A. [-2,3]
B. [-4,5]
C. [1,3]
D. [-5,0]

PLEASE ANSWER ASAP !!!

Answer:

11 and 9

Step-by-step explanation:

X+Y=20

X*Y=99

Y=20-X

X*(20-X)=99

20X-X^2=99

20X-X^2–99=0

-(X - 11) (X - 9) = 0

Two solutions

X-11=0, X=11

X-9=0, X=9

Y=20-X, so if X is 9, Y is 11

Y=20-X, so if X is 11, Y is 9

The two numbers are 11 and 9

Answer:

x= -7/2

y= 5/4

Step-by-step explanation:

x-2y=-11

x+2y = -6

then isolate x and set equal to each other

-2y - 6 = 2y -11

4y = 5

y = 5/4

then solve for x using y.

x+5/2 = -6

x = -7/2

Answer:

the answer is 67.44 hope it helps smile

Answer: 1/4

Step-by-step explanation:

Answer:

166.67

Step-by-step explanation:

We have, 6% × x = 10 or, 6/100 × x = 10

Multiplying both sides by 100 and dividing both sides by 6,

we have x = 10 × 100/6

x = 166.67

If you are using a calculator, simply enter 10 × 100 ÷ 6, which will give you the answer.

Hope this helps

Answer:

3.5 hours

Step-by-step explanation:

Distance = 21 miles

Speed * time

Speed * time = distance

Tom speed = 2 mph

Brian = 4 mph

Let time = t

Brian distance + Tom's distance = total distance

4t + 2t = 21

6t = 21

t = 21 / 6

t = 3.5 hours

Answer:

The given line has slope m=1

the perpendicular line MUST have slope -1

Since it MUST eat (-3,2), the intercept formula says

B = y - mx = 2 - (-1)(-3)  = 2 - 3 = -1

so the equation of the perpendicular line that eats point W is

y = -x -1

The lines y=x+3 and it's perpendicular y = -x-1 intersect at

  y = x+3 = -x-1

   2x+3 = -1

  2x = -4

  x = -2

THe intersection point is

(-2,1)

Finally by distance formula,

The distance between (-3,2) and (-2,1) is

 sqrt ( (-3 - -2)^2 + ( 2-1)^2)

= sqrt( (-3 + 2)^2 + (2-1)^2)

 = sqrt( (-1)^2 + 1^2)

  = sqrt ( 1+1)

 = sqrt(2)

Step-by-step explanation:

The distance between line l and the point E (-7, 0) will be;

D = 3.

What is distance between point and line?

The distance between a line ax + by + c = 0 and point (p, q) will be;

D = |ap + bq + c|/√a² + b²

Given that;

Equation of line;

y = -3

And, Point = E (- 7, 0)

Hence, The distance between a line and point is calculated as;

Equation of line;

y = -3

y + 3 = 0

Compare with ax + by + c = 0, we get;

a = 0, b = 1 and c = 3

And, Point = (p, q) = (-7, 0)

Thus, The distance between a line and point is;

D = |0 + 0 + 3|/√0+1

D = 3

So, The distance between line l and the point E (-7, 0) will be;

D = 3.

Learn more about the equation of line visit:

https://brainly.com/question/24656140

#SPJ2

Answer:

first one is correct

Step-by-step explanation:

Answer:

70.243

Step-by-step explanation:

hope this helps you!!

Answer:

0.243 + 70.3 = 70.543

Answer:

20 months

Step-by-step explanation:

A leaky valve on the water meter overcharges Ahmed for one Liter of water for every [tex]2[/tex] months. The overcharged amount [tex]w[/tex] varies directly with time [tex]t[/tex].

(a)

As the overcharged amount [tex]w[/tex] varies directly with time [tex]t[/tex],

[tex]w=kt[/tex]

Here, [tex]k[/tex] is a constant.

A leaky valve on the water meter overcharges Ahmed for one Liter of water for every [tex]2[/tex] months.

Put [tex]w=1\,,\,t=2[/tex]

[tex]1=2k\\k=\frac{1}{2}[/tex]

So,

[tex]w=\frac{t}{2}[/tex]

(b)

To find the number of months it will take for Ahmed to be overcharged for 10 liters of water leaked, put [tex]w=10[/tex] in [tex]w=\frac{t}{2}[/tex]

[tex]10=\frac{t}{2}\\\\t=10(2)\\[/tex]

[tex]t=20[/tex] months

The answer for the following question is A) -b

Rational number is a number that can be written in the form of p/q. The correct expression that can represent a rational number is -b.

