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Y_Kistochka [10]
2 years ago
12

20 is 50% of what number? If necessary, round to the nearest tenth.

Mathematics
2 answers:
faust18 [17]2 years ago
5 0

Answer:

40

Step-by-step explanation:

20 divided by 50% is 40

Brainliest?

kotykmax [81]2 years ago
3 0

Answer:

20 is 50% of 40.

Step-by-step explanation:

1% = 1/100

50% = 50/100 or 1/2

1/2 = 20/n

1*20/2*20 = 20/n

20/40 = 20/n

n = 40

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Solve x+y=7 and 3x-2y=11 using elimination
BartSMP [9]
X=5 and y =2.
Here's how you do it.
Multiply the first equation by -3, and the second one by 1.
add the equations to eliminate x.
then solve for y by dividing both sides by -5, which gives us 2.
to solve for x subsitute 2 in for y.

8 0
4 years ago
A city has a population of 310,000 people.Suppose that each year the population grows by 6.5% . What will the po
brilliants [131]

Answer:

546,397 people

Step-by-step explanation:

We solve for the above question, using the formula for Exponential growth

The formula is given as

P(t) = Po (1 + r)^t

Po = Initial population = 310,000

r = Exponential growth rate = 6.5% = 0.065

t = Time in years = 9

P(t) = Population size after time t

Hence:

P(t) = 310,000 × (1 + 0.065)⁹

P(t) = 546,396.82088 people

Approximately =546,397 people

The population will be 546,397 people after 9 years.

4 0
3 years ago
Lily invested $750 in a savings account and earned $225 in interest at the end of 5 years. 
Georgia [21]
Your answer is 6%
because 6% =0.06 x  750 =45
45x 5 (years)=225
 
5 0
3 years ago
Read 2 more answers
The ratio of the angles in a triangle is 5:9:10. what is the measure of the largest angle?
Maksim231197 [3]

The measure of the largest angle is 75 degrees.

<h3>What is a triangle? </h3>

A triangle is a polygon with three sides and vertices. The sum of angles in a triangle is 180 degrees. Types of triangles include: right-angled triangle, isosceles triangle, equilateral triangle and scalene triangle.

<h3>What is the measure of the largest angle? </h3>

The measure of the largest angle = (largest ratio / sum of ratios) x 180

10 / 24 x 180 = 75 degrees

Please find attached an image of a triangle. To learn more about a triangle, please check: brainly.com/question/9329354

6 0
3 years ago
If the measures of the angles of a quadrilateral are in the ratio of 3 : 4 : 5 : 8, find the measure (in degrees) of each angle.
BabaBlast [244]

Answer:

sorry just came here for the points

Step-by-step explanation:

6 0
3 years ago
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