alvin is 13 years older than elga. the sum of their ages is 107. what is elga's age

Answers

Answer 1
alvin is 94 years old!
Answer 2
a = e + 13
a + e = 107

e + 13 + e = 107
2e + 13 = 107
2e = 107 - 13
2e = 94
e = 94/2
e = 47 <=== elga's age

a = e + 13
a = 47 + 13
a = 60....alvin's age

Related Questions

The vertices of the feasible region represented by a system are (0, 100), (0, 80), (80, 60), (80, 0), and (120, 0). What are the minimum and maximum values of the objective function F = 8x + 5y?

Answers

Sent a picture of the solution to the problem (s).

The minimum and maximum values of the objective function f = 8x + 5y are 400 and 960

How to determine the minimum and the maximum values?

The vertices of the feasible region are given as:

(0, 100), (0, 80), (80, 60), (80, 0), and (120, 0)

The objective function is given as:

z = 8x + 5y

Calculate the value of the objective function using the vertices

F = 8 * 0 + 5 * 100 = 500

F = 8 * 0 + 5 * 80 = 400

F = 8 * 80 + 5 * 60 = 940

F = 8 * 80 + 5 * 0 = 640

F = 8 * 120 + 5 * 0 = 960

The minimum value above is 400 and the maximum value is 960

Hence, the minimum and maximum values of the objective function F = 8x + 5y are 400 and 960

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MODEL WITH MATHEMATICS
Write a problem about a real-world situation in which you would either write a percent as a decimal or write a decimal as a percent.

Answers

When you go shopping and there's a sale, you would want to check the price of an item you want to buy after the sale. So you would convert the percent that the store says you get off, and convert it to a decimal. Then you use the decimal and multiply it with the original price. What you get from that, subtract from the original price. Now you have the price with the discount. AND you just converted a percent to a decimal in real life. Lol I always do this when I go shopping

When two parallel lines are cut by a transversal, angles A and B are alternate interior angles that each measure 105°. What is the measure of each of the other alternate interior angles?
75°
90°
105°
180°

Answers

The two adjacent alternate interior angles make up a straight line, which equals 180 degrees.

Therefore the sum of the angles must be 180.

x + 105 = 180

x = 180 - 105 = 75

The measure of the other alternate angles is 75.

The measure of each of the other alternate interior angles is; 75°

How to find the Alternate Interior Angle?

We know that according to Angle theorems, two adjacent alternate interior angles make up a straight line. Sum of angles on a straight line equals 180°.

Thus, if the measure of the other interior angle is x, then we have;

x + 105 = 180

x = 180 - 105

x  = 75°

The measure of the other alternate angles is 75°.

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Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2 h, and Car B traveled the distance in 1.5 h. Car B traveled 15 mph faster than Car A. How fast did Car B travel? (The formula R·T=D , where R is the rate of speed, T is the time, and D is the distance can be used.)

Answers

the answer to this question 
is 60mph 

Write the following ratio using two other notations. 5/9 Use only the numbers above (not any others).

Answers

5:9 and 5 to 9 are two other ways to write the fraction 5/9.

I hope this helps:)
Final answer:

The ratio 5/9 can be expressed as a decimal (0.555) or as a percentage (55.6%).

Explanation:

The given ratio is 5/9.

Decimal: A decimal is a way of expressing a number with a fractional part. It is based on powers of 10. For example, the decimal number 0.5556 means 5/10 + 5/100 + 5/1000 + 6/10,000.

Percentage: A percentage is a way to express a number as a fraction of 100. For example, the percentage 55.56% is equivalent to the fraction 55.56/100, which means 55.56 out of every 100.

