I NEED HELP PLEASE

Select the correct answer.


Which set of coordinates satisfies the equations x-2y= -1 and 2x + 3y= 12?

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Answer:

D

Step-by-step explanation:

i beleive the answer is D

random words so brainly doesnt delete my answer again for no reason d ;lkm dfkslfjks fjdsfdnfjnv fheryqoiwr bnmxm,nxvbkfldj uyeuqiowerhtuirqgyt jbnnkfamcx vnkscjvhsdf

Answer:

The system results in a false statement.

Step-by-step explanation:

Let's actually solve the system

x-4y=1 (1)

5x-20y=4 (2)

Using the elimination method

Eliminate y by multiplying equ (1) by -5

We have,

-5x + 20y = -5 (3)

Add equ (3) and (2)

-5x + 20y = -5

5x -  20y =  4

 0   = -1

The system results in a false statement.

Answer:

It is a false statement, hence it is option choice a

Step-by-step explanation:

Answer:

f(x) has the greater absolute maximum

Step-by-step explanation:

[tex]f(x)=-x^2-4x+3 \\\\f'(x)=-2x-4=-2(x+2)[/tex]

so f'(x)=0 for x = -2 and f(-2)=-4+8+3=11-4=7

so f(x) has the greater absolute maximum

hope this helps

Answer:

0, 11

Step-by-step explanation:

[tex]-x^2+11x=0<=>x(11-x)=0<=>x=0 \ or \ x=11[/tex]

Answer:

x = 0     OR     x = 11

Step-by-step explanation:

=> [tex]-x^2+11x = 0[/tex]

Taking x common

=> x(-x+11) = 0

Either,

x = 0    OR     -x+11 = 0

x = 0     OR     x = 11

Answer:

1.2 hours or 1 hour 12 minutes

Step-by-step explanation:

We can use ratios to solve

1 hour        x hours

------------ = ------------

15 trees      18 trees    

Using cross products

1*18 = 15x

Divide by 15

18/15 = x

1.2 hours

1.2 * 60 minutes = 72 minutes

1 hour 12 minutes

Answer:

it took him 1 hour and 12 minutes

Step-by-step explanation:

well you divide 60 (cuz an hour is 60 minutes) by 15 and u get 4

then u multiply 4 by 3 and u get 12

then u add 1 hour and 12 minutes

hope this helped :)

Answer:

[tex]11x^2-2x-6[/tex]

Step-by-step explanation:

[tex](4x^2+3x)+(7x^2-5x-6)= \\\\(4x^2+7x^2)+(3x-5x)-6= \\\\11x^2-2x-6[/tex]

Hope this helps!

Answer:

With a principal = 7200$, interest rate = 14.25% = 0.1425 (compounded quarterly), the amount of money(M) after n years is calculated by formula:

M = Principal x (1 + rate)^time

   = 7200 x (1 + 0.1425/4)^(nx4)

(the rate is divided by 4 and the time is year x 4, because this is compounded quarterly, 1 year has 4 quarters, each quarter has 3 months)

=> After 3 years:

M = 7200 x (1 + 0.1425/4)^(3x4) = 10958.7951$

=> After 10 years:

M =  7200 x (1 + 0.1425/4)^(10x4) =29203.4074$

=> After 14 years:

M =  7200 x (1 + 0.1425/4)^(14x4) = 51129.7818$

=> After 20 years:

M =  7200 x (1 + 0.1425/4)^(20x4) = 118449.862$

Hope this helps!

Answer:

[tex]Orange\ area = A^2(\sqrt{3}/4 - \pi/8) = 0.0403A^2[/tex]

Step-by-step explanation:

First let's find the area of the triangle, using the formula:

[tex]Area\_triangle = side^2\sqrt{3}/4[/tex]

[tex]Area\_triangle = A^2\sqrt{3}/4[/tex]

Now, let's find the area of each circular sector of 60° (internal angle of a equilateral triangle):

[tex]Area\_sector = \pi*radius^2*60/360[/tex]

[tex]Area\_sector = \pi*(A/2)^2/6[/tex]

[tex]Area\_sector = \pi*A^2/24[/tex]

Now, To calculate the orange area in the center, we have:

[tex]Orange\ area = Area\_triangle - 3*Area\_sector[/tex]

[tex]Orange\ area = A^2\sqrt{3}/4 - \pi*A^2/8[/tex]

[tex]Orange\ area = A^2(\sqrt{3}/4 - \pi/8)[/tex]

[tex]Orange\ area = 0.0403A^2[/tex]

Answer:

2 and one half

Step-by-step explanation:

Given

ABC = (4,4),(7,8),(10,4)

A'B'C' = (10,10),(17,20),(25,10)

Required:

Find the Scale Factor

Let the scale factor be represented by s

The relationship between ABC, A'B'C' and s is given as

[tex]s(ABC) = A'B'C'[/tex]

From the given parameters;

A = (4,4) when A' = (10,10)

Using this values;we have

[tex]s * (4,4) = (10,10)[/tex]

Divide both sides by (4,4)

[tex]\frac{s * (4,4)}{(4,4)} = \frac{(10,10)}{(4,4)}[/tex]

[tex]s = \frac{(10,10)}{(4,4)}[/tex]

Divide 10 by 4; This gives 2.5

So,

s = 2.5

Using Point B and B'

B = (7,8) when A' = (17,20)

[tex]s * (7,8) = (17,20)[/tex]

Divide both sides by (7,8)

[tex]\frac{s * (7,8)}{(7,8)} = \frac{(17,20)}{(7,8)}[/tex]

[tex]s = \frac{(17,20)}{(7,8)}[/tex]

Divide 17 by 7 and 20 by 8; This gives 2.5

So,

s = 2.5

Using Point C and C'

C = (10,4) when C' = (25,10)

[tex]s * (10,4) = (25,10)[/tex]

Divide both sides by (10,4)

[tex]\frac{s * (10,4)}{(10,4)} = \frac{(25,10)}{(10,4)}[/tex]

[tex]s= \frac{(25,10)}{(10,4)}[/tex]

Divide 25 by 10 and 10 by 4; This gives 2.5

So,

s = 2.5

Hence, the scale factor is 2 and one-half([tex]2\frac{1}{2}[/tex])

Answer:

2 1/2

Step-by-step explanation:

Answer:

Step-by-step explanation:

$50 - $48.02 = $2 - $0.02 = $1.98

Answer:

the sum of the exponents is 2.

Step-by-step explanation:

Answer:

The Bottom 2

Step-by-step explanation:

Answer:

A 20% discount.

Step-by-step explanation:

$8 of $40 is 8/40, which is then simplified to be 1/5. 1/5 of 100 is 20, so it's a 20% discount.

We are giving a 20% cut price.

$8 of $forty is 8/forty, which is then simplified to be 1/five. 1/5 of 100 is 20, so it's a 20% discount.

The definition of discount is decreased charges or something being bought at a rate lower than that object is typically sold for. An example of something defined as a discount is a handbag sold for 50 percent off its everyday price or a shop that focuses on selling fashion designer objects at below-marketplace prices.

Preferred advantages of presenting discounts draw clients. As mentioned, discounts are very attractive to clients and won't simplest bring new customers however also can carry back previous customers. Discounting products and services, particularly in-call for ones, is a great manner to get interested.

Learn more about discounts here:  https://brainly.com/question/1153322

#SPJ2

Answer:

I believe the answer is 8.48 seconds

I hope this helps.

If the answer is correct, please vote me brainliest!

Answer:  Option C

(C) 8.48 minutes

Step-by-step explanation:

Answer:

The correct option is 4.

4) Doing two distance formulas to show that adjacent sides are not the same length.

Step-by-step explanation:

Parallelogram is a quadrilateral which has opposite sides equals and parallel. Example of a parallelogram are rhombus, rectangle, square etc.

We can prove that a quadrilateral MNOP is a parallelogram. If we find the slopes of all four sides and compare those of the opposite ends, same slopes would indicate the opposite sides are parallel, hence the quarilateral is a parallelogram. We can also find the distance of two opposing sides, and slopes of twp opposing sides to determine whether it is a parallelogram or not. The most difficult approach is that diagonals bisect each other at same point.

However, using only two distance formulas will not give us enough information to determine whether a side is parallel or not.

Answer:

BC, CA and AB.

Step-by-step explanation:

m < B = 180 - 77 - 45 = 58 degrees.

The larger the angle the larger is the opposite side.

The angles are 45, 58 and 77 so the shortest side is opposite 35 and is BC.

So from least to greatest the lengths are:

BC, CA and AB.

Answer:

Question 9

Step-by-step explanation:

9a:

i. 23

ii. 195

iii. 2.76

9b:

i. 32, 83, 4.35

ii. 14, 11, 2.46

Answer:

i dont uderstand what is the actual question meant to be

Step-by-step explanation:

Answer:

A:

(4x+5)(3x+10)=

(12x^2) + (40x) + (15x) + (50)

12x^2 + 55x + 50

B: 2nd degree trinomial.

C:  it is demonstrated in part A because when we added it, the variable do not change and neither do the  exponents.  

Step-by-step explanation:

do not copy. used this on my test.

Answer:

[tex]3(3x +2y)[/tex] and [tex]9x +6y[/tex] are equivalent to [tex]3(x + 3y + 2x - y)[/tex]

Step-by-step explanation:

Given

[tex]3(x + 3y + 2x - y)[/tex]

Required

Possible Equivalents

To start with; we need to simplify the expression in the bracket;

[tex]3(x + 3y + 2x - y)[/tex]

Collect like terms

[tex]3(x + 2x + 3y - y)[/tex]

[tex]3(3x +2y)[/tex]

At this point; we can conclude that [tex]3(3x +2y)[/tex] is equivalent to [tex]3(x + 3y + 2x - y)[/tex]

Solving further, by expanding the bracket

[tex]3(3x +2y)[/tex]

[tex]3*3x +3*2y[/tex]

[tex]9x +6y[/tex]

At this point; we can also conclude that [tex]9x +6y[/tex] is equivalent to [tex]3(x + 3y + 2x - y)[/tex]

Hence,

[tex]3(3x +2y)[/tex] and [tex]9x +6y[/tex] are equivalent to [tex]3(x + 3y + 2x - y)[/tex]

Answer:

The probability that 6 out of the next 8 individuals in his community are in favor of the president.

P( X=6) = 0.070 or 7 percentage

Step-by-step explanation:

Step(i):-

Given data the researcher has obtained data that states that 45% of citizens are in favor of the president

probability of success  'p' = 45% or 0.45

                                       q = 1-0.45 = 0.55

Given random sample size 'n' = 8

Let 'X' be the random variable

let 'X' = 6

[tex]P(X=r) = n_{C_{r} } (p)^{r} (q)^{n-r}[/tex]

The probability that 6 out of the next 8 individuals in his community are in favor of the president.

[tex]P(X=6) = 8_{C_{6} } (0.45)^{6} (0.55)^{8-6}[/tex]

[tex]8_{C_{6} } = \frac{8!}{(8-6)!6!} = \frac{8 X 7 X 6!}{2 X 1 X 6!} =\frac{8 X 7}{2 x1} = 28[/tex]

P( X=6) = 28 × 0.00830 ×0.3025

P( X=6) = 0.070

Conclusion:-

The probability that 6 out of the next 8 individuals in his community are in favor of the president.

P( X=6) = 0.070 or 7 percentage

Answer:

28

Step-by-step explanation:

Answer:

1.34 feet/seconds

Step-by-step explanation:

Looking at the above question, we would be converting 55 miles per hour to feet per seconds.

From the above question, we are given the following conversion values

1 minute = 3,600 seconds

1 mile = 5,280 feet

55 miles per hour = 55 mile / 1 hour

So,

If 1 mile = 5,280 feet

55 miles = x feet

We cross Multiply

x = 5,280 × 55

x = 290,400 feet

Hence, 55 miles = 290,400 feet

1 hour = 60 minutes

If 1 minute = 3,600 seconds

60 minutes = x seconds

We cross multiply

x = 60 × 3,600

x = 216,000 seconds.

This means

60 minutes = 216,000 seconds

In other to find out how fast is the car is,

Speed = Distance / Time

Speed = 290,400 feet/216,000 seconds

Speed = 1.3444444444 feet/seconds

To the to the correct number of significant figures, the car is traveling at 1.34 feet per second.

Answer:

y = 50 x = 10.

Step-by-step explanation:

Let's solve for y first.

We know the line angle 80 and angle 2y-5 is on a 180 degree line.

Now we can do our work:

180 - 85 = 95

2y - 5 = 95

95 + 5 = 100

100 ÷ 2 = 50

2(50) - 5 = 95?

The equation is correct, therefore y = 50.

No we do the same thing for the other angles, 90 and 3x + 55.

Again, 180 line.

180 - 95 = 85

3x + 55 = 85

85 - 55 = 30

30 ÷ 3 = 10

3(10) + 55 = 85?

The equation is correct therefore x = 10.

Thus, y = 50 and x = 10.

Answer:

-9

y= x + 3

2

2

Step-by-step explanation:

its simple just follow my steps

Answer:

Step-by-step explanation:

[tex]g^{-1} (-3)=7\\[/tex]

let h(x)=y

y=2x-3

flip x and y

x=2y-3

2y=x+3

[tex]y=\frac{1}{2}(x+3)\\or~h^{-1}(x)=\frac{1}{2}(x+3)\\(h^{-1} oh)(x)=h^{-1}(h(x))=h^{-1}(2x-3)=\frac{1}{2}(2x-3+3)=\frac{1}{2}(2x)=x\\(h^{-1}oh)(1)=1[/tex]

Answer:

i need the table

Step-by-step explanation:

But usually it has something to do with an exponent

Answer:

25

Step-by-step explanation:

[tex]2^4+3^2\\2 \cdot 2 \cdot 2 \cdot 2+3 \cdot 3\\16+9\\25[/tex]

Answer:

Step-by-step explanation:

[tex]2^{4} +3^{2} \\16 + 9\\=25[/tex]

Answer:

Step-by-step explanation:

First, we need to find 80% of 400

400 x 0.8 = 320

Now 50% of 400 is 200

320 - 200 = 120

Cary donated:

Answer:

1783 sq. Units

Step-by-step explanation:

Answer:

$9.75 earned per hour

Step-by-step explanation:

370,50 ÷38= 9.75

Answer:

$9.75/hr

Step-by-step explanation:

$370.50/38=$9.75

Answer:

B. Rotation then Dilation

Step-by-step explanation:

Dilation is making the object larger or smaller.

Rotation is turning the object around a point.

Reflection is reflecting it over a line

Translation is moving the object.

ΔDEF is rotated 180° first.

After it has been rotated, it will be dilated into ΔD'E'F'.

Our correct answer is B. Rotation then Dilation.

Answer: Its B

Step-by-step explanation:

Answer:

The answer is option B.

f(x) = 5x² - 3

g(x) = x² - 4x - 8

(f - g)(x) = 5x² - 3 - ( x² - 4x - 8)

= 5x² - 3 - x² + 4x + 8

= 4x² + 4x + 5 option B

Hope this helps.