How many solutions does the nonlinear system of equations graphed below have?
A. Two B. One C. Four D. Zero
I think 4 but I'm not sure​

Answer:

x=7

Step-by-step explanation:

inverse problems

48+1=49

the root of 49 is 7

Answer:

x = ± 7

Step-by-step explanation:

Given

x² - 48 = 1 ( add 48 to both sides )

x² = 49 ( take the square root of both sides )

x = ± [tex]\sqrt{49}[/tex] = ± 7

Answer: 4 workers

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Explanation:

We have 9 workers painting walls in a house. Let's say the total square feet needed to be painted is 9000 square feet. I picked some arbitrary large multiple of 9, so that it leads to 9000/9 = 1000 square feet per worker.

In other words, each worker paints 1000 square feet.

They can do the job in 48 hours, which means their rate is 1000/48 = 125/6 square feet per hour approximately.

After 8 hours, each worker paints 8*(125/6) = 500/3 square feet. So all 9 workers painted 9*(500/3) = 1500 square feet

Put another way: they got 8/48 = 1/6 of the job done after 8 hours, so (1/6)*9000 = 1500 sq feet of wall has been painted so far. This leaves 9000-1500 = 7500 sq ft unpainted.

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Let x be the number of workers that leave.

There are 9-x people still on the job.

The 7500 sq ft of left over wall is divided among the 9-x people. Each worker gets 7500/(9-x) sq feet of wall to paint.

Earlier we found each worker's rate was 125/6 sq ft per hour. If they complete the remaining job in 72 hours, then,

(rate)*(time) = (amount of job done)

(125/6)*(72) = 7500/(9-x)

1500 = 7500/(9-x)

1500(9-x) = 7500

9-x = 7500/1500

9-x = 5

-x = 5-9

-x = -4

x = 4

4 workers went home.

If 4 workers went home, then 9-4 = 5 workers remain

They each have 7500/5 = 1500 sq ft of wall to paint, which helps confirm the answer.

Answer:

Step-by-step explanation:

Answer:

- 4 3/20 The other person is correct

Step-by-step explanation:

The water is 399 feet fell.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Two years ago, the water level in a local reservoir fell 834 feet.

Last year, the water level rose 435 feet.

So, the water level of the reservoir change overall during these two years

= -834 + 435

= -399

Hence, the water is 399 feet fell.

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Answer:

2x - 2

Step-by-step explanation:

Move the numbers to be near their mates

4x - 2x + 8 - 10

Then solve as much as you can

4x - 2 = 2x, 8 - 10 = -2

2x - 2

Answer:

6.15 miles

Step-by-step explanation:

Step one:

given data

Nicole ran 3 2/5 miles and

Ana ran 2 3/4 miles on Saturday

Required:

The total distance covered by both friends

Step two:

total distance= 3 2/5 + 2 3/4

let us convert the mixed fraction to a simple fraction

=17/5+11/4

=68+55/20

=123/20 miles

or

=6.15 miles

Answer:

D. 20

Step-by-step explanation:

Since you are subtracting, you can add 4 and 1. The sum is 5. 20/4 is equal to 5 so R = 20.

Answer:

D

Step-by-step explanation:

Answer:

D) 3 units right and  5 units down

Step-by-step explanation:

following describes the translation of a point from (0,-3) to (3,-8)

ok so from (0,-3) to (3,-8)

(x,y)

x= right or left movement

y= up or down movement

3 units right and  5 units down

Answer:

A congruence transformation is a transformation that doesn't change the size or shape of an object. There are three main types of congruence transformations, and those are reflections (flips), rotations (turns), and translations (slides).

Step-by-step explanation:

i hope that helps

Using a linear function, the statement that best describes when she advances to the next phase is: 75 + 3x > 90.

A linear function is modeled by:

y = mx + b

In which:

Considering that she already has 75 points, and earns 3 points for each correct answer, her score is modeled by the following function:

T = 75 + 3x.

She advances to the next phase if she scores over 90 points, hence the statement is:

T > 90

75 + 3x > 90.

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Answer:

c.3x+75>90

Step-by-step explanation:

Answer:

D is true

Step-by-step explanation:

A, B, C, and E are supplementary pairs so they cant equel each other.

Answer:

the answer would be d! got it right on plato.

Step-by-step explanation:

Answer:

I believe the first one but I'm not 100% sure.

Answer:

18 students

Step-by-step explanation:

Now think of it in this form. 12 students wanna learn french which is 24% and in this problem we have to find 24% of "x" is 12. The answer is obviously 50. Now go to German and you can see that 18% want to learn German. All you have to do is find 50% of 18 to get your answer which is 9. Now follow that same pattern with the Spanish one. If 36% want to learn Spanish, just find 50% of it or half of it and that could be done by doing 36 divided by 2 to get 18 as your answer. Another way to do it is my turning 50% into 0.5 and multiplying it by 36 to get your answer. As a result, your answer is 18 students want to learn Spanish.

Answer:

A constant rate of change- means that something changes by the same amount during equal intervals.

Step-by-step explanation:

Answer:

X=10, Y=4

Step-by-step explanation:

Along the y-axis, x = 0.

