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3 years ago

Ryan completed 1/8 of his test in 2/5 hour. If Ryan’s rate stayed the same, how much of his test was finished in one hour

Mathematics

2 answers:

gladu [14]3 years ago

7 0

Answer:

5/16

Step-by-step explanation:

In 5/2 the time, we expect that 5/2 × 1/8 = 5/16 of the test will be complete.

_____

5/2 × (2/5 h) = 1 h

svp [43]3 years ago

7 0

Answer:5/16

Step-by-step explanation: In 5/2the time, we expect that 5/2 *1/8= 5:16

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Which equation has no solution?

Natasha2012 [34]

Answer:

equation 1 has no solution

Step-by-step explanation:

when you compare each of the equations, all the equations gives a correct answer with the exception of equation 1

8 0

1 year ago

1. The sum of a two-digits number is 13. The tens digit is 8 less than twice the units digit. What is the number?

alexgriva [62]

Answer:

The number is 67

Step-by-step explanation:

Equations

Let's consider the number 83. The tens digit is 8 and the unit digit is 3. Note the tens digit's addition to the number is 80, and the unit's addition is 3. This means the tens digit adds 10 times its value, that is, 83 = 8*10 + 3.

Now, let's consider the number ab, where a is the tens digit, and b is the unit digit. It follows that

Number=10*a+b

The question gives us two conditions:

1) The sum of a two-digits number is 13.

2) The tens digit is 8 less than twice the units digit.

The first condition can be expressed as:

a + b = 13 [1]

And the second condition can be written as:

a = 2b-8 [2]

Replacing [2] into [1], we have:

2b-8 + b = 13

Operating:

3b = 13 + 8

3b = 21

Solving for b:

b = 21 / 3 = 7

Substituting into [2]:

a = 2*(7) - 8 = 6

Thus, the number is 67

3 0

3 years ago

Solve 3x2 + 4x = 2 I need it solved with the quadratic formula

lisabon 2012 [21]

3x2+4x=2
6+4x=2
-6 -6
4x=-4
4 4
x=-1

8 0

3 years ago

Point F is a centroid of the triangle BDE. If AB = 24 cm, what is BE?

Alex17521 [72]

Answer: i know this is way late, but it’s 48

Step-by-step explanation:

Since point A is the separation of BE, both sides of the separation are equivalent, the are congruent. Since AB=24, you add 24+24 to get 48.

(I also just answered this question on homework and got it right, this is just how I did it.)

4 0

3 years ago

The last customer of the day calls telling you they purchased 96 meters of fencing to fence in a

Lilit [14]

Answer:

Area = 733 m² (to the nearest meter)

Step-by-step explanation:

Formulae

Circumference of a circle = 2 $\pi$ r
Area of a circle = $\pi$ r²

(where r is the radius of the circle)

Find the radius

circumference = 96 m

Using the circumference of a circle formula:

⇒ 2 $\pi$ r = 96

⇒ $\pi$ r = 96 ÷ 2 = 48

⇒ r = 48 ÷ $\pi$ = 48/ $\pi$

Find the area

radius r = 48/ $\pi$

Using the area of a circle formula:

⇒ A = $\pi$ r²

⇒ A = $\pi$ (48/ $\pi$ )²

⇒ A = 2304/ $\pi$

⇒ A = 733.3859778...

⇒ A = 733 m² (to the nearest meter)

6 0

3 years ago