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Ksju [112]
3 years ago
13

-7 + 4 (r - 5) what is the answer

Mathematics
2 answers:
almond37 [142]3 years ago
5 0

Answer:

4x -27

Step-by-step explanation:

kari74 [83]3 years ago
3 0

Answer:

4r-13

Step-by-step explanation:

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Please please please help asap
antoniya [11.8K]

Answer:

1,3,5

Step-by-step explanation:

81 is a perfect square so it can be written as an integer

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7 0
3 years ago
Zoe’s math teacher tells her to construct an equilateral triangle. What information does Zoe need?
Inga [223]
You just need to know that all sides need to have the same measurement because it is a equilateral triangle. 
6 0
3 years ago
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Write 5y-2=-9x+7 in standered form
bogdanovich [222]
y = \frac{ - 9}{5} x + \frac{9}{5}
my answer, right?
4 0
3 years ago
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Michael estimated his mass as 8 kilograms. Is his estimate reasonable? Justify your answer.
Gennadij [26K]

Answer:  The answer is Yes.


Step-by-step explanation:  Given that Michael estimated his mass and found it to be 8 kilograms. It may sound awkward to us, but its true. Because when we measure our weight by the weight machine it gives us the product of our actual mass and the acceleration due to gravity.

From second law of motion, we have

Weight = mass × acceleration due to gravity.

That is, W = m × 9.8 m/sec².

The unit of mass is kilogram and 1 kg m/sec² = 1 Newton. Therefore, the unit of the weight we generally measure is Newton (N), not kilogram. Here is what we make mistake usually.

Thus, if Michael' mass is 8 kg, then his weight will be

W = 8 × 9.8 kg m/sec² = 78.4 N, which is normal weight of a person.

Thus, his estimation is perfectly OK.


8 0
3 years ago
The number 4 on a dice was thrown 7 times in the first 50 throws.
STatiana [176]

Answer:

4 would be rolled 60 times when the dice was thrown 3000 times.

Step-by-step explanation:

3000/50 is how many times 4 would be rolled

4 0
3 years ago
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