Mathematics High School

:
(2x – Зу = 18
(2x + y = 2

Answers

Answer 1

Answer:

2x = 2 × 12 = 24 24 =2x 24-6=18

3y = 3 × 2 = 6 6 =3y

2x = 2×1 = 2 2 =2x 2+0=2

y = 0 0 = y

Step-by-step explanation:

I'm not sure how the question is mentioned in the test but from my point of view I got this not sure how the it is explained in your nest im only 11 so yeh. sos if its wrong

Answer 2

Answer:

y = -4

x = 3

Step-by-step explanation:

I will be using the elimination method to solve this:

Begin by times -1 to the bottom equation.

[tex]2x-3y=18[/tex]

[tex]-2x-y=-2[/tex]

Add them together

[tex]0x-4y=16[/tex]

ignore the 0x and divide -4 to both sides

[tex]\frac{-4y}{-4} =\frac{16}{-4}[/tex]

y = -4

Plug y back into one of the two original equations

[tex]2x-3(-4)=18[/tex]

multiply -3 and -4 to get +12

[tex]2x+12=18[/tex]

subtract 12 to both sides

[tex]2x=6[/tex]

divide by 2 to both sides

x = 3

Related Questions

Alis needs 10 strips of ribbon each 2 and 1/2 feet. how much ribbon in all is needed

Answers

Answer:

She needs 25 feet

Step-by-step explanation:

10 * 2.5 = 25

Answer: There are 3 strips that can be cut from the roll of ribbon.

what is 7 divided by 10 as a fraction

Answers

The fractional form is 7/10.

What is Fraction?

The fractional bar is a horizontal bar that divides the numerator and denominator of every fraction into these two halves.

The number of parts into which the whole has been divided is shown by the denominator. It is positioned in the fraction's lower portion, below the fractional bar.How many sections of the fraction are displayed or chosen is shown in the numerator. It is positioned above the fractional bar in the upper portion of the fraction.

Given:

We have to divide 7 by 10.

The common factor for 7 and 10

7 = 7 x 1

and, 10= 2 x 5 x 1

so, there is only one factor common is 1.

Thus, the fraction is 7/10.

Learn more about Equivalent Fraction here:

https://brainly.com/question/29766013

#SPJ2

Heya, could someone help me figure this out? I'm kinda stuck on this question :p​

Answers

Answer:

-0.5

Step-by-step explanation:

to understand thisyou need to know about:algebraPEMDASgiven:v=u+atu=2a=-5t=½let's solve:substitute the given values : v=2+(-5)×½v=2+(-2.5)v=-0.5

Plz answer fast they need to be ordered 1 through 5

Answers

43251 i’m pretty sure

Which situations can be represented by an exponential function?

Select each correct answer.



The value of a vehicle decreases by 11% each year.
In a structure made of bricks, each row has 10 more bricks than the previous row.
A dentist's office accepts 15 new patients each month.
Every year, the number of online video subscriptions increases by 3 times what is was the previous year.

Answers

Answer:

The answer is IC and D I just finished the text

Step-by-step explanation:

CAN SOMEONE PLEASE HELP, ILL GIVE BRAINLIEST.

Answers

Answer:

x = 3.5

Step-by-step explanation:

3.5 x 3 is 10.5. Triangle two has been expanded each side by 1.5. So multiply 7 (the side with 3x on the other triangle) x 1.5 to get 10.5. To fid x divide 10.5 by 3. This gives you 3.5 as x.

Hope it helps!

Answer:

x = 3.5

Step-by-step explanation:

What we know that the scale factor is 1.5 going from DEF to XYZ (4.5/3 = 1.5; 7.5/5 = 1.5)

So, multiply 7 by 1.5 to get ZX's length. It would be 10.5 units long.

We now know the equation, which is 3x = 10.5

3x = 10.5

Cancel out the multiplication by dividing both sides by 3

x = 10.5/3

Divide 10.5 by 3 to get 3.5

x = 3.5 in this case.

what can we say about the given figure?​

Answers

Answer:

It's a parallelogram, angles B and D, and A and C are congruent, lines AB and DC, and BC and AD are congruent.

Step-by-step explanation:

which pair of figures is similar?​

Answers

The answer should be A

each piece of paper is a memo pad is a square. The length of of each side is 2 3/4 inches. What is the area of one piece. please and thank you

Answers

Answer:

approximately 7.5265in

Step-by-step explanation:

Area = length x width

2.75 x 2.75 = 7.5265in

2 A square window in Miranda's
house has an area of 225 in2.
What is the perimeter of the
window?

Answers

Perimeter is , or around 63.89 in.
If you meant that the area was 225 in²:
Perimeter is 60 in

2 1/6 x 4 1/2 Solve the problem AND explain your steps

Answers

The answer is 9 3/4, 9.75
Explanation: 13/6 x 9/2
(reduce) 13/2 x 3/2
(Multiply 13/2 x 3/2)
39/4
(Reduce again) 9 3/4 or 9.75
Hope this helps

I WILL GIVE BRAINLIEST!!!! ANSWER QUICK!!!
Which of the following represents the general equation for the geometric sequence?


