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d1i1m1o1n [39]
3 years ago
15

Can someone explain to me step by step how to do -2.5 x -20.

Mathematics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

50

Step-by-step explanation:

-2.5 × -20

negative multiply negative equals positive

(-) × (-) = (+)

so, the answer would be positive.

-2.5 × -20

= <u>5</u><u>0</u>

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Simplify the expression m 4/5x m1/10
BlackZzzverrR [31]

Answer:

√x4

Step-by-step explanation:

(x^2+x−3)⋅(x^2−4)

(y^2+6y+8)−(y^2+y−12)

8 0
3 years ago
I need your help please!
Aneli [31]

Answer:

1 mile is mapped to 0.3428 inches i.e. unit rate is 0.3428 inches/mile.

Step-by-step explanation:

Given that the scale of the map is \frac{3}{10} inches = \frac{7}{8} miles ....... (1)

Now, we have to convert this map scale to a unit rate.

And the unit rate is the number of inches per mile.  

As the scale is constant, therefore from the the relation (1) we get  

1 mile = \frac{3 \times 8}{10 \times 7} = 0.3428 inches.

Therefore, 1 mile is mapped to 0.3428 inches i.e. unit rate is 0.3428 inches/mile.  (Answer)

5 0
3 years ago
What is 5 divide by 1/4 equals
Anarel [89]
This equation is equal to 5*4 so it equals 20
7 0
3 years ago
Read 2 more answers
the phrase “is a function of” gets used in non-mathematical speech as well as mathematical mathematical speech in sentences like
Tanya [424]

Answer:

Step-by-step explanation:

This is a very interesting question. I'm going to answer no, but don't take that to mean that the question is not worthwhile. It is.

In math, function has the meaning of considering ordered pairs. Here are 4 such ordered pairs.

(1,2)

(2,4)

(1,-3)

(5,9)

They are really not related to one another except all are ordered pairs.

Here's the math definition. If one of the x values (1,2,1,5) has more than 1 y value, you do not have a function.

1 has 2 y values,  2 and -3. Therefore the 4 points do not form a function

if you change the first (1,__) to 0 and your ordered pair becomes (0,2), all is well and you do have a function.

Whether you understand this or not, you have to see that a math function and a biology function are very different. The math function has numbers and those numbers have to obey a rule.

The biology function seems to be saying that how your mom and dad brought you up will determine what foods you like.

Those two uses are very different. How your mom brought you up is related to food. It could be anything else like "Being a knife carrying gang member is a function of where you live."

4 0
3 years ago
|x-1|+2&lt;4 solving for x
Ganezh [65]

Answer:

x < 3 and x > -1

Step-by-step explanation:

Step 1: Subtract 2 from both sides.

  • |x-1| + 2 - 2 < 4 - 2
  • |x-1|

Step 2: Solve absolute value.

  • We know x - 1 < 2 and x - 1 > -2.

Condition 1:

  • x - 1 < 2
  • x - 1 + 1 < 2 + 1 (Add 1 to both sides)
  • x < 3

Condition 2:

  • x - 1 > -2
  • x - 1 + 1 > -2 + 1 (Add 1 to both sides)
  • x>-1

Therefore, the answer is x < 3 and x > -1.

8 0
2 years ago
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