solve the following pair of simultaneous equations. you can use any 3 methods. 2x- y= 5, x+2y=5.

Answers

Answer 1

Answer:

2x-y= 5, x + 2y=5

Step-by-step explanation:

x = 3, y = 1


Related Questions

I need the perimeter of this triangle. Round to the nearest tenth. Quickly please

Answers

Answer:

The perimeter of the triangle is about 17.1 units.

Step-by-step explanation:

The perimeter of a triangle is the sum of its three side lengths.

We can see that the two legs of the triangle both measure five units.

To find the third segment, we can use the Pythagorean Theorem since the x-axis is perpendicular to the y-axis. Recall that:

[tex]a^2 + b^2 = c^2[/tex]

Where a and b are the two legs and c is the hypotenuse.

Our two legs are 5 and 5. Hence:

[tex](5)^2 + (5)^2 = c^2[/tex]

Solve for the hypotenuse:

[tex]\displaystyle \begin{aligned} c &= \sqrt{(5)^2 + (5)^2} \\ &= \sqrt{2(5)^2} \\ &= 5\sqrt{2}\end{aligned}[/tex]

Hence, our perimeter will be:

[tex]\displaystyle P = 10 + 5\sqrt{2} \approx 17.1 \text{ units}[/tex]

In conclusion, the perimeter of the triangle is about 17.1 units.

Please find the value of x

Answers

Answer:

[tex]2x - 10 = 3x - 40 \\ x \: terms \: togather \\ 3x - 2x = - 1 0 + 40 \\ x = 30 \\ thank \: you[/tex]

(a) Write these in order of size starting with the smallest 0.8 78% ⅞ 0.71​

Answers

Answer:

0.71, 78%, 0.8, [tex]\frac{7}{8}[/tex]

Step-by-step explanation:

78% = 0.78

7/8 = 0.875

Pls help me i’ll really appreciate it!!

Answers

this is loki ez

but just go in order

How would I prove the congruency of these triangles?

Answers

Step-by-step explanation:

the radius cuts the segment into two equal parts because it is perpendicular to the chord

Answer:

Step-by-step explanation:

As O is the mid point of the circle

Similarly, B also becomes the mid point of the line AC.

So, line OB divides AB and BC equally.

Hence, lines AB = AC, but they are asking to prove congruency of triangles.

So, u have to join OA and OC.

Same way,   line OB divides ∠OBA and ∠OBC.

So it is proved that AB = AC

1 point Final grades are often computed using weighted averages. Some college professors use complicated weighted averages . Your college professor tells you he will give a 33%-67% split on grades between tests and homework where whichever average is higher will be the 67%. What will your final grade be if your homework average is 59 and your test average is 64? ​

Answers

Weighted average is the average of a set using different weight for each element in the set. The final grade when homework and test scores are 59 and 64 is 62.35

Given that:

[tex]Homework = 59[/tex]

[tex]Test = 64[/tex]

The test score is greater than the homework score. So, the test will be weighted using 67%, while the homework will be weighted using 33%.

The final grade is calculated as follows:

[tex]Grade = 67\% \times Test + 33\% \times Homework[/tex]

So, we have:

[tex]Grade = 67\% \times 64 + 33\% \times 59[/tex]

[tex]Grade = 42.88 + 19.47[/tex]

[tex]Grade = 62.35[/tex]

Hence, the final grade is 62.35

Read more about weighted average at:

https://brainly.com/question/18554478

Solve:
p -23 = 23
A. p = 24
B. p = 46
C. p = 52
D. p = 44

Answers

Answer:

The answer is B. p= 46

Step-by-step explanation:

23+23=46-23=23

Answer:

your answer is B

Step-by-step explanation:

PLS HELP ASAP GIVE ANSWER RQ
Add 5 to x, double what you have, then subtract 3 from the result and simplify the expression.
a.2x + 10
b.2x + 7
c.x + 7
d.2x – 7

Answers

ANSWER:
b. 2x+7

work shown

Which one of the following
lists correctly places these
rational numbers in order from
least to greatest?
-1.20, -1/5 -174-17g. -1.30

Answers

ANSWER:
in order from least to greatest
-174-17g
-1.30
-1.20
-1/5

What are the coordinates of the point on the directed line segment from (-10, -3)
to (10,7) that partitions the segment into a ratio of 3 to 2?

