If x² + xy = 62, y2 + xy = 82 then find
the positive value of x+y.
A) 11 B) 12
C) 13 D) 14

Answers

Answer 1
answer;B) 12

_________explanation:::

after adding both equation

we \: get..

{x}^{2} + xy + {y}^{2} + xy = 62 + 82 x^2 + y^2 + 2xy = 144 (x + y)^2 = 144 (x + y) = sqrt{144} x + y = 12

it may be helpful for u-------------------------plzzz mar it as a brilliant ans

Related Questions

• How many terms are in this expression? What
are they?
6x + 4y - 9
Please help

Answers

There are 3 terms and the terms are 6x, 4x, and -9

1/4 , 1, 4, 16, 64, ________, ________, ________

Answers

Answer:

256, 1024, 4096

Step-by-step explanation:

Multiply the number by 4 to get the next one.

Brainliest please

I think the answer is 256, 1024,4096

Can someone help me

Answers

Answer:

ok sooo just go over the grfat and mm  count it up to the dot.

Step-by-step explanation:

PLEASE HURRY

Which equation has only one solution?
O-5|=-1
O6-2x| =8
O 5x+ 10| =10
O-6x+ 3| = 0

Answers

Answer:

D

Step-by-step explanation:

|-6x+3|=0

-6x+3=0

-6x=-3

x=-3/-6

x=1/2

plzzzzzzzzzzzzzzzzzzzzzzzz

Answers

Happy new year have a good day

will mark brainliest ~ Select the correct answer. Which function is the inverse of f(x)= x^2 – 16 if the domain is
[tex]x \geqslant 0[/tex]

Answers

Step-by-step explanation:

y = x² - 16

x² = y + 16

x = sqrt(y + 16) as x is non-negative.

Therefore f^-1(x) = sqrt(x + 16). (A)

Answer:

the answer is A

Step-by-step explanation:

what type of transformation is described by (x,y)-(x+2,y+3)​

Answers

Answer:

reflection across the x axis.

Step-by-step explanation:

When you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. If you reflect over the line y = -x, the x-coordinate and y-coordinate change places and are negated (the signs are changed). the line y = x is the point (y, x). the line y = -x is the point (-y, -x).

Need help someone please help me!!

Answers

Step-by-step explanation:

g(r) = 25 - 3r

When r = 4, g(4) = 25 - 3(4) = 25 - 12 = 13.

Answer:

[tex]\boxed{\pink{\sf The\ required\ answer\ is\ 13 .}}[/tex]

Step-by-step explanation:

According to the Question , a function is given to us which is ,

[tex]\implies g(r) = 25 - 3r [/tex]

And we need to find the value of g(4) . So , substituting r = 4 , we have ;

[tex]\implies g(r) = 25 - 3r \\\\\implies g(4) = 25 - 3(4) \\\\ \implies g(4) = 25 - 12 \\\\\boxed{\red{\tt\implies g(4) = 13 }}[/tex]

Hence the required answer is 13.

Write the algebraic expression for...
The product of a number x and 10

Answers

Answer:

10x

Step-by-step explanation:

product In math means multiplication, whiles and means addition

2x +18 = 9x + 14 for x.​

Answers

Answer:

X= 4/7

Step-by-step explanation:

I used a calculator :)

2x-9x=14-18

-7x=-4

X=4/7

Answer 4/7

For f(x) = 4x + 1 and g(x) = x ^ 2 - 5 , find (f o g)(4)

Answers

Step-by-step explanation:

(f o g)(x)

= f(x² - 5)

= 4(x² - 5) + 1

= 4x² - 19.

Therefore (f o g)(4) = 4(4)² - 19 = 64 - 19 = 45.

Answer:

[tex]\boxed {\boxed {\sf 45}}[/tex]

Step-by-step explanation:

When solving a composition of function composition, work from the inside to the outside.

We have the composition:

(f o g)(4)

We must start on the inside, and find g(4) first.

1. g(4)

The function for g is:

[tex]g(x)=x^2-5[/tex]

Since we want to find g(4), we have to substitute 4 in for x.

[tex]g(4)=(4)^2-5[/tex]

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Addition, and Subtraction. First we should solve the exponent.

