Solve for x and y simultaneously if:
x+4=2y and y2-xy+21=0

Answers

Answer 1

Answer:

Step-by-step explanation:

x=−10, y=−3

x=10, y=7

y=7,x=10

y=−3,x=−10


Related Questions

qué número entero está entre -2 y 5​

Answers

Answer:

1.5

Step-by-step explanation:

-2,-1,0,1,2,3,4,5

Le quitamos un número hasta llegar al medio. En el medio hay dos números, el 1 y el 2. Pues tenemos que buscar el promedio de los dos (1+2=3 y 3÷2=1.5).

Right triangles 1-2 and 3 are given with all their angle measures and approximate side lengths.

Use one of the triangles to approximate the ratio WY/WX

A. 0.34
B. 0.94
C. 1.06
D. 2.76​

Answers

Answer:

0.34

Step-by-step explanation:

Considering the right-angled triangle XYW, an approximate ratio WY/WX is equal to 0.34. The correct option is A.

What is a right-angled triangle?

A right triangle is a triangle in which one of the angles is at a right angle or two of the sides are perpendicular, or more formally, an orthogonal triangle, formerly known as a rectangle triangle. The foundation of trigonometry is the relationship between the sides and various angles of the right triangle.

Considering the right-angled triangle XYW, we would apply the law of cosine to approximate the ratio WY/WX. Mathematically, the law of cosine is given by:

cos(θ) = Adj/Hyp

Where:

Adj is the adjacent side of a right-angled triangle.

Hyp is the hypotenuse of a right-angled triangle.

θ is the angle.

Substituting the given parameters into the formula, we have;

cos(θ) = WY/WX

cos(70) = 3.4/10

0.34 = 0.34.

Therefore, the correct option is A.

Read more on triangle ratio here:

brainly.com/question/26060091

#SPJ5

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Answers

Answer:

The answer would be letter C

Find X.
Someone please help me lol !

Answers

Answer:

x = 9

Step-by-step explanation:

Formula

The secant and tangent lines bear the following relationship

(tangent line )^2 = the outside secant line * length of the whole line

Givens

tangent line = 15

outside secant line = x

length of whole secant line = x + 16

Solution

15^2 = x ( x + 16)

15^2 = x^2 + 16x

225 = x^2 + 16x

x^2 + 16x - 225 = 0

Answer and Discussion

The equation has two factors.

(x - 9)(x + 25) =0

x + 25 has no meaning. There cannot be a negative length in this level of geometry.

The answer is x - 9 = 0

x = 9

Solve the system of equations graphically 3x-y=4, 2y+x=6

Answers

Answer:

y=2 x=2  

Step-by-step explanation:

  x = -2y + 6

3•(-2y+6) - y = 4

  - 7y = -14

7y = 14

y = 2

x = -2y+6

   y = 2

x = -2(2)+6 = 2

x=2

Step-by-step explanation:

solve for y in both equations

3x-y=4

subtract 3x from both sides

-y=4-3x

multiply the equation by -1

y=-1(4-3x)

2y+x=6

subtract both sides by x

2y=6-x

divide both sides by 2

y=(6-x)/2

Now set the y values equal to each other

-1(3x-4)=(6-x)/2

-3x+4=(6-x)/2

multiply both sides by 2

-6x+8=6-x

add 6x to both sides and subtract 6 to both sides

2=x

put 2 back into x for y=(6-x)/2

y=2

Hope that helps :)

50a3b-8ab factor the expression completely. part a: factor out the gcf (5 points) part b: factor the difference of perfect squares (5 points)

Answers

Answer:

Step-by-step explanation:

50a³b = 2⋅5²a³b

8ab = 2³ab

GCF = 2ab

50a³b - 8ab = 2ab(5²a² - 2²)

5²a² - 2² = (5a - 2)(5a + 2)

Chad boughtsome things at the store he paid for them was $6 he received $4.52 in change how much did the things that he bought cost​

Answers

Answer:$1.08 cents.

Step-by-step explanation:

$6 - $4.52 = $1.08.

11. Patrick is buying a new car. He can choose the body style, color, and
engine type. If there are 54 ways he can select a car, with three body
styles and two engine choices, how many colors are available?

Answers

Answer:

There are 9 different options he can choose

Step-by-step explanation:


Which list shows these numbers in order from least to greatest?
37
6
-5.17, 33,
26
5

Answers

Answer:

The answer to this question should be H

what can i add to 1,663,134 to make 2,148,431​

Answers

Answer:

485297

Step-by-step explanation:

What is the length, in feet, of the diagonal of a square with 8-foot sides? Round to the nearest tenth.

