation then it would be a number sentence since it only has 2 numbers and 1 thing that u are doing it is not a number sentence
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T(x)=70(.80)*+20 where x is the time in minutes and the T is the temperature in degree celsius . What is the initial temperature
Serggg [28]

Answer:

The initial temperature of the coffee was 90°C.

Step-by-step explanation:

The function representing the temperature of the coffee after <em>x</em> minutes is:

T(x)=70\cdot(0.80)^{x}+20

T is the temperature in degree Celsius.

The initial temperature of the coffee will be at <em>x</em> = 0.

Compute the value of T (x) at x = 0 as follows:

T(x)=70\cdot(0.80)^{x}+20

T(0)=70\cdot (0.80)^{0}+20

        =70\times 1+20\\=70+20\\=90

Thus, the initial temperature of the coffee was 90°C.

8 0
3 years ago
A circle has a diameter of 24 cm. What is its circumference?
nikdorinn [45]

Answer:

75.36cm

Step-by-step explanation:

Circumference of circle =

2\pi \: r \\  = 2(3.14)(24 \div 2) \\  = 75.36cm

4 0
2 years ago
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Help me with this please! determine x and y are in a proportional relationship!!
Temka [501]

Answer:

YES

Step-by-step explanation:

As x increases by 3 each time, y also increases by a steady number each time, which is 6. This means that x and y are in a proportional relationship with a 1:2 ratio.

7 0
2 years ago
Does (4, 1) make the equation y = x true?
Anna [14]

Answer:

No

Step-by-step explanation:

No it does not. For (4,1), x is equal to 4 and y is equal to 1.

This makes the equation y=x: 1=4

4 does NOT equal 1, so the equation will be false.

4 0
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Answer:

=32x−24

Step-by-step explanation:

3 0
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