(4)²= 4*4= 16

[tex]g(4)=16-5[/tex]

Subtract 5 from 16.

[tex]g(4)= 11[/tex]

Now, since g(4) equals 11, we have:

(f o g)(4)= f(11)

2. f(11)

The function for f is:

[tex]f(x)= 4x+1[/tex]

We want to find f(11), so substitute 11 in for x.

[tex]f(11)= 4(11)+1[/tex]

Solve according to PEMDAS and multiply first.

[tex]f(11)= 44+1[/tex]

Add.

[tex]f(11)= 45[/tex]

(f o g)(4) is equal to 45.

A carpenter has 10 ½ feet of wooden plank. He cuts off 4 ¼ feet to replace the slat of deck and 3 ⅔ feet to repair a bannister. He uses the rest of the plank to fix a stair. How many feet of wood does the carpenter use to fix the stair?

Answers

Cobra Kai yehdhehdhehehebdhdhdvdgdhdhdhdbdhdbdh

Last year, Nancy bought a mountain bike for $570. Her bike has depreciated since she bought it. It is now worth $410. What percent did the value of Nancy’s bike depreciate over the past year? Round the the nearest whole percent.

Answers

It’s worth about 72% of the original value so about a 28% depreciation over the year

the points (-5,4)and (1,r) lie on a line with slope -1. Find the missing coordinates r.

Answers

Answer:

R has to be -2

Step-by-step explanation:

So to find a slope the formula is written as

Y2-Y1/ X2 -X1

We know X1 and X2 and Y1.

If we plug those in and put Y2 as the variable ”r”

You’ll get

[tex]\frac{r-4}{1+5}[/tex]

Now make that equal to -1 since thats the slope

If you solve the equation it should get you -2

Ruth is at the park standing next to a slide.
Ruth is 5 feet tall, and her shadow is 3 feet
long. If the shadow of the slide is 7.5 feet
long, what is the height of the slide? Assume
the triangles are similar.

Answers

Answer:

The slide is approximately 12.75 feet.

Step-by-step explanation:

We know that Ruth is 5 feet tall, and her shadow is 3 feet tall.

5 ÷ 3 = 1.7 when rounded to the nearest tenth

Therefore, the shadow height of an object multiplied by 1.7 is the height of the actual object.

If the shadow of the slide is 7.5 feet, we need to multiply 7.5 by 1.7.

7.5 x 1.7 = 12.75

Therefore, the slide is approximately 12.75 feet.

Hope this helps! :D

Find the distance between the two points. Write your answer as a decimal rounded to the hundredths place if needed.

(-9,1) and (-10, -11)​

Answers

Answer:

12.04

Step-by-step explanation:

The distance between two points can be found by using the formula

[tex]d = \sqrt{ ({x_1 - x_2})^{2} + ({y_1 - y_2})^{2} } \\[/tex]

From the question we have

[tex]d = \sqrt{ ({ - 9 - - 10})^{2} + ({1 - - 11})^{2} } \\ = \sqrt{ ({ - 9 + 10})^{2} + ({1 + 11})^{2} } \\ = \sqrt{ {1}^{2} + {12}^{2} } \\ = \sqrt{1 + 144} \\ = \sqrt{145} \: \: \: \: \: \: \: \: \\ = 12.041594[/tex]

We have the final answer as

12.04 to the nearest hundredth

Hope this helps you

What what is the range for the function f(x)=20x+4

Answers

Range: (−∞,∞),{y|y∈R}(-∞,∞),{y|y∈ℝ }

Someone please help me!

Answers

4.1 KM I think but I could be wrong but I’m pretty sure it’s 4.1

​If six people share 4 pints of lemonade equally, how much ​lemonade will each person receive? ​​

Answers

Answer:

1.5

i think

Step-by-step explanation:

On a scavenger hunt, you find 19 out of 20 objects. Write "19 out of 20" as a fraction, a decimal, and a percent

Answers

Fraction: 19/20

Decimal: 0.95

Percent: 95%

Lena makes home deliveries of groceries for a supermarket. Her only stops after she leaves the supermarket are at traffic lights and the homes where she makes the deliveries. The graph shows her distance from the store on her first trip of the day.
Give the domain of the function and relate the domain to the relationship described

Answers

What is the greatest possible number of stops she
made at traffic lights? Answer: 3

What is the equation of the line that passes through the point (4,5) with a zero slope?​

Answers

Answer:

x=5

Step-by-step explanation:

Since there is no slope, there must be a constant y.

