Right now Seth’s age is 4/5 the age of his brother Eric. Twenty-one years ago, Eric was twice as old as Seth. What are their ages now?

Answers

Answer 1

Answer: We are told that 21 years ago, Eric was twice as old as Seth. So, Eric was 2{(4/5)x-21} years old 21 years ago (just multiply Seth's age 21 years ago by 2).

Step-by-step explanation:


Related Questions

La finca de federico tiene un area de 576 m2 , en ella ha sembrado naranja y cafe, 3/8 de la finca estan sembrados de naranjas y el resto de cafe, ¿ cual es el area de la finca que estan sembrada por cafe?

Answers

Responder:

360 m²

Explicación paso a paso:

Área de la finca = 576 m²

Porción de café =

Ración de naranja = 3/8

Español

Área de la granja de naranjos:

3/8 * área de la finca

3/8 * 576m²

= 216 m²

Dado que el resto se utiliza para el café;

Área utilizada para café;

Área total: área utilizada para naranja

576m² - 216m²

= 360 m²

1/4 divided by 2 and 1/4 divided by 3

Answers

Answer:

1/4/2=1/8 1/4/3=1/12

"The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed."

Answer:

1/8 ; 1/12

Step-by-step explanation:

1/4 / 2 = 1/8

1/4 / 3 = 1/12

a rectangle is graphed on the coordinate grid. which represents the equation of a side that is parallel to side s?​

Answers

Answer:

mmmm. give it to. meeee.

Find the measure of each angle indicated. Round to the nearest tenth.

Answers

I don't know sorry anjsjdjd

Answer:

I don't really understand what you're asking but, m<C equals 90⁰, and i think angle A's measurement says 0⁰, so I'm guessing you have to find angle B?

The material point moves in a straight line according to the law s (t) = t ^ 2 + 10t - 5, the stage of the point's velocity at the moment t = 2.

Find the speed of the point at the moment
t = 2

i translated this problem from different language, hopefully everything was translated right, please help, thank you

Answers

Answer:

I think the answer is 19

Step-by-step explanation:

Stuffed animals each weighing 1/4 pound are on a scale. The scale shows 1 1/2 pounds. How many stuffed animals are on the scale?

Answers

Here you go brodie .....

Answer: The answer is: 6

Step-by-step explanation: I have my ways ;>

Have a nice day!

-Sunny

PLS PLS PLS HELP DONT TAKE POINTS AND IF U CAN EXPLAIN AS WELL:)
Determine which two values the following expression is between.
7√37
A.
42.56 and 42.57
B.
42.54 and 42.55
C.
42.57 and 42.58
D.
42.55 and 42.56

Answers

Answer:

Step-by-step explanation:

When you put this into your calculator, you get

42.5793

A: The largest number is too small

B: The largest number is too small

C: This is the answer. The calculator answer will round to 42.58, but before you round the answer is between 42.57 and 42.58

D: and again the largest value is not big enough

Answer:

C

Step-by-step explanation:

7[tex]\sqrt{37}[/tex] = 42.5793377

42.5793377 rounded down is 42.57

42.5793377 rounded up is 42.58

The width of a rectangle measures (3v-3w) centimeters, and its length measures (5v-9w) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Answers

Answer: The Perimeter of the rectangle, P= 16v −24w

Step-by-step explanation:

Perimeter of a rectangle  = 2( L +W) =   2L + 2W

The width of a rectangle is given as  (3v-3w) centimeters,

its length is given as (5v-9w) centimetres

The Perimeter,P will now be  = 2L + 2W

P=2( 3v-3w) + 2( 5v-9w)

P=6v  −6w + 10v  - 18 w

 adding like terms

P=6v + 10v  −6w −18 w

P= 16v −24w

what is 0+0+0+0+0+0=?​

Answers

Answer:

34

Step-by-step explanation:

Answer:

its 0 :)

Step-by-step explanation:

I need help finding the difference between 3/4-1/3​

Answers

Answer:5/12

Step-by-step explanation:

Bonsoir pour vais vous m'aider svp développer et réduire l'expression D=(2x+3)²-(x+4)² et factoriser D Svp aider moi

Answers

Answer:

d = 3x²+ 4x - 7

C'est la réponse j'espère que ça aide.

