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3 years ago

I need help I don’t get it

Mathematics

2 answers:

Ahat [919]3 years ago

6 0

Answer:

5 and 9

Step-by-step explanation:

3 multiplied by whatever z is plus 2 has to be 10 or more

ryzh [129]3 years ago

5 0

5 and 9 because z equals a number. 3(5)+2=17 so that’s over 10. 3(9)+2= 29. Using 5 and 9 as fillers would make the sum over the value of 10.

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The distance from the sun to the Andromeda galaxy is 1.2 x 10^19 miles. Light travels at a speed of 5.88 x 10^12 miles per year.

charle [14.2K]

Answer:

$2.04\times 10^{6}\ years$

Step-by-step explanation:

Given:

Distance from Sun to Andromeda galaxy (D) = $1.2\times10^{19}\ miles$

Speed of light (s) = $5.88\times 10^{12}\ miles\ per\ year$

Now, we need to find the time required for light to reach the galaxy from the Sun.

Let the time be 't' years.

Now, we know that, distance traveled by the light will be equal to the product of its speed and time taken by it. Therefore, framing in equation form, we get:

$Distance=Speed\times Time\\\\D=s\times t$

Now, plug in the given values and solve for time 't', This gives,

$1.2\times 10^{19}=5.88\times 10^{12}\times t\\\\t=\frac{1.2\times 10^{19}}{5.88\times 10^{12}}\ years\\\\t=2.04\times 10^{6}\ years$

Therefore, light will reach the Andromeda galaxy in $2.04\times 10^{6}\ years$ .

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3 years ago

The population of a city has decreased by 33% since it was last measured. If the current population is 13,400, what was the prev

tankabanditka [31]

Answer:

8,978 People

Step-by-step explanation:

13,400 x 0.33 = 4,422

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7 0

3 years ago

Simplify the expression by combining like terms: x + 7x

Aneli [31]

Answer:

Like terms means that the numbers have the same variable after them or they don't have a variable at all. It is also important to remember that any letter that doesn't have a number in front of it technically has a 1 in front of it.

For example, x + 3x = 1x +3x. Then I add the numbers in the front and I get 4x.

If it had been 4x + 7x + 3, my answer would have been 11x +3. That's because there were a total of 11 x, but the 3 ones weren't x's so I just leave them alone.

Step-by-step explanation:

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3 years ago

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Paul [167]

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