The constant y for this coordinate is 5.

When we have the equation x=5, that creates a straight line through all coordinates with 5 as a y-value.

1) Graph the quadratic function given in standard form and identify the key features. Include at least 5 points on your
graph.
y = -x2 - 2x + 1
Axis of Symmetry:
Vertex:
Y-intercept:
Domain:
Range:

Answers

Answer:

Please find attached the graph of the quadratic function is created using Microsoft Excel

1) The line of symmetry is x = -1

2) The vertex is (-1, 2)

3) The y-intercept is (0, 1)

4) The domain is -∞ ≤ x ≤ ∞

5) The range is 2 ≥ y ≥ -∞

Step-by-step explanation:

The given equation is y = -x² - 2·x + 1

The general vertex form is y = a·(x - h)² + k

h = -b/(2·a) = 2/(-2) = -1

k = f(h) = -(-1)² - 2×(-1) + 1 = 2

Therefore;

1) The line of symmetry goes through the vertex and the line of symmetry is x = -1

2) The vertex = (h, k) = (-1, 2)

3) The y-intercept is the coordinate of the point where x = 0 which is  (0, 1)

4) The domain are the possible x-values, therefore, the domain = -∞ ≤ x ≤ ∞

5) The range is the possible values y-values.

From the graph, we have the range = 2 ≥ y ≥ -∞

The graph of the quadratic function is created using Microsoft Excel by generating y-values based on the equation and using the graphing function to insert a two dimensional graph of the generated combination of x and y values as shown in the attached figure.

simplify fully: (9(x+7)^2)/(3(x-1)(x+7))

Answers

Step-by-step explanation:

9(x + 7)² divided by 3(x - 1)(x + 7)

= 3(x + 7)/(x - 1).

A box of cereal has a width of 4 inches, and a length of 8 inches and a height of 12 inches. What is the volume of the box, in cubic inches?

A box has a width of 4 inches, a length of 8 inches, and a height of 12 inches.
Use the formula V = l w h, where V represents the volume, l represents the length, w represents the width, and h represents the height.

Answers

Answer:

Volume=384 inches squared

Step-by-step explanation:

Multiply the width to the length. Therefore it would be 32. Next you multiply 32 to your height, giving you an answer of 384

Simple. 12in cubed.

Also if u wanted me to be VERY specific as to what 12in cubed equals it would be 1728.

Whether a team had zero, one, or two Liberos for the first
sets of the match, they may designate new Liberos for the
deciding set.​

Answers

Answer:

Whether a team had zero, one, or two Liberos for the first

sets of the match, they may designate new Liberos for the

deciding set.​

sheet at the start of the match. If zero or one Libero is designated on the line-up sheet, the coach may select a different Libero for subsequent sets, but may not have two Liberos. If two Liberos are designated on the line-up sheet for Set 1, those are the only two Liberos who may play for that team for the match. b.

Step-by-step explanation:

No. Whether a team designates one or two Liberos for the start of the match, the player(s) designated as Libero prior to the match will be the only players who may participate as a Libero in the match, except in the cases where re- designation is permitted

Please do it I don’t know how to

Answers

Answer:

Step-by-step explanation:

I'm that's hard to do

An exercise bike increased in price from $415 to $498 find the percent increase in the cost of the exercise bike

Answers

Answer:

20%

Step-by-step explanation:

((498/415)-1)*100

= (1.2-1)*100

= 0.2*100

= 20

shreya has 40 pairs of shoes stacked in boxes if a pair is 2 shoes how many shoes does shreya have

Answers

Answer:

80 shoes

Step-by-step explanation:

40 times 2= 80

What is the answer to this math problem it's confusing? 40-(27+3)/2

Answers

Answer:

Anwsers is 25

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

Use the correct order of operations.

40 - (27 + 3)/2 = 40 - 30/2 = 40 - 15 = 25

Answer: 25

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