Mathematics College

melina walked 9/12 mile day dor 5 days. what was the total distance in 32 miles, she walked in the 5 days?

Answers

Answer 1
9/12 times 5 is 45/ 60 which is equal to 3/4 of a mile. I’m afraid I didn’t understand the question but I hope this helps.
Answer 2

Melina covered 15/4 miles in 5 days.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Melina walked 9/12 mile day.

If she walked 5 days then she covers

= 5 x 9/12

= 45/12

=15/4

Hence, 15/4 miles covered in 5 days.

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Related Questions

Which is a better buy? 20-ounce box of cereal for $3.60 or 28 ounce for $4.20?

Answers

28 oz for $4.20. Hope this helps :) 
Divide the price for each by the number of ounces to find the price per ounce.

PRODUCT 1:
=$3.60 ÷ 20
= $0.18 per ounce

PRODUCT 2:
= $4.20 ÷ 28
= $0.15 per ounce

ANSWER: The better buy is product two at $0.15 an ounce.

Hope this helps! :)

Divide the amounts in the ratio stated £40 in the ratio 2:3

Answers

There are 2+3 = 5 "ratio units", so each one stands for £40/5 = £8.

The division is £16 : £24.

A cell phone uses a 3.0 V battery. The circuit board it uses needs a 0.05 A current. What size resistor is needed to generate this current?

___ Ω

Answers

Ohm's law equation used to solve this problem is;
V = IR
where V - voltage
I - current passing 
R - resistance
voltage is the potential difference between 2 points and current passing through these 2 points is proportional to the potential difference, in other words voltage.
V∞I
Resistance is the constant in the equation 
the current required to pass through is 0.05 A (amperes)
the battery voltage is 3.0 V (volts)
substituting these values 
3 V = 0.05 A * R
R = 3/0.05 
R = 60 Ω (ohms)

Answer:

the answer is 60.

Step-by-step explanation:


Number of dinners = 125 Individual portion = 8 oz. Size of can = 32 oz. Number of cans required = _____. 2

Answers

To get total of oz for the dinner:

125 * 8 =  1000 oz

To get number of cans:

1000 ÷ 32 = 3.125 cans or at least 4 cans to served dinner

Answer:

Number of cans required = 32

Step-by-step explanation:

Number of dinners = 125

Individual portion size of each dinner = 8 oz.

Total portion size of all the dinners = 125 × 8

⇒ Total portion size of all the dinners = 1000 oz.

Size of one can = 32 oz.

[tex]\text{Number of cans required = }\frac{\text{Total portion size of dinner}}{\text{Size of each can}}\\\\\implies\text{Number of cans required = }\frac{1000}{32}\approx 31.25[/tex]

Hence, Number of cans required = 32

If a equals James's present age write an expression for his age seven years from now

Answers

A+7 hope it helps ^.^
I think the answer to this question is A+7.

what is the probability of randomly picking a girl without brown hair

Answers

6 girls have brown hair, and you want to know the probability of finding one without brown hair, so you take the population and subtract brown hair, or 22. You have a 22/28 chance of picking a girl without brown hair, simplified to 11/14.

A race car travels at a constant speed of 31m/s along a circular arc of radius 22m. What is the centripetal acceleration? a.) 1.41 m/s2 b.) 0.710 m/s2 c.) 43.7 m/s2 d.) 15.6 m/s2.

Answers

a is the correct answer

Answer:

C

The equation for this is a=v^2/r

when you plug in it is a=31^2/22=961/22=43.7m/s^2

Step-by-step explanation:

About 70% of Earth's surface is covered by water. If the diameter of earth is about 12,750km, find the area not covered by water to the nearest 100,000km^2.