We can express this ratio using two other notations:

As a decimal: 5/9 ≡ 0.555As a percentage: 5/9 ≡ 55.6%

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Explain how u would use repeated subtraction to find 8÷2

Answers

If you are dividing by 2, you subtract 2 times. 8-2-2=4. It is the same as 8/2=4.
8 divided by 2 is four...
8-2=6-2=4-2=2-2=0

Build the fraction to an equivalent fraction with the specified denominator. State the numerator. 5/12 = ?/60

Answers

The answer is 5/12 = 25/60

You have to bake a lot of brownies for your 6th-grade fundraiser! Although you have plenty of flour, cocoa, milk, and oil, you only have 8 1/2 sticks of butter. You need to know how many batches you can make, based upon your limited amount of butter. You can cook partial batches to use up every bit of butter and make the most brownies possible. Each batch needs 3/4 of a stick of butter. 4 How many batches of brownies can you bake? Justify your answer using equations, models, and/or words to explain your mathematical reasoning.

Answers

Alright, what you need to do is divide the total amount of butter (8.5 sticks) by the amount required for each batch of brownies (.75 sticks). BTW, I put the fraction into decimals to make it easier; I'll covert the numbers back at the end. Next step: 8.5/.75. You can do this on paper, but I suggest using a calculator; it is a lot easier. If you use a calculator, you'll see the answer will be 11.3, with a line above the 3. This is a repeating decimal, but it isn't relevant to the problem. Since the question asked how many batches we could make, round 11.3 to the nearest whole number which is 11. So, you can make 11 batches of brownies with 8 1/2 sticks of butter.
Hope this helps!

11 1/3 is the answer

Factor the expression completely:
x³ - 3x² - 4x + 12

Answers

see attached picture for answer:

The product of 5 and a number x is 14 . What is the value of x?


x=194
x=120
x=54
x=434

Answers

5x = 14
  x = 14/5

I don't see any of those choices above matched my answer.
its b 1/20 i just took the test

Jackson has 50 megabytes (MB) of space left on his smartphone. He can download songs that each use 3.5 MB or videos that each use 7 MB. He wants to download at least 10 new media files. Which pair of inequalities specifies the number of song files, x, and the number of video files, y, that Jackson can download

Answers

The number of song files Jackson can download: x

The number of video files Jackson can download: y



x song files occupy a space of 3.5MB per file, times x files = 3.5x MB

y media files occupy a space of 7MB per file, times y files = 7yMB


(3.5x + 7y) MB must be at most 50 MB, since there is 50 MB left,

this can be represented by the inequality: [tex]i) \ \ 3.5x+7y \leq 50[/tex]


Jackson wants to download at least 10 media files, so y must be at least 10

this means that [tex]ii) \ \ \ y \geq 10[/tex]


Answer: [tex]i) \ \ 3.5x+7y \leq 50\\\\ii) \ \ \ y \geq 10[/tex]


Answer:

[tex]3.5x+7y\leq 50[/tex]

[tex]x+y\geq 10[/tex]

Step-by-step explanation:

Given : Jackson has 50 megabytes (MB) of space left on his smartphone. He can download songs that each use 3.5 MB or videos that each use 7 MB. He wants to download at least 10 new media files.

To find : The pair of inequalities specifies the number of song files, x, and the number of video files, y, that Jackson can download.

Solution :

The number of song files Jackson can download is x

The number of video files Jackson can download is y

→ x song files occupy a space of 3.5 MB per file,

So, number of space occupy by songs files = 3.5x MB

→ y media files occupy a space of 7 MB per file,

So, number of space occupy by video files = 7y MB

→ The total amount of MB used is [tex]3.5x+7y[/tex]

Jackson has 50 megabytes (MB) of space left on his smartphone.

The total amount must be less than or equal to 50 MB,

which can be represented as [tex]3.5x+7y\leq 50[/tex]

Jackson wants to download at least 10 media files,

which means [tex]x+y\geq 10[/tex]

Therefore, The two inequality form is

[tex]3.5x+7y\leq 50[/tex]

[tex]x+y\geq 10[/tex]                                                      

If two circles have the same circumference what do you know about their area

Answers

If the circumference is half of the perimeter than the area for both circles would be half of them find one circles area and half it

The population of a town grows at a rate proportional to the population present at time t. the initial population of 500 increases by 15% in 10 years. what will be the population in 50 years? (round your answer to the nearest person.)