Answers

Answer:

p(x,y)= (2,3)

Step-by-step explanation:

i have used partition formula in the pic below. If there is any question you can ask me in comment.

Solve 15x squared + 40x

Answers

Answer:

265x{2} + 40x

Step-by-step explanation:

Squared mean to multiply the number times itself. So 15x times 15x.

[tex]15x^{2} = 225x[/tex]{2}

Then the problem says to add, but because one is squared and th other is not, they cannot be combined. So the answer is:

[tex]225x{2} + 40x

Answer:

see below

Step-by-step explanation:

15x^2 + 40x

These are not like terms so they cannot be combined.

If you mean

(15x) ^2 + 40x

(15x * 15x) + 40x

225x^2 + 40x

They are still not like terms so they cannot be combined.

What is the difference between the sum of 1/2 and 10 and the product of 1/2 and 10?

Answers

10.5-5=5.5

1 1/2 x 10 =5 and 1/2 + 10 = 10.5
10.5-5=5.5
the answer is 5.5

You have a cup with 19 coins inside. The total inside the cup is $1.30. Determine how many nickels and dimes are inside the cup. Use a system of equations. Be sure to defined the variables and show all your work. PLS HELP!

Answers

Answer:

7 dimes and 12 nickels.

Step-by-step explanation:

12 nickels = $0.60 and 7 dimes = $0.70. $0.70 + $0.60 = $1.30.

please help me please.

Answers

Step-by-step explanation:

For every clockwise 90-degree rotation on a point (x, y), the resulted transformation will be (y, -x).

Now, counterclockwise 270 degree rotation is equivalent to clockwise 90 degree rotation. Then, for instance, point H=(2 ,-1) will be transformed into the image H'=( -1,2)

Pringle's variety pack 18 cups for $6.48 cost per cup

Answers

Answer:

0.36

Step-by-step explanation:

Write 3.7777... As a mixed number

Answers

Answer:

3  7777/10000

Step-by-step explanation:

Answer:

[tex]3\frac{7}{9}[/tex]

Step-by-step explanation:

[tex]3.777...=3+0.777...[/tex]

[tex]0.777...=x\\7.777...=10x[/tex]

[tex]10x-x=7.777...-0.777...\\9x=7\\x=\frac{7}{9}[/tex]

The answer is [tex]3\frac{7}{9}[/tex]

3. I Need Help Please
Match the graph of the function with the function rule.


A. y = 3 • 2^x

B. y = 4 • 3^x

C. y = 2 • 3^x

D. y = 1 • 3^x

Answers

Answer:

D. y = 1 • 3^x

Step-by-step explanation:

Exponential functions have a horizontal asymptote. The equation of the horizontal asymptote is  

y

=

0

.

Horizontal Asymptote:  

y

=

0

Please help! This is due soon!!!
Write a function that has roots at x=2,6.

Answers

Answer:

x^2-8x+12

Step-by-step explanation:

(x-2)(x-6) roots= 2,6

x^2-6x-2x+12

=x^2-8x+12

how to solve this things

Answers

Answer:

8/5

Step-by-step explanation:

...................

smg membantu, mff kl slh

Identify the independent and dependent variables a store is having a sale over Labor Day weekend. The more purchases, the greater the profits

Answers

9514 1404 393

Answer:

independent: purchasesdependent: profits

Step-by-step explanation:

The relationship description tells you that profits depend on purchases. Therefore, profits are the dependent variable; purchases are the independent variable.

36. A function g is described below
.
g(x) = (x - 3)2 + 1
• The domain of g is all real numbers greater than 0.
The range of g is all real numbers greater than
or equal to -
F. 1
H. -3
G. 3
J. 10

Answers

Answer: F

Step-by-step explanation:

A square is always positive:

[tex](x-3)^2 \geq 0\\\\g(x)=(x-3)^2+1 \geq 1\\\\answer\ F\\[/tex]

Answer:

F.

Step-by-step explanation:

The expression (x - 3)^2 is always >= 0.

The minimum value of g occurs when x = 3 :- that is (3-3)^2 + 1 = 1.

The range of g(x) is all real numbers >=  1.

Perry currently has $180 dollars and is spending $6 per day. Nick has no money
but is earning $8teach day. After how many days will they have the same
amount of money?

