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2 years ago

8 is what percent of 1000

Mathematics

2 answers:

Grace [21]2 years ago

5 0

It is 0.8%!!
hope this helps

MrRissso [65]2 years ago

3 0

Answer: 80

Step-by-step explanation:

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David hikes 2 ¼ miles in ½ an hour at this rate, how long will it take him to walk 18 miles?

8090 [49]

So in 30 min will hike 2 1/4 miles =9 of those 1/4 miles therefore in 10 min will hike 9/3 =3 of those 1/4 miles = 3/4 of a mile

3/4 mile in 10 min;
(3/4)• 4 = 3 miles in 40 min;
6 miles in 80 min;
9 miles in 120 min;
12 miles in 160 min;
15 miles in 200 min;
18 miles in 240 min or 4 hours

5 0

3 years ago

Two trains start from Fort Worth traveling at the same speed. The trip for Train W takes 20 hours, while the trip for Train Z ta

MrMuchimi

Answer:

The equation that best models this situation is :

b. $\frac{x}{20}=\frac{x+400}{25}$

Distance traveled by Train W = 1600 miles

Distance traveled by Train Z = 2,000 miles

Step-by-step explanation:

Given:

Time taken for Train W to complete a trip = 20 hours

Time taken for Train Z to complete a trip = 25 hours

The city Train Z is traveling to is 400 miles farther away than the city Train W is traveling to.

both trains have same speeds and start from same location.

To find the distance in total each train travels.

Solution:

<em>Let length of the trip of Train W be </em>= $x$ miles

Speed of Train W can be given as :

⇒ $\frac{Distance}{Time}$

⇒ $\frac{x}{20}\ miles/h$

<em>So, the length of the trip of Train Z will be</em> = $(x+400)$ miles

Speed of Train Z can be given as :

⇒ $\frac{Distance}{Time}$

⇒ $\frac{x+400}{25}\ miles/h$

Since the speeds are same, so the equation to find $x$ can be given as:

⇒ $\frac{x}{20}=\frac{x+400}{25}$

Solving for $x$

Multiplying both sides by 100 to remove fractions.

⇒ $100\times \frac{x}{20}=100\times \frac{x+400}{25}$

⇒ $5x=4(x+400)$

Using distribution.

⇒ $5x=4x+1600$

Subtracting both sides by $4x$

⇒ $5x-4x=4x-4x+1600$

⇒ $x=1600$

Thus, Distance traveled by Train W = 1600 miles

Distance traveled by Train Z = $1600+400$ = 2,000 miles

3 0

3 years ago

√10 Multiple √15 is equal to

Paul [167]

$\\ \sf\longmapsto \sqrt{10}\times \sqrt{15}$

$\\ \sf\longmapsto \sqrt{10\times 15}$

$\\ \sf\longmapsto \sqrt{2\times 5\times 3\times 5}$

$\\ \sf\longmapsto \sqrt{5\times 5\times 6}$

$\\ \sf\longmapsto 5\sqrt{6}$

None of the above should be 4th option

8 0

3 years ago

three-fifths of the members of the Spanish club are girls there are a total of 30 girls in the Spanish club which statements can

Neporo4naja [7]

Answer:

$\frac{3}{5}x=30$ or $\frac{3}{5}(\frac{5}{3})x=30(\frac{5}{3})$ or x = 50

Step-by-step explanation:

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3 years ago

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Someone explain to me what y=mx+b please

antoniya [11.8K]

Y=mx+b is The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.

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3 years ago

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