I need help please asap

Answer:

a=300 and k=200

Step-by-step explanation:

Multiply the first equation by -10,and multiply the second equation by 1.

−10(a+k=500)

1(10a+3k=3600)

Becomes:

−10a−10k=−5000

10a+3k=3600

Add these equations to eliminate a:

−7k=−1400

Then solve−7k=−1400for k:

−7k=−1400 (Divide both sides by -7)

[tex]\frac{-7k}{-7} =\frac{-1400}{-7}[/tex]

Now that we've found k let's plug it back in to solve for a.

Write down an original equation:

a+k=500

Substitute200forkina+k=500:

a+200=500

a+200+−200=500+−200(Add -200 to both sides)

a=300

Hope this helps :)

Answer: He will practice both on every 15 days.

Step-by-step explanation:

Given: Jaquan practices soccer every 3 days.

He practices basketball every 5 days Jaquan practiced both today.

The number of days until he practices both = Least common multiple of 3 and 5

= 3 x 5    [Both are primes]

= 15

Hence, he will practice both on every 15 days.

Answer:

a) 4

b) 80

Step-by-step explanation:

N/A

Answer:

quadrilateral

<3

Step-by-step explanation:

Answer:

C, i think this is correct!

Answer:

9 is the correct answer all the best

Step-by-step explanation:

(x + 0.5)/6 = 19/12

2(x + 0.5) = 19 (multiply 12 on both sides)

x + 0.5 = 9.5 (divide 2 on both sides)

x = 9 (subtract 0.5 on both sides)

The answer is 9.

Answer:

We conclude that total cost/bill will be: $27.81  

Step-by-step explanation:

Given

The cost of an iPhone case = $27

Additional expense = 3% = 3/100 = 0.03

To determine

Total bill = ?

The expense amount can be calculated by multiplying the cost of an iPhone case by the additional expense

i.e.

Expense Amount = cost of an iPhone case × additional expense

                             = 27 × 0.03

                             = $0.81

The total cost is calculated by adding the expense amount and the original cost of an iPhone case.

i.e.

Total cost/bill = Expense Amount + cost of an iPhone case

                  = $0.81 + $27

                  = $27.81

Therefore, we conclude that total cost/bill will be: $27.81            

Answer:

w = 7

Step-by-step explanation:

Step-by-step explanation:

—3w +27=6

—3w=6—27

—3w=—21

w=7

Answer:

The closure property states that for any two rational numbers a and b, a × b is also a rational number. The result is a rational number. So rational numbers are closed under multiplication.

Step-by-step explanation:

brainliest plzzzzzz

Closure property under multiplication states that any two rational numbers' product will be a rational number.

Closure property states that when a set of numbers is closed under any arithmetic operation such as addition, subtraction, multiplication, and division and is performed on any two numbers of the set with the answer being another number from the set itself. This property is applicable for real numbers, whole numbers, integers, and rational numbers.

Closure property under multiplication states that any two rational numbers' product will be a rational number, i.e. if a and b are any two rational numbers, ab will also be a rational number.

Example: 2/3 × 3/5 = 2/5

Here, 2/3 and 3/5 are rational numbers, so 2/5 also rational number.

Therefore, closure property under multiplication states that any two rational numbers' product will be a rational number.

Learn more about the closure property here:

https://brainly.com/question/29798485.

#SPJ2

Step-by-step explanation:

[tex]2x + 3y = 12 \\ x = - 2y + 10 \\ 2( - 2y + 10) + 3y = 12 \\ - 4y + 20 + 3y = 12 \\ - y = - 8 \\ y = 8 \\ x = - 2y + 10 \\ x = - 2 \times 8 + 10 = - 6 \\ [/tex]

(-6 , 8)

Answer:

2

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer:

20x > 33 = 2

Step-by-step explanation:

divide 20x by 20 do the same with 33

20x/20 > 33/20

x > 1.65

1 isnt a prime number and the closest prime number to 1.65 is 2

the answer is x > 2

Answer:c= the price will be of $9, 492

Step-by-step explanation:

