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Natali5045456 [20]
3 years ago
7

Solve (−7) ⋅ (−4). Please hurry :D -28 -11 28 11

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
5 0

Answer:

28

Step-by-step explanation:

- (7) \times ( - 4) \\  - ( - 28) \\  -  \times  -   =  +  \\  = 28

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Jason downloaded 288 pictures from his camera of the pictures 38% are of his family about how many pictures are of his family
Angelina_Jolie [31]

turn your percentage into a decimal. so 38. move your decimal 2 places to the left. which = .38
you do 288×.38=109.44

round the answer since it's 4 you make it 109

hope this helped :)

5 0
3 years ago
Please help with number 39
mr Goodwill [35]

You want to find values of v (number of visors sold) and c (number of caps sold) that satisfy the equation

... 3v + 7c = 4480

In intercept form, this equation is

... v/(1493 1/3) + c/640 = 1 . . . . . divide by 4480

Among other things, this tells us one solution is

... (v, c) = (0, 640)

The least common multiple of 3 and 7 is 21, so decreasing the number of caps sold by some multiple of 3 and increasing the number of visors sold by that same multiple of 7 will result in another possible solution.

The largest multiple of 21 that is less than 4480 is 213. Another possible solution is (0 +213·7, 640 -213·3) = (1491, 1)

We can also pick some number in between, say using 100 as the multiple

... (0 +100·7, 640 -100·3) = (700, 340)

In summary, your three solutions could be

... (visors, caps) = (0, 640), (700, 340), (1491, 1)

7 0
3 years ago
The density of water is 1 gram per cubic centimeter. A more dense object will sink, and a less dense object will float. Will a m
Bogdan [553]
Ah clever. So you need two formulas.

1) Volume of the marble.

   4(pi)r^3/3
= 4(pi)(1.4)^3/3
<span>= 11.49 (approx)
</span>
2) Formula for density.
  
    D = M / V
        = 9 / 11.49
        = 0.78

0.78 < 1

Therefore the marble will float.

8 0
4 years ago
Read 2 more answers
Hrgrgrgrhheyeyehryryryryrhryryhrhrhrhrududdyryrydy
Mazyrski [523]

Answer True

Step-by-step explanation:

It is true because you are crazy.

5 0
3 years ago
15 yards to 18 yards
jeyben [28]
The answer is 270 , I multiplied 15 by 18 and got 270
8 0
4 years ago
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