Answers

Answer:

After 13 days (Rounded) If you dont round it's [tex]\frac{90}{7}[/tex] or 12[tex]\frac{6}{7}[/tex]

Step-by-step explanation:

Perry: 180 - 6x = 8x

180 - 6x + 6x = 8x + 6x

180 = 14x

180/14 = 14x/14

90/7 = x

Picture shown!

If f(x) = x^2, and
g(x) = x - 1, then
g(f(x)) = x^[?]+[?]

Answers

Answer:

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

? = 2

grey box = 1

Step-by-step explanation:

Answer:

g(f(x)) = [tex]x^{2}[/tex] + 1

2.
Graph the set of points. Which model is most appropriate for the set? (–6, –1), (–3, 2), (–1, 4), (2, 7)

A. linear
B. exponential
C. quadratic

Answers

Answer:

A. linear

Step-by-step explanation:

4.
Evaluate the expression below if
Y = -1 and y-3
3x-y

Answers

Answer:

• If y= -1 and x= -3-8

• If y= -3 and x= -1-1

Step-by-step explanation:

If you mean: Let y= -1 and x= -33x - y = ?3(-3) - (-1) = ?-9 - (-1) = ?-8If you mean:Let y= -3 and x= -13x - y = ?3(-1) - (-3) = ?-4 - (-3) = ?-1

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

jskaoqlqmsbdnsoqqk
[tex] \sqrt{5} \times \sqrt{15} \times \sqrt{3} [/tex]

Answers

Answer:

[tex] \sqrt{5} \times \sqrt{15} \times \sqrt{3} \\ \\ \sqrt{5 \times 15 \times 3} \\ \\ = 5 \times 3 \\ \\ = 15[/tex]

[tex]\\ \rm\longmapsto \sqrt{5}\times \sqrt{15}\times \sqrt{3}[/tex]

[tex]\\ \rm\longmapsto \sqrt{5\times 15\times 3}[/tex]

[tex]\\ \rm\longmapsto \sqrt{5\times 5\times 3\times 3}[/tex]

[tex]\\ \rm\longmapsto 5(3)[/tex]

[tex]\\ \rm\longmapsto 15[/tex]


WILL MARK BRAINLIEST: In a car park, 2/3 of the cars are red.
1/5 of the cars are blue.
What fraction of the cars are red or blue?

Answers

Answer:

13/15

Step-by-step explanation:

Answer:13/15

Step-by-step explanation:

4. 1 less than twice the square of a number

Answers

Answer:

2(x^2)-1

Step-by-step explanation:

The square of a number is just the number squared. We don't know what the number is so I will just say it is x. So we have 2 times x^2. Then we have to minus 1 from that. So 2(x^2)-1.

Hope this helps! :D

The expression "1 less than twice the square of a number" can be represented mathematically as [tex]\(2x^2 - 1\)[/tex], where x is the variable representing the number.

Expression: [tex]\(2x^2 - 1\)[/tex]

Step 1: Square the number x:

[tex]\((x)^2 = x^2\)[/tex]

Step 2: Multiply the squared number by 2:

[tex]\(2 \cdot x^2 = 2x^2\)[/tex]

Step 3: Subtract 1 from the result of step 2:

[tex]\(2x^2 - 1\)[/tex]

This is the final expression that represents "1 less than twice the square of a number."

For example, if we substitute a specific value for x, let's say x = 3:

Step 1: Square the number: [tex]\(3^2 = 9\)[/tex]

Step 2: Twice the squared number: [tex]\(2 \cdot 9 = 18\)[/tex]

Step 3: Subtract 1: 18 - 1 = 17

So, when x = 3, the expression [tex]\(2x^2 - 1\)[/tex] evaluates to 17.

To know more about square, refer here:

https://brainly.com/question/14123715

#SPJ3

Which of the following properties is this?

8x/3 • 3/8x = 1

Answers

Answer:

Multiplication

Step-by-step explanation:

Multiplication

Find the slope of a line that contains the two points. (-2, 8) and (1, 2)?

Answers

Answer:

The slope is -2

Step-by-step explanation:

(-2, 8) and (1, 2)

Slope formula:

m= (y2-y1)/(x2-x1)

Work:

m= (2 - 8)/(1 + 2)

m= (-6)/3

m = -2

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