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Deffense [45]
3 years ago
15

Multiplying rational numbers (-7) (-2) SHOW WORK PLEASE

Mathematics
1 answer:
lyudmila [28]3 years ago
3 0
The answer is 14 because a negative number multiplied by another negative number is positive. So (-7)*(-2) is 14.
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You have 24 toys for 6 children.
Lelu [443]
24 divided by 6 equals 4
5 0
3 years ago
If the mass of a material is 49 grams and the volume of the material is 7 cm^3, what would the density of the material be?
inysia [295]
The equation for density is:
density =  \frac{mass}{volume}

To help you remember - my teacher told us to remember "We <span>♡ density," and the heart stands for </span>\frac{m}{v}, or \frac{mass}{volume}. Cheesy, but it works!<span>
</span>
Back to the problem:
We know the mass if 49g and the volume is 7 cm^{3}, so plug these values into the equation for density:
density = \frac{mass}{volume}\\&#10;density = \frac{49\:g}{7\:cm^{3}} \\&#10;density = 7\:g/cm^{3}

Answer: The density is 7 g/cm^{3}
4 0
3 years ago
A father is 32 years older than his son. In four years,
sergiy2304 [10]

Answer:

  • father: 36
  • son: 4

Step-by-step explanation:

Let s represent the son's age now. Then s+32 is the father's age. In 4 years, we have ...

  5(s+4) = (s+32)+4

  5s +20 = s +36 . . . . . eliminate parentheses

  4s = 16 . . . . . . . . . . . . subtract s+20

  s = 4

The son is now 4 years old; the father, 36.

_____

<em>Alternate solution</em>

In 4 years, the ratio of ages is ...

  father : son = 5 : 1

The difference of their ages at that time is 5-1 = 4 "ratio units". Since the difference in ages is 32 years, each ratio unit must stand for 32/4 = 8 years. That is, the future age ratio is ...

  father : son = 40 : 8

So, now (4 years earlier), the ages must be ...

  father: 36; son: 4.

5 0
3 years ago
Given the side measurements, classify the triangle as acute, right, obtuse, or not a triangle. 11, 13, 25 acute right obtuse not
Kryger [21]

RESPUESTA: no es un triangulo

EXPRICACION

3 0
3 years ago
Joe saves most of his allowance every week since his 7birthday. If joe saves $4 per week, how much money would he have saved on
maksim [4K]

Answer:

multiply

Step-by-step explanation:

7x 15= 105

105x4=420

then add 105+420= 44,100

6 0
3 years ago
Read 2 more answers
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