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2 years ago

Hilda adds 5 to a number, then multiplies the sum by negative 2. The result is 6. Write an equation to find the number, x.

Mathematics

2 answers:

adell [148]2 years ago

7 0

The equation would be x+5*-2=6.

The result of that equation would be x=16

butalik [34]2 years ago

6 0

X+5-(-2)=6
Subtract 5 from 5 and 6 which will give you x+(-2)=6 then subtract -2 which gives you x=8

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An ice-hockey puck is slid along ice in a straight line. The puck travels at a steady speed of 20 ms^-1 and experiences no frict

laila [671]

Answer:

d. 50 m

Step-by-step explanation:

1. You have the following information given in the problem above:

- The speed of the puck is 20 $\frac{m}{s}$ and experiences no frictional force.

- The time is 2.5 seconds.

2. Then, to calculate the distance, you must apply the following formula:

$d=Vt$

Where $d$ is the distance, $V$ is the speed and $t$ is the time.

3. Now, you must substitute values into the formula, as below:

$d=(20\frac{m}{s})(2.5s)$

4. Therefore, the result is:

$d=50m$

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2 years ago

Emma has completed 70% of her summer reading list. She has read 14 books so far. How many books are there on her summer reading

REY [17]

The number of books in her summer reading list is = 20

The number of books that has been read by Emma = 14

The percentage of books that has been read by Emma = 70%

But the percentage of books in Emma summer reading list = 100%

∴ The number of books in her reading list= ˣ

That is ;

70% = 14

100% = ˣ

Make ˣ the subject of formula,

ˣ = 100 × 14 / 70

ˣ = 20

Learn more here:

brainly.com/question/20766171

7 0

2 years ago

A GE lightbulb is supposed to last for 1,200 hours. In fact, light bulbs of this type last only 1,185 hours with a standard devi

dybincka [34]

This can be solved using the formula for t test which is = x - mu over standard deviation divided by the square root of the number of samples. In this case, it is 1185 - 1200 over 70 divided by square root of 100 which give us a value of 2.14 which is equal to .9839 in area. Only rarely, just over one time in a hundred tries of 100 light bulbs, would the average life exceed 1200 hours.

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2 years ago

The quotient of 15 and a number is 1 over 3 written as an equation

Agata [3.3K]

Answer:

15/x=1/3

Step-by-step explanation:

The quotient of 15 and a number=15/x=1/3

15/x=1/3

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2 years ago

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Triss [41]

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2x+4x-4x=2+4
2x=6
x=3

25-x=15-3x-10
3x-x= 15-10-25
2x= -20
x= -10

4x=2x+2x+5x-5x
2x+2x+5x-5x-4x
0 . no solution

8 0

1 year ago