Answers

This is a case of exponential growth.  The appropriate equation, with the given data inserted, is     P(t) = 500 ( 1+0.15)^50

or                                   = 500 (1.15)^50

Evaluate this on your calculator.

Trevor earns $7.80 an hour take home pay and works 20 hours each week. Trevor wants to buy a new laptop computer to take to college that costs $780. How many weeks will it take for Trevor to achieve his goal?

Answers

it would take him 5 weeks. why?
7.89*20= $156 per week
156*5 weeks= $780

Answer: 5 weeks

Step-by-step explanation:

There are two pizzas. Conor ate 1⁄4 of a pizza, Brandon 2⁄8, Tyler 3⁄4, and Audrey4⁄8. Who ate the most of the two pizzas? 

       A. Audrey   B. Tyler   C. Brandon   D. Conor

Answers

B. Tyler ate the most of the two pizzas. 
First, get them all to have the same denominator.
Conor- 1/4
Brandon- 2/8 = 1/4
Tyler- 3/4
Audrey- 4/8 = 2/4

Out of all these, the person who ate the most was Tyler, at 3/4 of the pizzas.
B. Tyler

Vertex A in quadrilateral ABCD lies at (-3, 2). If you rotate ABCD 180° clockwise about the origin, what will be the coordinates of A′ of the rotated quadrilateral A′B′C′D′?

Answers

Answer:

The coordinate of A' after rotated through 180° is (3,-2)

Step-by-step explanation:

Given vertex A in a quadrilateral ABCD lies at (-3,2). Now we have to rotate the quadrilateral ABCD  180° clockwise about the origin.

The  point (x,y) is when rotated about the origin through 90° in clockwise direction then the new position will be (y,-x).

Now,the point A which is given is (-3,2)

First after rotation through 90° the new point will be (2-(-3)) = (2,3)

Again this point further rotated through 90° or we can say that rotation after 180° then the new point become A' =  (3,-2).

Hence, The coordinate of A' after rotated through 180° is (3,-2)

the coordinates of A′ after a 180° clockwise rotation about the origin will be (3, -2).

To solve this problem, we need to apply a 180° clockwise rotation to the point (-3, 2). A 180° clockwise rotation about the origin will map any point (x, y) to the point (-x, -y).

The coordinates of the original point are:

A (-3, 2)

Apply the rotation rule, the new coordinates will be:

[tex](-(-3), -(2)) = (+3, -2)[/tex]

Therefore, the coordinates of A′ after a 180° clockwise rotation about the origin will be (3, -2).

It is estimated that each guest at a party will eat
9/10 pounds of chocolates. How many guests can be served with 45 pounds of chocolate?

Answers

[tex]\bf \begin{array}{ccll} guests&\stackrel{lbs}{chocolate}\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&\frac{9}{10}\\\\ g&45 \end{array}\implies \cfrac{1}{g}=\cfrac{\frac{9}{10}}{45}\implies \cfrac{1}{g}=\cfrac{\frac{9}{10}}{\frac{45}{1}}\implies \cfrac{1}{g}=\cfrac{9}{10}\cdot \cfrac{1}{45} \\\\\\ \cfrac{1}{g}=\cfrac{9}{450}\implies \cfrac{1\cdot 450}{9}=g[/tex]

and pretty sure you know how much that is.

40 miles x 25 min.=?mph

Answers

[tex]\bf \stackrel{miles}{40}~in~\stackrel{minutes}{25}\implies \cfrac{40~miles}{25~\underline{minutes}}\cdot \cfrac{60~\underline{minutes}}{hr}\implies \cfrac{40\cdot 60~miles}{25~hr} \\\\\\ \cfrac{2400}{25}\cfrac{miles}{hr}\implies 96\frac{miles}{hr}[/tex]

The recommended weight of a soccer ball is 430 grams. The actual weight is allowed to vary by up to 20 grams.

a. Write and solve an absolute value equation to find the minimum and maximum acceptable soccer ball weights. Use x
as the variable.
The recommended weight of a soccer ball is 430 grams. The actual weight is allowed to vary by up to 20 grams.

a. Write and solve an absolute value equation to find the minimum and maximum acceptable soccer ball weights. Use x
as the variable.

