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2 years ago

The sum of two numbers is 50. One number is 10 less than three times the other number. What are the two numbers?

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

5 0

Answer:

i think its C. 15 and 35. hope this helps :)

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84 is what percent of 105?

Nitella [24]

Answer: 80%

Step-by-step explanation:

How much is 84 out of 105 written as a percentage? Convert fraction (ratio) 84 / 105 Answer: 80%

3 0

3 years ago

What is (3.3 x 10^7) (5.2 x 10^8) in scientific notation?<br>

dolphi86 [110]

Answer:

Step-by-step explanation:

3.3x10^7 x 5.2x10^8 3.3x5.2 x 10^7+8 17.16x10^15 = 1.716x10^16

6 0

2 years ago

If 27^x=9/3^x ,then the value of x is

Korolek [52]

Answer:

x = 0.5

Step-by-step explanation:

Well, we have in this case a exponent equation

$27^{x} = \frac{9}{3^{x}}$

Factoring 27 = $3^{3}$

Our new equation is:

$3^{3x}=\frac{3^{2}}{3^{x}}$

Applying the property of exponents, on the right we'll have just like that:

$3^{3x} = 3^{2-x}$

now, it's easy to solve this equation. You must solve 3x = 2 - x because the basis of these exponents are equal.

3x = 2 - x

3x + x = 2

4x = 2

x = 1/2 or 0.5

5 0

3 years ago

A swimmer speeds up 1.9 m/s to 3.8 m/s during the last 11.0 seconds of the race. What is the acceleration of the swimmer?

Naddika [18.5K]

<h2>Given :-</h2>

Initial speed (v) = 1.9m/s

Final speed (u) = 3.8m/s

Time (t) = 11 s

<h2>Formula Used :-</h2>

$v = u + a×t$ (a = acceleration)

➾ $a = {\frac{u-v}{t}}$

<h2>Solution:-</h2>

$a = {\frac{u-v}{t}}$ (putting the value of v, u and t from above)

➾ $a = {\frac{3.8-1.9}{11}}$

➾ $a = {\frac{1.9}{11}}$

➾ $a = 0.17 m/s (approx.)$

Therefore, the acceleration rate = 0.17m/s.

8 0

1 year ago

50 POINTS!!!

Dahasolnce [82]

Answer:

63% of students

Step-by-step explanation:

Z = (X - μ) / σ

Z = 520 - 500 / 60

Z = 0.33

ON THE Z-TABLE

0.33 = 0.6293

<em>62.93% = 63% of students answer</em>

8 0

2 years ago