Answers

A ≈ 0.30πd² ≈ 153,200,000 km²

What is the value of a for the following circle in general form? x^2+y^2+ax+by+c=0

Answers

Lets' solve for:  
X^2 + y^2 + ax + by + c = 0


Step 1: Add -x^2 to both sides

ax + by + x^2 + y^2 + c + - x^2 = 0 + - x^2

ax + by + y^2 + c = - x^2


Step 2: Add - y^2 to both sides

ax + by + y^2 + c +  - y^2 = - x^2 + y^2

ax + by + c = - x^2 - y^2


Step 3: Add - by to both sides

ax + by + c + by = - x^2 - y^2 +  - by

ax + c = - by - x^2 - y^2


Step 4: Add - c to both sides

ax + c + - c = by - x^2 - y^2 +  - c

ax = - by - x^2 - y^2 - c


Step 5: Divide both sides by x.

ax/x = - by - x^2 - y^2 - c/ x


a = - by - x^2 - y^2 - c/x



Answer is:


a = - by - x^2 - y^2 - c/x






Answer 2: 

This circle has a radius of [0 – (–6)]/2 = 3 and is centered at (–2, –3). Drawing a diagram is helpful for getting a grasp on this.

The standard equation for a circle is (x – h)^2 + (y – k)^2 = f^2, where h is the x-coordinate of the center, k is the y-coordinate, and r is the radius length. Substituting our values, the standard equation is:

(x + 2)^2 + (y + 3)^2 = 9

Now expand the squared binomials and reorder the terms to match the specified form:

(x + 2)^2 + (y + 3)^2 = 9
x^2 + 4x + 4 + y^2 + 6y + 9 = 9
x^2 + y^2 + 4x + 6y = 0

And there you go!



Final answer:

The 'a' in the equation refers to the coefficient influencing the horizontal shift of a circle's center. To find 'a', you often need specifics about the circle, such as its center or radius. When such information is provided, the quadratic formula can be used to solve it.

Explanation:

The given equation x2+y2+ax+by+c=0 represents the general form of a circle equation. The value of 'a' is a coefficient that impacts the horizontal shift of the circle along the x-axis. Unfortunately, without specific values attached, it is impossible to directly calculate 'a'. Nevertheless, if the equation is compared to the completed square form of a circle equation, i.e., (x-h)2+(y-k)2=r2, you can ascertain that 'a' would be -2h, where h is the x-coordinate of the circle's center.

In specific examples, for instance, if a = 1, b = 0.0211, and c = -0.0211, we can solve for x using the quadratic formula -b ± √b² - 4ac divided by 2a yielding -0.0211 ± √(0.0211)2 − 4(1)(−0.0211)/2(1), where 'a', 'b', 'c' are the coefficients from the equation of a circle in its general form.

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MATH HELP PLEASE HELP!!! XPERTS +

(CHECK OUT PROFILE FOR MORE UNANSWERED QUESTIONS)!!!!!!!

Answers

Point slope form is y=mx+b
M=the slope
B=the x intercept

So then the equation us y=2/5x+b
Then you solve for b by plugging in the point (-3,-6) for the x and y.
B= -36/5 or -7 1/5

Therefore the slope intercept form is y=2/5x-7 1/5
y = mx + b (this is the equation it has to fit in)
m = slope
b = y intercept
-6 = 2/5(-3) + b
-6 = -6/5 + b
b = -6 + 6/5
b = 4 4/5
-6 = 2/5(-3) + 4 4/5




using the same equation....
m = 1/3
x = 0
y = -2/5
-2/5 = 1/3(0) + b
1/3(0) = 0
-2/5 = b
y = 1/3x + -2/5


hope this helps

which of the following must be true?
check ALL that apply,

Answers

B and D are true.

_____
The Law of Cosines tells you
.. c^2 = a^2 +b^2 -2ab*cos(θ)
Your problem statement provides a relation involving c^2, so we can substitute to get
.. a^2 +b^2 > a^2 +b^2 -2ab*cos(θ)
.. 0 > -2ab*cos(θ)
.. cos(θ) > 0
In the range 0 ≤ θ ≤ 180°, cos(θ) will be positive for θ < 90°, an acute angle.
Thus A and C are false, B and D are true.

Tom and Sonya were comparing their answers on a math problem. It was an order of operations problem, and they each had a different answer. Tom had an answer of 11, and Sonya had an answer of 104. Which student correctly solved the order of operations problem given by the teacher?