Hope this helps

Answer: 9500000

Step-by-step explanation: 95 × 100000 = 9500000

*Multiply the value by 100000*

Answer:

Step-by-step explanation:

f(x) + g(x) = 3x^2 + 2x - 1 + x^2 - 3x + 1

f(x) + g(x) = 4x^2 - x

==================================

f(x) - g(x) = 3x^2 + 2x - 1 - x^2 + 3x - 1

f(x) - g(x) = 2x^2 + 5x - 2

Answer:

1 1/2 =36/24. And 3/4 is already a common denominator

Step-by-step explanation:

Given:

The expression is

[tex]6x-8+4y+5[/tex]

To find:

The constants in the given expression.

Solution:

Terms can be a number, variable and product of both. these are separated by "+" sign.

Variables terms:  These terms contains at least one variable.

Constant terms:  These terms are free from the variables. it means there are no variable.

We have,

[tex]6x-8+4y+5[/tex]

In this expression, the terms are 6x, -8, 4y, 5, variable terms are 6x, 4y and constant terms are -8, 5.

Therefore, the last option is correct, i.e., -8, 5.

Answer:

Step-by-step explanation:

6. Complementary angles add up to 90 degrees

m<S is 52

90-52= 38

m<R is 38

38=3x+2

-2

3x=36

x=12

7.

Lines are always equal to 180

(5x+1)+(12x-8)=180

17x-7=180

+7

17x=187

x=11

8.

These angles are equal to each other '

79= 4x+15

-15

64=4x

x=16

Hope this Helps!

Answer:

See below

Step-by-step explanation:

You could leave 47:3 as the improper fraction [tex]\frac{47}{3}[/tex] or the mixed number [tex]15 \frac{2}{3}[/tex].

Answer:

Fraction: [tex]\frac{47}{3}[/tex] .  Mixed fraction: [tex]15\frac{2}{3}[/tex].

Step-by-step explanation:

Ratio = Numerator : Denominator

Using the above information, the ratio 47:3 will be [tex]\frac{47}{3}[/tex] when written as a fraction.

The mixed fraction will be [tex]15\frac{2}{3}[/tex].

Hope this helps!

Answer:

The solution is (4,250)

Step-by-step explanation:

This means that when a member of either gym (A or B) signs up for a four-month membership, they pay the same amount - $250.  Hope this helps :)

Answer:

C. (2x – 1)(2x + 1)

Step-by-step explanation:

4x² – 1 = (2x)(2x) – 1 = (2x – 1)(2x + 1)

Answer:

surface area = 6a^2 = 6

hence are = 6 unit.sq

Answer:

Step-by-step explanation:

Variable:

Equation:

Solution:

Step-by-step explanation:

REO=RBO=67

BOR=ERO=91

REB=REO-BE0=67-32=35

RYE=180-ERO-REB=180-91-35=54

Answer:

We conclude that the equivalent expression is:

[tex]3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)=6x+20y+8z[/tex]

Step-by-step explanation:

Given the expression

[tex]3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)[/tex]

Remove parentheses: (a) = a

[tex]=3\times \:2x+4\times \:5y+4\times \:2z[/tex]

Multiply the numbers: 3 ×  2 = 6

[tex]=6x+4\times \:5y+4\times \:2z[/tex]

Multiply the numbers: 4 × 5 = 20

[tex]=6x+20y+4\times \:2z[/tex]

Multiply the numbers: 4 × 2 = 8

[tex]=6x+20y+8z[/tex]

Thus, we conclude that the equivalent expression is:

[tex]3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)=6x+20y+8z[/tex]

Answer:

520 per 16 seconds.

Step-by-step explanation:

Answer:

The triangle cannot be classified as right angled triangle.

Step-by-step explanation:

Given measurements are;

15, 13 and 6.

In right angle triangle, the sum of square of lengths of smaller sides is equal to square length of larger side.

Therefore,

[tex](6)^2 + (13)^2 = (15)^2\\36 + 169 = 225\\205 \neq 225[/tex]

Hence,

The triangle cannot be classified as right angled triangle.