Answers

For this problem, let's assign variable x to the value of the actual weight. The recommended weight is the central value of the range. So, the variation must be 20 grams below and above the recommended weight. The equation would be:

Actual weight = |Recommended weight +/- 20|
x = |430 +/- 20|

Answer:

The required absolute equation is: |x-430|=20

The minimum and maximum acceptable soccer ball weights is 410 grams and 450 grams respectively.

Step-by-step explanation:

Consider the provided information.

The recommended weight of a soccer ball is 430 grams. The actual weight is allowed to vary by up to 20 grams.

Let x is the actual weight of the soccer ball.

The difference of actual weight and recommended weight can vary by 20 grams.

Thus, the required absolute equation is:

|x-430|=20

x-430=20 or x-430=-20

x=450 or x=410

The minimum and maximum acceptable soccer ball weights is 410 grams and 450 grams respectively.

Evaluate. Write in simplest form.
6 - b for a = 10, b = –9
--------
3a
A.1/2

B.-/310
C.1/10

D. 2 HELP ME BROS

Answers

6 - b 

6 - (-9)

6+9 = 15

3a

3(10)

30

15/30 = 1/2

your answer should be A 1/2 

hope this helps

(hard.) in a certain psychology experiment, each subject is presented with three ordinary playing cards, face down. the subject takes one of these cards. the subject also takes one card at random from a separate, full deck of playing cards. if the two cards are from the same suit, the subject wins a prize. what is the chance of winning

Answers

The answer to this question would be 1/4
To answer this question you need to know what the same suit means and how many cards in a deck is. In the standard card, there are 52 cards in a deck. The deck also compromised of 4 suit which was clubs (♣),  hearts (♥), spades (♠) and diamonds (♦), Each suit has the same number ratio from those 52 cards, which mean 13 cards for each suit.
In this test, the subject takes one of three cards first. There is no information about this card, so we can assume that it is completely random and having one of the 4 available suits. After that, the subject takes a card from the separate full deck.
Then the chance to get the same suit would be 13/52= 1/4 chance

How many ways are there to pick a starting five from a basketball team of twelve members

Answers

Answer:

95040

Step-by-step explanation:

Given : There are 12 members in basketball team.

To Find: How many ways are there to pick a starting five from a basketball team of twelve members

Solution:

Since we are asked to find no. of ways are there to pick a starting five from a basketball team of twelve members

So, we will use permutation over here.

Formula: [tex]^nP_r=\frac{n!}{(n-r)!}[/tex]

n = 12

r = 5

Substitute the value sin the formula .

[tex]^{12}P_5=\frac{12!}{(12-5)!}[/tex]

[tex]^{12}P_5=\frac{12!}{(7)!}[/tex]

[tex]^{12}P_5=\frac{12 \times 11\times 10 \times 9\times 8 \times 7!}{7!}[/tex]

[tex]^{12}P_5=12 \times 11\times 10 \times 9\times 8[/tex]

[tex]^{12}P_5=95040[/tex]

Hence there are 95040 ways to pick a starting five from a basketball team of twelve members.

There are  95040 different ways to pick a starting five from a basketball team of twelve.

What are permutation and combination?

A permutation is an arrangement of things where order matters, AB and BA are two different permutations.

The combination is a selection of things where order does not matter, AB and BA are the same combinations.

Given, The no. of ways to pick a starting five from a basketball team of twelve members.

As stated pick a starting five we'll use permutation.

∴  The no. of ways to pick a starting five from a basketball team of twelve members is [tex]^{12}P_5[/tex].

= 12!/(12 - 5)!.

= 12!/7!.

= 12×11×10×9×8.

= 95040 different ways.

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Sylvia bought 8 tickets to a concert. Each ticket costs $18. To find the total cost in dollars, she added the product 8×10 to the product 8×8, for a total of 144. Which property did Sylvia use?