(52 +6)–(7•4)+8

*Challenge: Can you nd the mistake that Sonya made in completing her problem?

Answers

Order of operations is PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

= (52 + 6) - (7 * 4) + 8
work inside parentheses first
= 58 - 28 + 8
work left to right now
= 30 + 8
= 38

SONYA'S MISTAKE
= (52 + 6) - (7 * 4) + 8
I think she added the 52, 6+4, multiplied 7*4 to equal 28, then added the 6+8 to equal 14
= 52 + 28 + 14 + 10
= 104

ANSWER: 38

Hope this helps! :)

At Central High School, there are 60 football players and 25 cheerleaders. What is the ratio of cheerleaders to football players? please slimlfy

Answers

the   simplified ratio is 5/12

Answer:

The answer is 5:12

Step-by-step explanation:

PLZ HELP
The price of a technology stock was 9.83
yesterday. Today, the price fell to 9.72
. Find the percentage decrease. Round your answer to the nearest tenth of a percent.


@nilbert

Answers

The percentage change can be found from
  percent change = ((new value)/(original value) - 1) × 100%
For your numbers, that is
  percent change = ((9.72/9.83) - 1) × 100% = -0.01119... × 100%

The decrease in value is about 1.12%

an investment is expected to pay 5 per year compounded continuously. If you want the value of the investment to be $700,000 after 25 years, how much should you invest initially? Round to the nearest dollar

Answers

The multiplier for continuous compounding is e^(rt). You want
  700,000 = P·e^(0.05·25) ≈ 3.490343P
Then
  700,000/3.490343 = P

You should invest $200,553 initially.

Dr. Adama is a botanist . She measures thhe daily hieght of a particular variety of sunflower,Sunny yellow,begining when thesunflower is 60 days old. At 60 days,the height of the sunflower is 205 centimeters. Dr. Adama finds that the growty rate ofthis sunflower is 2 centimeters per day after the first 60 days.

Answers

What is the question? :)

the school library has 97 books about space. John and 3 of his friends, each check out 9 books. how many space books are still in school libarary?

Answers

The answer is 70 books in the library
3 times 9 equals equals 27. 97 minus 27 equals 70. Final answer is 70

Identify the reflection rule on a coordinate plane that verifies that triangle A(-1,7), B(6,5), C(-2,2) and A'(-1,-7), B'(6,-5), C'(-2,-2) triangle are congruent when reflected over the x-axis.

Answers

Final answer:

The reflection rule over the x-axis is when a point (x, y) reflects to (x, -y). Applying this rule to triangle A(-1,7), B(6,5), C(-2,2) gives us the reflected points that match the coordinates of A'(-1,-7), B'(6,-5), C'(-2,-2), proving the triangles are congruent.

Explanation:

The student is querying about the reflection of a triangle over the x-axis on a coordinate plane, specifically within the domain of Mathematics. To demonstrate that triangles A(-1,7), B(6,5), C(-2,2) and their reflected counterparts A'(-1,-7), B'(6,-5), C'(-2,-2) are congruent, we will use the reflection rule associated with reflections over the x-axis.

The reflection rule states that when a point (x, y) is reflected over the x-axis, the resulting point will be (x, -y). Applying this rule:

For point A(-1, 7), the reflection over the x-axis would be A'(-1, -7).

For point B(6, 5), the reflection would be B'(6, -5).

For point C(-2, 2), the reflection would be C'(-2, -2).

The reflected points A', B', and C' match the coordinates given for the congruent triangle, thus confirming the triangles are congruent using the reflection rule over the x-axis.

Jean adds 35 and 9. How can she solve using only equations to model her thinking?

Answers

since she only has a two digit number and a one digit number she will be able to create one or two equations. 
 
35+9=44
Or she may want to break up the two digit number into two or more parts, for example:  (5×6) + (1×5) + 9 = 44  or  (7×5) + 9 = 44


Tetsuo's savings account has a balance of $1192. After 22 years, what will the amount of interest be at 1.5% compounded annually?
a.
$2622.40
c.
$467.98
b.
$450.98
d.
$461.98

Answers

D. $461.98 I think would be the answer. 

if 100 envelopes cost 70 cents, how much would 250 cost?