Answers

Answer:

11 feet

Step-by-step explanation:

Length of diagonal of square of side a = √2a

Here value of a = 8 feet

Therefore length of diagonal d = √2×8 = 1.414×8 =    11.312 feet

So after rounding to the nearest tenth the length of diagonal becomes 11 feet

Please help FASTTTT!!!!!!

Answers

Answer:

Step-by-step explanation:

if its only 1 base i chose to do the 8x20 (bh)

so 160 km squared

Answer:

going with the side that's facing towards you 8 × 20 = 160

Step-by-step explanation:

PLS I NED HELP PLS PLS PLS
ODE TO AN OTTER
I ought to be an otter, ‘cause when all is said and done
I could play along the riverbank, or stretch out in the sun.
I’d swim beneath the water, or backstroke up on top.
I’d dive in like a graceful swan, or do a belly flop.
My days would be so peaceful as a furry, swimming mammal
As opposed to bearing burdens like a one-humped desert camel.
I wouldn’t want to herd sheep like a working collie dog
Or end up an amphibian—a turtle, toad, or frog.
But oh, to be an otter! It would be a stroke of luck
Just to spend all day a-swimmin’, or a-rollin’ in the muck.
But oh, as fate would have it, I’m required to spend my time
Doing schoolwork. What a pity. It seems like such a crime.
The month of May has ended, and all across the nation
The schools have shut their doors, and all of the kids are on vacation.
Yet here it’s still the school year, and it can’t end too soon,
But the days are standing still, stretching till the end of June.
Ah, the otter, who, when sunshine makes the heat rise at the shore,
Stays within its coolsome burrow, eating clams and snails and more.
It swims along the river, catching crayfish, frogs, and trout.
I’d be an awesome otter—of that I have no doubt. Right now I watch the summer tapping at each window pane
And count the days till school is out, and I can swim again.
I’ll walk in glorious mud that squeezes coolness through my toes
And skip along the river, free from tests and schoolwork woes.
Till then, I’ll be an otter, but only in my head,
And start the summer early there, along the riverbed.
‘Cause if I was an otter and could romp and roll and roam,
I wouldn’t have to think of what to write for my class poem.



My days would be so peaceful as a furry, swimming mammal / As
opposed to bearing burdens like a one-humped desert camel.

What does the word burdens mean in the sentence above?

A. doubts
B. feelings
C. objects
D. rivers



Yet here it’s still the school year, and it can’t end too soon, / But the
days are standing still, stretching till the end of June.

What does the author mean by the phrase the days are standing still?

F. The days seem to pass by slowly.
G. The days are full of difficult work.
H. The speaker’s school day is longer than at most schools.
I. There are more school days left than the speaker thought.





I’ll walk in glorious mud that squeezes coolness through my toes / And
skip along the river, free from tests and schoolwork woes.

How would the effect of these lines be different if the author had used the word
walk instead of skip?

A. The speaker would seem less carefree.
B. The speaker would seem more friendly.
C. The speaker would seem to miss school.
D. The speaker would seem less serious.



What effect does the author’s use of language such as ‘cause, a-swimmin’, and
awesome create in the poem?

F. It makes the speaker sound casual.
G. It makes the speaker sound persuasive.
H. It makes the speaker seem caring toward all animals.
I. It makes the speaker seem knowledgeable about otters.



The end of the poem is ironic because the speaker.

A. decides to write a poem about an otter.
B. turns into an otter and swims away from school.
C. changes her mind and doesn’t want to be an otter.
D. has finished the poem that seemed too hard to write.

Answers

Answer:

what is the question???

Step-by-step explanation:

Find the volume of this cone.
Round to the nearest tenth.
7in
= 4in

Answers

Answer:

117.3 in^3

Step-by-step explanation:

Volume of cone=π(r^2)h/3=π·42·7/3≈117.3 in^3

Answer:

117.3in³

Step-by-step explanation:

πr²[tex]\frac{h}{3}[/tex]

3.14x4²x[tex]\frac{7}{3}[/tex]= 117.29

117.29 to nearest 10th= 117.3in³

The formula to find the circumference of a circle is C=pi r. Use 3.14 for

Answers

Answer: 12.56*3.14=39.4584037291

Step-by-step explanation:

Kelly buys 4 7··8 pounds of apples and 2 3··8 pounds of oranges. How many pounds of fruit does she buy altogether? Show Your work

Answers

Answer:

7 1/4 pounds

[tex]4\frac{7}{8} + 2\frac{3}{8}[/tex]

[tex]6\frac{7 + 3}{8}[/tex]

= [tex]6\frac{10}{8}[/tex]

convert the improper fraction to a mixed fraction

10/8 = 1 2/8 = 1 1/4

Add the 1 1/4 to 6 = 7 1/4

Step-by-step explanation:

Kelly buys 4 7/8 pounds of apples and 2 3/8 pounds of oranges. How many pounds of fruit does she buy altogether? Show Your work

If Sally purchases a car for $22,000 with a 5 year loan having a 2.5% interest rate, how much simple
interest will she have to pay on the loan?