A rational number is a number that can be written in the form of p/q, where p and q are integers and the value of q≠0.

In order to find the expression that can represent a rational number, we need to find a number that can be represented in the form of p/q, Therefore, the correct option is -b.

Hence, the correct expression that can represent a rational number is -b.

Learn more about Rational Numbers:

https://brainly.com/question/2563850

Answer:

Area = 3.0 square cm

Step-by-step explanation:

By cosine formula,

WX² = WY² + XY² - 2(WY)(XY)cos(∠W)

WX² = (1.5)² + (4.8)² - 2(1.5)(4.8)cos(52°)

WX² = 2.25 + 23.04 - 8.866

WX = √(16.424)

WX = 4.05 cm

Since, area of a triangle with known sides = [tex]\sqrt{s(s-a)(s-b)(s-c)}[/tex]

Here, s = [tex]\frac{a+b+c}{2}[/tex]

And a, b, c are the sides of the triangle

By this formula,

s = [tex]\frac{1.5+4.8+4.05}{2}[/tex]

s = 5.2

Therefore, area of the triangle XYZ = [tex]\sqrt{5.2(5.2-1.5)(5.2-4.8)(5.2-4.05)}[/tex]

= [tex]\sqrt{5.2(3.7)(0.4)(1.15)}[/tex]

= [tex]\sqrt{8.85}[/tex]

= 2.97

≈ 3.0 square cm

Answer:

41 days

Step-by-step explanation:

512.5 ÷ 12.5 = 41 days

Answer:

58

Step-by-step explanation:

20+12= 32

it is a 90 degree angle so

90-32=58

58 is closest to 60

Answer:

16

Step-by-step explanation:

Answer:

Step-by-step explanation:

y + 7 = 1/4(x - 4)

y + 7 = 1/4x - 1

y = 1/4x - 8

i need an answer to this too

Answer:

3X+8 IS THE ANSWER FOR EQUATION

26 IS 2ND ANSWER

Please mark as brainliest

Have a great day, be safe and healthy

Thank u  

XD

Answer:

number of cats

[tex]90 \times \frac{4}{15} \\ 24cats[/tex]

Answer:

[tex]3x - 11[/tex]

Step-by-step explanation:

Given

[tex]\frac{3x^2 + 4x + 5}{x + 5}[/tex]

Required

Determine the quotient

First, we check if the divisor (x + 5) can divide the dividend (3x^2 + 4x + 5) without having a reminder

Equate the denominator to 0.

[tex]x + 5 = 0[/tex]

[tex]x = -5[/tex]

Substitute -5 for x in the numerator

[tex]3x^2 + 4x + 5 = 3*(-5)^2 + 4 * (-5) + 5[/tex]

[tex]3x^2 + 4x + 5 = 60[/tex]

This means that it has a reminder of 60

To get the quotient, we subtract 60 from the numerator and evaluate

[tex]\frac{3x^2 + 4x + 5}{x + 5}[/tex] becomes

[tex]\frac{3x^2 + 4x + 5 - 60}{x + 5}[/tex]

[tex]\frac{3x^2 + 4x - 55}{x + 5}[/tex]

Expand the numerator

[tex]\frac{3x^2 + 15x - 11x - 55}{x + 5}[/tex]

Factorize:

[tex]\frac{3x(x + 5) - 11(x + 5)}{x + 5}[/tex]

Factor out x + 5

[tex]\frac{(3x- 11)(x + 5)}{x + 5}[/tex]

Cancel out x + 5

[tex]3x - 11[/tex]

Hence, the quotient is [tex]3x - 11[/tex]

Answer:

17.75

Step-by-step explanation:

Answer:

12°

Step-by-step explanation:

supplements added together = 180°

Answer:

Since the line is not scaled, then how do we know for sure.  But, we do know that point A is the opposite of point C.   For example, if C = 150, then A = -150

Step-by-step explanation:

Since the line is not scaled, then how do we know for sure.  But, we do know that point A is the opposite of point C.   For example, if C = 150, then A = -150

Answer:

d

Step-by-step explanation: