21х + 7у = 42
- 5х + 5y = 10
X and y

Answers

Answer 1

Answer:

X=5 y=7

Step-by-step explanation:

i am pretty sure im right. if im wrong im sorry

Answer 2

Answer:

Step-by-step explanation:

21x + 7y = 42

-5x + 5y = 10

105x + 35y = 210

  -35x - 35y = -70

70x = 140

x = 2

-10 + 5y = 10

5y = 20

y = 4

(2, 4)


Related Questions

Please make it correct..I need to pass this...

Answers

Simplify them all down to 5 then solve

Answer: The next fraction in the sequence will be 5/20.

Step-by-step explanation:

9/20 is the first fraction.

2/5 is equal to 8/20, so that is the second fraction.

7/20 is the third fraction.

3/10 is equal to 6/10, so that is the fourth fraction.

By now we can see that there is a pattern, because the first fraction's numerator began with 9, the next 8, then 7, and 6. We also simplfied all he fractions so that they had the denominator 20. Because of this, the next fraction in the sequence will be 5/20.

Simplify the following expression 3°?​

Answers

Answer: 1

Anything to the 0 power is 1

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

As you may already know, the number (the base) to the power (the exponent) is how many times you multiply the base. For instance:

3² = 3 * 3

3³ = 3 * 3 * 3

However, anything to the zeroth power is 1.

Why?

Well, for those above examples, take 3², you can also write it as:

3² = 1 * 3 * 3

It's just 1 times how many of that number. In 3 squared, there are twos 3's, not to be confused with 3 * 2.

In 3 to the zeroth power, there are zero 3's:

3° = 1

Now it has only the one.

This is just the way I was taught to think about it, but I'm sure there's a better explanation than mine.

Un agricultor planta 720 naranjos, 250 matas de mandarina, 360 de mamon y 480 de níspero en el menor número posible de hileras, cada una con el mismo número de árboles, sin mezclarlos. A) ¿Cuántos arboles tiene cada hilera? B) ¿Cuántas hileras necesita?

Answers

Answer:

A) Se requiere 10 árboles por hilera.

B) El agricultor necesita 72 hileras de naranjos, 25 hileras de mandarinos, 36 hileras de mamoneros y 48 hileras de nísperos.

Step-by-step explanation:

A) A continuación, realizamos la descomposición factorial de cada número:

Naranjos

[tex]720 = 2 \times 2 \times 2 \times 2 \times 3\times 3\times 5[/tex]

[tex]720 = 2^{4}\times 3^{2}\times 5[/tex]

Mandarinos

[tex]250 = 2\times 5\times 5\times 5[/tex]

[tex]250 = 2\times 5^{3}[/tex]

Mamoneros

[tex]360 = 2\times 2\times 2\times 3\times 3\times 5[/tex]

[tex]360 = 2^{3}\times 3^{2}\times 5[/tex]

Nísperos

[tex]480 = 2\times 2\times 2\times 2 \times 2\times 3\times 5[/tex]

[tex]480 = 2^{5}\times 3\times 5[/tex]

El máximo común divisor de los cuatro números representa el número de árboles de cada hilera considerando el menor número posible de hileras, cuyo valor es [tex]2\times 5 = 10[/tex]. Se requiere 10 árboles por hilera.

B) El número de hileras por árbol se determina al dividir el total de cada tipo de árbol por el resultado del punto anterior:

Naranjos

[tex]x = \frac{720}{10}[/tex]

[tex]x= 72[/tex]

Mandarinos

[tex]x = \frac{250}{10}[/tex]

[tex]x = 25[/tex]

Mamoneros

[tex]x = \frac{360}{10}[/tex]

[tex]x = 36[/tex]

Nísperos

[tex]x = \frac{480}{10 }[/tex]

[tex]x = 48[/tex]

El agricultor necesita 72 hileras de naranjos, 25 hileras de mandarinos, 36 hileras de mamoneros y 48 hileras de nísperos.

Teniendo en cuenta la definición de m.c.m:

A) Se requieren 10 árboles por hilera.

B) El agricultor necesita 72 hileras de naranjos, 25 hileras de mandarinos, 36 hileras de mamoneros y 48 hileras de nísperos.

A) Para hallar la cantidad de árboles que posee cada hilera debes hallas el m.c.d entre 720, 250, 360 y 480.

El máximo común divisor, m.c.d., de dos o más números es el mayor número que divide a todos de manera exacta, es decir, es el mayor de los divisores que tienen en común dos o más números.

El mínimo común múltiplo se suele expresar con las siglas m.c.d. (a, b), siendo a y b los números.

Para calcular el mínimo común múltiplo de dos o más números, de debe descomponer los números en factores primos (son los números que sólo son divisibles por sí mismos o por el número 1). En este caso:

720= 2×2×2×2×3×3×5= 2⁴×3²×5

250=2×5×5×5= 2×5³

360=2×2×2×3×3×5= 2³×3²×5

480=2×2×2×2×2×3×5= 2⁵×3×5

El mínimo común múltiplo se obtiene escogiendo todos los factores comunes, elevados a la menor potencia. Es decir, se escoge aquellos factores que aparecen en todas las descomposiciones la menor cantidad de veces. En este caso:

mcd (720,250,360, 480)= 2×5= 10

Entonces, se requiere 10 árboles por hilera.

B) El número de hileras por árbol se determina al dividir el total de cada tipo de árbol por la cantidad de árboles que se requiere por hilera:

Naranjos: 720÷10= 72

Matas de mandarina: 250÷10= 25

Mamon: 360÷10= 36

Níspero: 480÷10= 48

El agricultor necesita 72 hileras de naranjos, 25 hileras de mandarinos, 36 hileras de mamoneros y 48 hileras de nísperos.

Learn more:

https://brainly.com/question/19756356?referrer=searchResultshttps://brainly.com/question/19129302?referrer=searchResults


Alejandro put down a deposit of $75.00 on a graduation ring, and he then began making weekly payments of $12.50 until the ring was fully
paid for.
If the price of the graduation ring was $225.00, how many weekly payments of $12.50 did Alejandro make?

Answers

Answer:

12 weekly payments

Step-by-step explanation:

Here, we want to get the number of weeks in which he made payment for the ring

We start by subtracting the deposit,

That would be;

225-75 = 150

Now, we proceed to divide what ie left by the weekly payment to get the number of weeks

That would be;

150/12.5 = 12

Answer:

12 weekly payments

Step-by-step explanation:

Here, we want to get the number of weeks in which he made payment for the ring

We start by subtracting the deposit,

That would be;

225-75 = 150

Now, we proceed to divide what ie left by the weekly payment to get the number of weeks

That would be;

150/12.5 = 12

Step-by-step explanation:

Someone please help and please make sure the answer is right :(

Answers

Answer:

it's 11

Have a good day!!

4 years ago, the age of two sisters combined equal 24 years, and the younger sister was 8 years younger. How old are they today?

Answers

20 and 12 ...............


5x + 2(x + 7) = 14x – 7. Find x

a. 1
b. 2
c. 3
d. 4

5(z + 1) = 3(z + 2) + 11 Solve for Z

a. 2
b. 4
c. 6
d. 12

(x – 2) / 4 – (3x + 5) / 7 = – 3, x = ?

a. 6
b. 7
c. 10
d. 13

Answers

Answer:

1. x = 3

2. x = 6

3. not sure

Step-by-step explanation:

5x +2 (x+7) =14x -7

First expand the expandables

5x +2x +14 =14x-7

7x +14 =14x -7

14x -7x =14+7

7x=21 . Divide both sides by 7

x=3.

Step-by-step explanation:

1. 5x +2x + 2*7 =14x-7

7x + 14 = 14x - 7

14 +7 = 14x - 7x

21 = 7x

21/7 =x

4 =x

If the side lengths of a cube are 16 feet, what is the correct way to write the expression to represent the volume of the cube in exponential form? 16 ⋅ 3 16 ⋅ 16 ⋅ 16 163 316

Answers

Since the volume of a cube—in fact, for anything’s volume—is ^3, 16*16*16 is the answer!

Good luck to you!

Answer:

16x16x16

Step-by-step explanation:

The reason why is because a cube has six squares that make up the cube. 6/2= 3. The answer is the same as 16 to the power of 3.

X is less than or equal to-86

Answers

Answer:

x≤-86

Step-by-step explanation:

the diagram shows nine identical squares inside a rectangle​

Answers

Answer:

it is the fourth one it is your answer

Answer: width = 15

Step-by-step explanation:

6 x 3 = 18

5 x 3 = 15

The circumference of a circle is 16Pi ft.

The radius is ft.

Answers

Answer:

the answer is 8 Pi

Step-by-step explanation:

just divide 16 by 2 because it's half of the diameter

Answer:

The answer is (8)

Step-by-step explanation:

I got it right on edge have a good day.

          ☆*: .。. o(≧▽≦)o .。.:*☆                  

The previous balance on Hector Todd's savings account is $618.21. He has $4.31 in
interest, $466.26 in deposits, and $10.10 in withdrawals. What is his new balance?
$1,068.78
$1,078.68
O $1,178.68
$1,078.90

Answers

Answer:

$1,078.68

Step-by-step explanation:

Here, we want to calculate the balance

That would be adding interest plus deposit plus balance minus withdrawals

That would be;

618.21 + 466.26 + 4.31 - 10.10 = $1,078.68

You have a bag of chocolate candy. Ten of them are red, 7 are brown, 12 are
green, and 9 ore blue. What is the probability that you pick a red candy, given that
you have already picked o red candy and have not replaced it?

Answers

Answer:A

Step-by-step explanation: 10/37

1/4 : 10 = x : 4 solve for x

Answers

X= 0.09629120 ..., —2.59629120...

Answer:

Step-by-step explanation:

1/4 :10=1/40

1/40=x/4

x=4/40=1/10

A school carnival sold 90 early-admission tickets and 810 regular tickets. What percentage of the tickets sold were early-admission tickets?

Answers

Answer:

11.12 %

Step-by-step explanation:

Given that,

There are 90 early admission tickets.

There are 810 regular tickets.

We need to find the percentage of the tickets sold were early-admission tickets.

[tex]P=\dfrac{90}{810}\times 100\\\\=11.12\%[/tex]

So, the required percentage is 11.12 %.

i need help with this

Answers

Answer:

His car is slowing down.

Step-by-step explanation:

During section C, the car decreased in speed (the slope is negative). This is the definition of 'slowing down', hence the answer.

Answer:

C.  His car is slowing down.

Step-by-step explanation:

The slope is going downwards, so this means that he is going slower.

I need help pls and thank you

Answers

The answer is 56 !
Your welcome :) !


Carter bikes 1/4 mile in
5/6 minutes. At this rate, how many minutes does it take Carter to bike 1 mile?

Answers

Answer:

If Carter bikes 1/4 mile in 5/6 minutes, he bikes 1/4 mile in 50 seconds. (5/6 of a minute is equal to 50 seconds)

At this rate, if Carter bikes 1/4 mile in 50 seconds, he will be able to bike 2/4 of a mile in 100 seconds, 3/4 of a mile in 150 seconds, and a whole mile (4/4) in 200 seconds.

Converting 200 seconds to minutes, we have that it takes Carter 3 1/3 minutes to bike 1 mile.

Let me know if this helps!

I need help solving this problem, please respond as fast as you can.

-7 – 3x = 1x + 4(2 + x)

Answers

Answer:

x = -15/8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

-7 - 3x = 1x + 4(2 + x)

Step 2: Solve for x

Distribute 4:                                                                                                    -7 - 3x = x + 8 + 4xCombine like terms:                                                                                       -7 - 3x = 5x + 8[Addition Property of Equality] Add 3x on both sides:                                -7 = 8x + 8[Subtraction Property of Equality] Subtract 8 on both sides:                      -15 = 8x[Division Property of Equality] Divide 8 on both sides:                               -15/8 = xRewrite/Rearrange:                                                                                        x = -15/8

For f(x) = 2x -1 what is f(5)?

Answers

Answer:

shuqhsuwbe

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

f(x)=2x-1

f(5)=2(5)-1=10-1=9

The steps used to solve the equation 4x + 3 = 15 for x are shown below.

4 +3 = 15
Step I: 4 = 12
Step II: = 3

Answers

Answer:

4x + 3 = 15

4x=15-3

x=12/4

x=3

7 (10pts) In △ABC, m∠B = 90°, m∠C = 15°, M ∈ BC . If m∠BAM = 60°, AM = 10 in. Find: AB and MC. B (5pts) Find MC. Answer: MC = in. SAVE ANSWER Need help with formatting? Next

Answers

Answer:

MC is 10 in.

Step-by-step explanation:

The given parameters for the triangle ΔABC are;

m∠B = 90°

m∠C = 15°

M ∈ BC

m∠BAM = 60°

AM = 10 in.

From the given information, ΔABC is drawn using Microsoft Visio, from which we have ΔACM

m∠CAM = 75° - 60° = 15° (By angle addition postulate)

m∠CAM = 15° = m∠C, therefore, ΔACM is an isosceles triangle with base angles, m∠CAM and m∠C each equal to 15°

AM = 10 in. = MC, by definition of isosceles triangle

∴ MC = 10 in.

Here some math for you guys

Answers

Answer:

UNDEFINED

Step-by-step explanation:

I CACULATED IT ON A ADVANCED CACUALTOR  ANY IT DOSENT SAY ANYHITNG LOL

Answer:

1.8

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

x  ≈  1.78522264

x ≈ 1.8

А
х+8
2х - 5
В
10
14
C

Answers

Answer: Option B

Step-by-step explanation:

Tell whether the sequence is arithmetic. If it is what is the common difference? 1, 9/10, 4/5, 7/10

Answers

Answer:

the answer is D

Step-by-step explanation:

The common difference of the arithmetic sequence 1, 9/10, 4/5, 7/10 is -1/10.

What is arithmetic sequence ?

An ordered group of numbers with a shared difference between each succeeding word is known as an arithmetic sequence.

The given arithmetic sequence is,

1, 9/10, 4/5, 7/10

The first term of the sequence a = 1

The common difference of the arithmetic sequence is the difference between two consecutive terms.

d = 9/10 - 1

d = - 1/10

The common difference of the given arithmetic sequence is - 1/10.

To learn more about Arithmetic sequence on :

https://brainly.com/question/1452631

#SPJ5

Hey I need some help

Answers

Answer:

27

Step-by-step explanation:

It is an equilateral triangle, so all sides are 9 ft. 9*3=27.

POSSIBLE POINTS: 33.33
Tyler can complete his Algebra Il project in 2.5 hours, but if he works with Luke they can finish in 1.5 hours. How long would it take Luke to finish the
project on his own?

Answers

All you need to do is find what the average of them two would be. Its 3 hours

can you help me please ​

Answers

Answer:

x = 7

Step-by-step explanation:

The parameters of the triangle having bisected angle are;

The length of the opposite and adjacent side of one of the halves of the bisected angle = 6 and 14 respectively

The length of the opposite and adjacent side of the other half of the bisected angle = (3·x - 12) and 21 respectively

By the angle bisector theorem, we have;

[tex]\dfrac{14}{6} = \dfrac{21}{3\cdot x - 12}[/tex]

Simplifying, we get;

[tex]\dfrac{14}{6} = \dfrac{2 \times 7}{2 \times 3} = \dfrac{7}{3}[/tex]

[tex]\dfrac{21}{3\cdot x - 12} = \dfrac{3 \times 7}{3 \times (x - 4)} = \dfrac{7}{x - 4}[/tex]

[tex]\dfrac{7}{3} = \dfrac{7}{ x - 4}[/tex]

7 × (x - 4) = 3 × 7

∴ x - 4 = 3

x = 3 + 4 = 7

x = 7.

Which expression is equivalent to ^3 square root of 54x + 3^3 square root of 2x, if x ≠ 0

Answers

Answer:

A

Step-by-step explanation:

[tex] \sqrt[3]{54x} + 3 \sqrt[3]{2x} = \\ = \sqrt[3]{2x \times 27} + 3 \times \sqrt[3]{2x} \\ = 3 \sqrt[3]{2x} + 3 \sqrt[3]{2x} = 6 \sqrt[3]{2x} [/tex]

Someone help me with this question please I am confused

Answers

if AC is AB and BC put together you add those and put them equal to the whole. Solve and you find X. You take X plug it into the BC equation (3X+5) and you find the length of BC

Answer:

x = 4, BC = 17

Step-by-step explanation:

AC = AB + BC , substitute values

7x - 3 = 2x + 3x + 5

7x - 3 = 5x + 5 ( subtract 5x from both sides )

2x - 3 = 5 ( add 3 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

Then

BC = 3x + 5 = 3(4) + 5 = 12 + 5 = 17

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