Answers

1.75! If you add together 200, and then half of 100, it’s easy!

PLZ HELP.ONLY ANSWER IF YOUR 100% SURE. which equation represents a non proportional situation? A. y = 4x B. y = 5x - 1 C. y = 16x D. y = -8x

Answers

y = 5x - 1

-1 is a y-intercept

if there is a y-intercept, it is non proportional


Hope I helped

Let me know if you need anything else!

~ Zoe
the answer is b because the y-intercept is -1

Can someone help me please!!

Answers

To factor a trinomial, first we should factor out the GCF, or greatest common factor, shared by all of the coefficients and constants.  The greatest common factor of -3, -21, and -30 is -3, therefore, this is the number we must factor out first.

When we factor out the GCF of -3, we get:
-3(q^2 + 7q + 10)

Next, we must look for two numbers that will serve as coefficients for the variables in factored form.  These two numbers must add to 7 (the middle term) and multiply to 10 (the constant or last term).  The two numbers that satisfy these parameters are 5 and 2.

Therefore, we must use these numbers to create factors of the innermost factor that we have left, to get:

-3(q+5)(q+2)

The above expression is your final answer, because you cannot factor any more.  And remember: you can always check to make sure that your factoring is correct by multiplying out the factors and making sure you get your original trinomial.

I hope this helps!

Evaluate the expression 28C14

Answers

For choose notation, you...
xCy = x! / (x-y)! y!
! means factorial

(28 x 27 x 26...x 3 x 2 x 1)/(14 x 13 x 12...x 3 x 2 x 1)(14 x 13 x 12...x 3 x 2 x 1) = 40116600

PLZZZ HELP!!!! 15POINTS


In the coordinate plane, what is the length of the line segment that connects points at (4, −1) and (9, 7) ? Enter your answer in the box. Round to the nearest hundredth. units

Answers


9.43
 pls give me brainiest

Answer:

9.43 is correct I've taken the test on k-12

Step-by-step explanation:

Find the value of x°

25°

85°

75°

105°

Answers

180 - 155 = 25

25 + 80 = 105

180 - 105 = 75

x = 75


Hope I helped!

Let me know if you need anything else!

~ Zoe (Rank:'Genius')
You know that the angle that is in the smaller triangle is supplementary to 155 because they are on the same line. So that angle is 25. 

You know that the sum of angles in a triangle is 180. 
So, x + 80 + 25 = 180
x + 105 = 180
x = 75 degress

in the science center there were 236 butterflies in the fall and 128 more butterflies in the winter. in the spring ,there were 85 fewer butterflies .how many butterflies are in the science center now

Answers

279 butterflies if I’m correct. 236+128=364 and 364-85 is 279.

What is the approximate volume of a cylinder with a radius of 2 centimeters and height of 10 centimeters? Drag and drop the answer into the box.


A. 125.6

B. 251.3

C. 502.7

D. 1005.3

Answers

Formula
V = pi * r^2 h

where
V = ??
pi = 3.14
r =  2 cm
h = 10 cm
V = 3.14 * 2*2 * 10
V = 3.14 * 4 * 10
V = 125.6 cm^3 
Choice A <<<<====

Answer:

125.6

Step-by-step explanation:

the angles formed by two perpendicular lines have a measure of

Answers

Hi there!

Angles of perpendicular lines are always 90 degrees. 

Hope this helps!

the average number of minutes that it took jermaine to complete his homework assignments for a week in september was 27 minutes, with a mean absolute deviation of 4 minutes. with this informatiom, which statement is true. Pls someone help me

Answers

Answer:

On average, Jermaine spent between 23 and 31 minutes on his homework.

On average, Jermaine spent between 23 and 31 minutes on his homework.

What is Mean absolute deviation?

This is defined as the average of the absolute deviations from a central point.

In this scenario, the mean absolute deviation

= 27 ± 4 minutes

= 27+4 or  27 - 4

= 31 or 23 minutes.

Therefore we can infer that Jermaine spent between 23 and 31 minutes on his homework.

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