Answers

Sylvia wanted to find the total cost in easier way.
8 x 10 + 8 x 8 = 80 + 64 = 144
She used the Distributive property:
a x ( b + c ) = a x b + a x c
8 x 18 = 8 x ( 10 + 8 ) = 8 x 10 + 8 x 8 = 80 + 64 = 144
Answer:
Distributive property.

Answer:

distributive property

Step-by-step explanation:

im tired i just solved the problem good bye

The relationship 1/sin(θ) is equivalent to which of the following trigonometric functions?

A. cot(θ)
B. csc(θ)
C. arcsin(θ)
D. sec(θ)

Answers

[tex]\bf sin(\theta)=\cfrac{1}{csc(\theta)} \qquad % cosine cos(\theta)=\cfrac{1}{sec(\theta)} \qquad % tangent tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)} \\\\\\ % cotangent cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)} \qquad % cosecant \boxed{csc(\theta)=\cfrac{1}{sin(\theta)}} \qquad % secant sec(\theta)=\cfrac{1}{cos(\theta)}[/tex]

Answer:

Option B is the correct answer.

Step-by-step explanation:

We have the following trigonometric relations

      [tex]cosec\theta =\frac{1}{sin\theta }\\\\sec\theta =\frac{1}{cos\theta }\\\\cot\theta =\frac{1}{tan\theta }\\\\cot\theta =\frac{cos\theta}{sin\theta }\\\\tan\theta =\frac{sin\theta}{cos\theta }[/tex]

Here cosec θ is the correct answer.

Option B is the correct answer.

2 times as much as 4 is

Answers

The answer is 8.

To solve the given mathematical question, we need to calculate twice as much as the number 4. The phrase  2 times as much as  indicates multiplication by 2. Therefore, we multiply the number 4 by 2 to find the result.

Mathematically, this can be represented as:

[tex]\[ 2 \times 4 = 8 \][/tex]

So, 2 times as much as 4 is 8.

A car drove 148 miles using 4 gallons of gasoline. How many gallons will it take to drive 9 1/4 miles?

Answers

It would take .25 gallon (or 1/4 gallon) to drive 9 1/4 mile.

A man in a rowboat that is a = 2 miles from the nearest point A on a straight shoreline wishes to reach a house located at a point B that is b = 8 miles farther down the shoreline (see the figure). He plans to row to a point P that is between A and B and is x miles from the house, and then he will walk the remainder of the distance. Suppose he can row at a rate of 2 mi/hr and can walk at a rate of 4 mi/hr. If T is the total time required to reach the house, express T as a function of x.

Answers

Alright, so by creating a right triangle with side a, point A, and point P,we can get that a^2+A^2 (if A is the distance from A to P) = P^2 (if P is the distance from P to the rowboat) using the Pythagorean Theorem. After that, we know that he will walk x miles to point B. Since b is A+x, we know that b=A+x and
b-x=A by subtracting x from both sides. Therefore, a^2+(b-x)^2=P^2 and by plugging a=2 and b=8 in, we get 2^2+(8-x)^2=P^2. To find out P, we square root both sides, getting P= sqrt(4+(8-x)^2). Since the man rows 2 miles per hour, we can divide P by 2 to get how much time it takes for him to travel to point P, resulting in sqrt(4+(8-x)^2)/2. In addition, we can divide x by 4 as the man walks 4 miles per hour, getting x/4. Adding them up, we get
sqrt(4+(8-x)^2)/2+x/4 as the amount of time it will take to get to point B

643=4×160+n in a related division form

Answers

n will be 3 and that is your answer

What two-dimensional cross-sections could we create by slicing the particular triangular prism

Answers

Rectangle and Triangle

Which transformation would change the point (5,3) into (-5,3)?

Answers

A transformation like this would be a reflection across the Y access. If you flip this point about the Y access, the Y will not change but you will get the inverse of the X.
Hope this helps! :D
Assuming it is on a grid map, (5,3) would be in the 1st quadrant. and (-5,3) would be in the 2nd quadrant. You would have to move the coordinate 10 spaces to the left. 
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