-1, -2, -4, …

a n = 2 n - 1

a n = -1 · 2 n - 1

a n = 1 · 2 n + 1

a n = 1 · 2 n - 1

Answers

Answer:

-1,-2,-4

an = a1 * r^(n - 1)

a1 = first term = -1

r = common ratio = 2

so the equation would be : an = -1 * 2^(n - 1)

Did You Find You Answer

1,275÷588 rounded pls i need some help​

Answers

1275 divided by 588= 2.168367346938776
1dp=2.2
2dp=2.7
3dp=2.8

What is the constant in the expression 7x + 3

Answers

Answer:

3

Step-by-step explanation:

In expressions, there are 4 items to look at :

1. Terms

2. Coefficients

3. Like Terms

4. Constant Terms

Since 4. is the topic at hand, let's focus on that, constant terms are terms that cannot be changed value.

This would mean numbers without a variable, look at the expression below :

7x + 3

Since 3 doesn't have a variable, therefore 3 is a constant term.

Need help pls


Find the missing angle

Answers

Answer:

? = 109 degrees

Step-by-step explanation:

180 -45-75 = 60

180-60-79 = 41

180-41-60 = 71

180-71 = 109 degrees

After eating at the restaurant, Benny, Dan, and Mike decided to divide the bill evenly. If each person paid 47 dollars, what was the total of the bill ? What equation should be used? (write the equation followed by the answer)

Answers

The total of the bill is $141 because 47 x 3 = 141.

Write 36 as a product of its prime factors.

Answers

2^2 x 3^2 is the answer to the question

Answer:

2 × 2 × 3 × 3 × 3

A cashier can ring up 12 items per minute. How long will it take the cashier to ring up 72 items? ​

Answers

Answer:

So it will take 6 minutes to ring up 72 items.

Step-by-step explanation:

Well this seems pretty simple just have to reads the question and know what to find.

So what we know :

A cashier can ring up 12 items per minute

So :

1 minute = 12 Minutes

And we have to find :

How long for 72 items

So since we know he can do 12 in a minute and it is asking how many minutes it will take for 72 we can divide.

So :

72 / 12

=

6

So it will take 6 minutes to ring up 72 items.

I hope this helps!

If you have any questions or concerns feel free to message me or comment. :)

I NEED HELP
Use the compound interest formula A=P(1+rn)nt.

If $10,000 is invested at 2 percent semi-annually for 5 years, what is the amount at the end of the term?

$11,052


$11,051


$11,049


$11,046

Answers

Answer:

A

Step-by-step explanation:

Answer:

D: 11,046

Step-by-step explanation: i took the quiz

-10 ● 10 ● -3

Answer choices
-30
300
30
-300

Answers

Answer:

300

Step-by-step explanation:

1.
Which relationship shows y as a function of x?
A. {(-3, 8), (-8, -1), (5, -7), (-8, -8)
B. {(3,-2), (-3, 7), (-7, 0), (1, 2)}
C. {(0, 3), (9, -8), (0, 8), (-6, -5)}
D. {(1, 0), (1, 5), (-4, 5), (-8, 0)}

Answers

I think B is the answer

what is 1.0×10 to the power of 14 in scientific notation

Answers

Answer: 100,000,000,000,000

Step-by-step explanation:

1.0 x 10^14

since the exponent is positive that means we move the decimal to the right 14 times and you should get 100000000000000.0

Which equation would make this system consistent and dependent?
2x+y=-4
6x-3y=12
y=3x-4
y=2x+5

Answers

Answer:

The second one

Step-by-step explanation:

A car dealership pays $8,550 for a car. They markup the price by 20.4% to get the retail price. What is the retail price of the car at this dealership?

Answers

Answer:

$10294.20

Step-by-step explanation:

8550 increase 20.4% =

8550 × (1 + 20.4%) = 8550 × (1 + 0.204) = 10294.2

geometry help it’s easy!!!

Answers

Answer:

c

Step-by-step explanation:

Answer:

θ = 41.81°

Step-by-step explanation:

Given

[tex]\frac{2}{3}[/tex] = sinθ , then

θ = [tex]sin^{-1}[/tex] ( [tex]\frac{2}{3}[/tex] ) ≈ 41.81°

hi please help i’ll give brainliest if you give a correct answer please show your reasoning

Answers

Answer:

0.088

22x4 is 88 and add the 2 zeros

Step-by-step explanation:

Answer:

0.088.

Step-by-step explanation:

0.22 * 0.4

Now 22 * 4 = 88 and

there are 3 numbers after the decimal points in 0.22 and 0.4 so there has to be 3 numbers after the decimal point in the answer, so it's:

0.088.

Plot the graph with equation y = x^2 + 3x - 1

Answers

Here’s the equation graphed

can you help me please ​

Answers

Answer:

25/6

Step-by-step explanation:

Jack has a rectangle garden that measures 4 feet wide by 3 feet long he wants to increase the area to 56 feet

Answers

Answer:

then you would have as length or width 8 by 7 feet, or any other factors of 56 as the width or length. Since you want to increase the area.

If he adds 4ft to the length and the width the garden would then be 7x8, which would give him an area of 56ft (7x8=56)

A mountain climber climbed down a cliff 10 metres at a time. He did this 5 times in one
day. What was the overall change in his elevation?
-50m
150m
-150m
50m

Answers

Answer:

-50 m

Step-by-step explanation:

its negative elevation because he is going down

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