A.$2,750.00
B.$19,250.00
C.$24,750.00
D.$275,000.00

Answers

It is out of A or D but I want to go with A


A.5,8 and 4,5
B.5,8 and 4,3
C. 4,5 and 4,3

Answers

Answer: I think it's D.

Find the 8th term of the arithmetic sequence
-5x + 3, x + 9,7x + 15, ...

Answers

The answer is 17x+15

please help as soon as possible

Answers

X=8 because multiply subtract and add

combine like terms 9y + 3y + 5x​

Answers

Answer:

=12y+5x

Step-by-step explanation:

Answer:

12y+ 5x

Step-by-step explanation:

9y + 3y + 5x​

9y and 3y are like terms

9y+3y = 12y

12y+ 5x

Select two answer choioces

Answers

Answer:

C or 3rd option

Step-by-step explanation:

1/3 - 2/5

15/15 - 6/15

9/15

B is not correct

2/5 - 1/3

this will be a negative answer


Find the distance between A(0, 1) and B(-4, 6) to the nearest tenth. ​

Answers

Answer

you have to use distance formula witch is square root of y1,y2 and x1,x2 squared. after you use the formula you should get 6.4 as your answer

d=6.4

Step-by-step explanation:

D I think is the answer

Ruby uses 3/8 of a cup of blueberries for her smoothie. If she has 4
cups of blueberries, how many smoothies can she make?
plz help quick

Answers

Answer:

10 smoothies

Step-by-step explanation:

because each 3/8th yields 2 smoothies and the leftovers from each cup made 2 more.

Plzz help will mark brainiest!!!!!!

Answer choices for first box : 4, 20, and 34
answer choices for second box: decrease, preserve, and increase

Answers

Answer:

The length of the resulting line is 20 units

and for the second one it would be preserve

Step-by-step explanation:

Hope this helps :)

PLEASE HELP ASAP PLEASE HELP

Answers

equal tp 4 inches because all sides of a triangle are usually the samw

1.55y-(5y-17)/100=0.02

Answers

Multiply both sides by 100
1.55y -(5y-17)/100 * (100) = (0.02)*(100)
1.55y -(5y-17) = 2

Simply both sides of the equation
-3.45y + 17 = 2

Subtract 17 from both sides
-3.45y + 17-17 = 2-17
-3.45y = -15

Divide both sides by -3.45.
-3.45y = -15
-3.45 -3.45

y = 4.347826

1.
Which statement best describes the graph of the
linear equation 2x + 2y = 2
A. The graph has a slope of 1 and a y-intercept
of 2.
B. The graph has a slope of 1 and a y-intercept
of 1
C. The graph has a slope of -1 and a y-intercept
of 2.
D. The graph has a slope of -1 and a y-intercept
of 1

Answers

Given:

The linear equation is:

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

To find:

The statement that best describes the graph of the given linear equation.

Solution:

The slope intercept form of a linear function is:

[tex]y=mx+b[/tex]            ...(i)

Where, m is the slope anf b is the y-intercept.

We have,

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

It can be written as:

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

[tex]y=\dfrac{2-2x}{2}[/tex]

[tex]y=1-x[/tex]

[tex]y=-x+1[/tex]             (ii)

On comparing (i) and (ii), we get

[tex]m=-1,b=1[/tex]

Therefore, the graph has a slope of -1 and a y-intercept of 1. Hence option D is correct.

-5s=−13
solve for s .

Answers

Answer:

The answer is going to be 13/5 or 2.6

Step-by-step explanation:

You are going to need to divide both sides by the constant of -5 in order to get s by itsef. After you divide both sides by -5, you will get -13/-5 which two negatives divided by a positive so it would be 13/5 or if you turn it into an integer, it would be 2.6

In a right triangle, the height is 15 cm and the hypotenuse is 45 cm. What is the base?

A.1800
B.47.4
C.2250
D.42.4


Hurryyyy

Answers

Answer:

D) 42.4

Step-by-step explanation:

a² + b² = c² -----> a² + 15² = 45²

45² - 15² = a² ----->  2025 - 225 = 1800²

42.426406.... ----> D) 42.4

D .................................
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