What is the y-intercept
of this line? PLEASE HELP I WILL MARK BRAINLIEST TO WHOEVER ANSWERS CORRECTLY FIRST

Answers

Answer:

4

Step-by-step explanation:

PLEASE HELP/LAST CHANCE TO GET A GOOD GRADE
Which expressions are equivalent to 2^5/6^5?

Answers

Answer:

B, D

Step-by-step explanation:

2^5/6^5=0.00411522633744855967

3^-5=0.00411522633744855967

2^5x6^-5=0.00411522633744855967

the answer is B 3^-5

what is 0.5p=p+5?
the homework said move p to the other side but i dont really understand that

Answers

Answer: p=-10

Step-by-step explanation:

0.5p=p+5

-p     -p

-0.5p=5

Multiply by -0.5 on each side

p=-10

The value of p in 0.5p=p+5 is -10.

What is Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

0.5p=p+5

Now, solving for p

For which p from Right side should be moved to left side

0.5p - p= 5

-0.5p = 5

Now, Divide both side by (-0.5)

-0.5p/ (-0.5)= 5/(-0.5)

p = -10

Hence, the value of p is -10.

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Common factors of 3x^2y^2,10x^3y^2,6x^2y^2z

Answers

X2y2 is the common factor

simplify 5√6 + 3√24 - 6√54 + √150​

Answers

Answer:

[tex]= 3 \sqrt{ 6[/tex] + [tex]5 \sqrt{6[/tex]

[tex]= 8 \sqrt{ 6[/tex]

√54+√150

=√2×3×3×3+√2×5×5×3

=3√6+5√6

=8√6

=8×2. 44

=19. 59

Answer:

Step-by-step explanation:

[tex]5\sqrt{6}+3\sqrt{6(4)}-6\sqrt{6(9)}+\sqrt{6(25)}\\ \\ \sqrt{6}(5+3\sqrt{4}-6\sqrt{9}+\sqrt{25}\\ \\ \sqrt{6}(5+6-18+5)\\ \\ -2\sqrt{6}[/tex]

What is the perimeter of the rectangle below?

Answers

Answer:

36 in

Step-by-step explanation:

7+7+11+11= 36

Answer:

36 inches

Step-by-step explanation:

2 7inch sides plus 2 11 inch sides

2x7= 14

2x11= 22

14+22= 36 inches

What is 2/3 of 3/8 in fraction or decimal form or both idc

Answers

Answer:

Simplify the expression.

Exact Form:

1/4

Decimal Form:

0.25

Step-by-step explanation: If you are satisfied with my answer mark me the Brainliest!!! With A 5-star rating also saying Thanks.

4/10 - 11/10 helppp right nowww pleaseeee

Answers

Answer:

-7/10

Step-by-step explanation:

= 4/10 - 11/10

= (4-11)/10

= -7/10

Help me pleasee I will give brainlst

Answers

Answer:

d) The angles are not equal. The sides of one of the triangles changed, thereby changing its area.

Explanation:

If you look at figure 2, the triangle on top decreased in size.

Mrs. Lockhart goes to dinner with her 10 besties and they spend $330 on their dinner. How much would their total cost be if they leave a 20% tip? ​

Answers

Answer:

The answer would be 396 if it's plus a tip

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

Answer:

The answer is D

[tex] {x}^{2} + 6x + 9 = 0 \\ x = - 3[/tex]

That's the only equation will get us one point

3. Write an equation for the line that is perpendicular to the given line and that passes through the given point. y = 4x + 1 (12,-6)

a)y = -1/4x + 12
b)y = -1/4x - 3
c)y = -1/4x - 6
d)y= -1/4x + 3

Answers

Answer:

D. y = -1/4x + 3

Step-by-step explanation:

If the line is perpendicular, it will have a opposite reciprocal slope.

So, the slope will be -1/4.

Plug in this slope and the given point into y = mx + b, and solve for b:

y = mx + b

-6 = -1/4(12) + b

-6 = -3 + b

-3 = b

Plug in the slope and y intercept into y = mx + b

y = -1/4x - 3

So, the correct answer is D. y = -1/4x + 3

Answer:

D. y = -1/4x + 3

Step-by-step explanation:

Because it is the "Correct Answer"

Mrs. Jensen, the science teacher, collected 30 sedimentary rocks and 42 metamorphic
ones. Now she wants to create some identical kits for studying rocks, without having
any rocks left over. What is the greatest number of kits she can create? How many of
each rock will be in each kit?

Answers

Answer:

The most kits she can create is 6 with 5 sedimentary and 7 metamorphic

Step-by-step explanation:

Hope this helped, have a blessed day

if x = 6,
then -2x + 14 = ?

Answers

Francia está más lejos de aqi

Answer:

2

Step-by-step explanation:

multiply and divide

-2x6=-12

add and subtract

-12+14=2

so the answer would be 2.

i can explain better if you need me to.

A helicopter is hovering over a landing pad 100 m from where you are standing. The helicopter's
angle of elevation with the ground is 15°. What is the altitude of the helicopter? (Round answer to 2
decimal places)

Answers

Answer:

26.79 meters

Step-by-step explanation:

tan15 = x/100

x = 100tan15 ≈ 26.79

Answer is 26.79m

Angle of elevation and tan Formula:

The angle of elevation is the angle between the horizontal line of sight and the object.

The tan angle = the length of the opposite side / the length of the adjacent side.

Here, the angle of elevation is 15 degrees.

Let's altitude of the helicopter is h.

The horizontal distance is 100m

tan(15°) = h / 100

0.2679 = h / 100

=> h = 0.2679 * 100

=> h = 26.79m

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3. Tyler owes the bank $180. His brother owes the bank $70
less than Tyler does. How much does the brother owe the
bank?

Answers

His brother owes $110

Answer:

The brother owes $110 less than Tyler. The brother owes $70.

Step-by-step explanation:

i need help can yall help me with math

Answers

Answer:

2, 4 by plugging in the answer choices

When animals or humans build things, they choose materials based on their​

Answers

Answer:

strength, availability, preference, and cost

Step-by-step explanation:

Stability, purpose, texture, appearance, structure, and size.

which of the following choices is the value of csc 0?

Answers

csc 0 = r/y
r = sqrt 81 + 144
r = sqrt 225
r = 15

csc 0 = 15/12

The value of [tex]csc(\theta)[/tex]  is  [tex]\frac{15}{12}[/tex]

What is right triangle?

"It is a triangle in which one of the angle measures 90° "

What is hypotenuse?

"It is the longest side of the right triangle."

What is Pythagoras theorem?

"For a right triangle, [tex]x^{2}+ y^{2}=z^{2}[/tex], where z is the hypotenuse and x, y are other two sides of the right triangle."

What is csc of angle?

"In a right triangle, csc of angle is the ratio of the hypotenuse to the opposite side of angle."

For given question,

First we find the hypotenuse of the right triangle.

Using Pythagoras theorem,

[tex]\Rightarrow 9^{2} + 12^{2}= r^{2}\\\\ \Rightarrow 81 + 144=r^2\\\\\Rightarrow r=\sqrt{225}\\\\ \Rightarrow r=15[/tex]

so, the hypotenuse is r = 15

Now we find the csc of angle [tex]\theta[/tex]

[tex]\Rightarrow csc(\theta)=\frac{hypotenuse}{opposite~side~of~\theta} \\\\\Rightarrow csc(\theta)=\frac{15}{12}[/tex]

Therefore, the value of [tex]csc(\theta)[/tex] is [tex]\frac{15}{12}[/tex]

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