2(0) + 5y = 20

5y = 20

y = 4

Your y-intercept is at (0,4).

Along the x-axis, y = 0

2x + 5(0) = 20

2x = 20

x = 10

Your x-intercept is at (10,0).

Answer:

-2x-5y=20 (if x= 2 )

[tex] - 2 \times 5 - 5 \times y = 20 [/tex]

[tex] - 20 - 5 \times y = 20[/tex]

[tex] - 5 \times y = 40[/tex]

[tex]y = 8[/tex]

Answer:

y = 0.14 x^2 - 1.43 x + 10.75

Step-by-step explanation

got it correct on the test

The quadratic function best models this set of data is y = 10.75x² - 1.43x + 0.14.

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

[tex]\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2} \\\\\\\\rm c = \dfrac{\sum y -m \sum x}{n}[/tex]

We have data shown in the table:

It is required to find the quadratic function best models this set of data.

Let the quadratic function is:

y = ax² + bx + c

We can find the values of a, b, and c from the table,  which are constants.

From the table:

a = 10.75

b = -1.43

c = 0.14

The quadratic function is:

y = 10.75x² - 1.43x + 0.14

Thus, the quadratic function best models this set of data is y = 10.75x² - 1.43x + 0.14.

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Answer:

2 1/3 meters

Step-by-step explanation:

You would simply divide 14 by 6 which gives you 2.3 repeating and 0.3 repeating is the fraction 1/3.

Answer:

For the gavin's lawn mowing problem that got deleted, the answer is 9.

Step-by-step explanation:

If Gavin earns $42 for mowing his neighbor's lawn 7 times, then he earns $6 every time he mows his neighbor's lawn. If he earns $54 at the same rate, he would have to mow his neighbor's lawn 54/6 = 9 times

Answer:

Step-by-step explanation:

First, start out with the parent function:

[tex]y = b^{x}[/tex]

Now, we look at the transformations, and make the equation.

We see that the graph shifted down 4 units, since the graph's horizontal asymptote is at y = -4.

[tex]y = b^{x} - 4[/tex]

We see point (0, -3) to point (1, -1). The value of b would be 3. The reason is that when you plug 0 in, you get 1, then 1 - 4 equals 3. (0, -3),

Then, when you plug in 1, you get 3, then 3 - 4 equals -1. This matches up with the graph.

This is the answer:

[tex]y = 3^{x}-4[/tex]

#teamtrees #WAP (Water And Plant)

Answer:-5/8

Step-by-step explanation:

Answer: 99% sure its (1,4)

Step-by-step explanation:

Answer:

uhhh 16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Answer:

So x can have values from zero to 449

Step-by-step explanation:

0.40 X plus 20 < 200

0.4x +20 < 200

Putting the values of x for 0,1,2,

0.4x +20 < 200

0.4(0) +20 < 200

20< 200

0.4x +20 < 200

0.4(1) +20 < 200

20.4 <200

0.4(2) +20 < 200

20.8 <200

The maximum value which x can have is less than 450 because 450 would give a number equal to 200 and we have the inequality of a number being less than 200

0.4x +20 < 200

0.4(450) +20 < 200

180+20<  200

200 <20  which is wrong.

So x can have values from zero to 449

0.4x +20 < 200

0.4(449) +20 < 200

179.6+20<  200

199.6 <200  

X  can have the values fom 0 to 449.

Answer:

-70

Step-by-step explanation:

just use a calculator my g

Answer-70

Step-by-step explanation:

-100 plus 50 = -50 then you add -20 making it -70

Answer:

[tex]2500[/tex]

Step-by-step explanation:

[tex]2.5*10^3\ can\ simply\ be\ expanded\ as:\\2.5*10*10*10\\=25*10*10\\=250*10\\=2500[/tex]

Answer:

2500

Step-by-step explanation:

Answer:

[tex]Actual\ Length : Scale\ Length = 8 : 1[/tex]

Step-by-step explanation:

Given

[tex]Actual\ Length = 12\frac{1}{2}ft[/tex]

[tex]Scale\ Length = 1\frac{9}{16}ft[/tex] --- See attachment

Required

Determine the scale used

The scale of the drawing can be represented using the following ratio

[tex]Scale = Actual\ Length : Scale\ Length[/tex]

Substitute values for actual and scale lengths

[tex]Scale = 12\frac{1}{2}: 1\frac{9}{16}[/tex]

Convert to improper numbers

[tex]Scale = \frac{25}{2}: \frac{25}{16}[/tex]

Convert to division:

[tex]Scale = \frac{25}{2}/\frac{25}{16}[/tex]

[tex]Scale = \frac{25}{2}*\frac{16}{25}[/tex]

[tex]Scale = \frac{1}{2}*\frac{16}{1}[/tex]

[tex]Scale = \frac{16}{2}[/tex]

[tex]Scale = \frac{8}{1}[/tex]

Convert to ratio

[tex]Scale = 8 : 1[/tex]

Hence, the scale of the drawing is:

[tex]Actual\ Length : Scale\ Length = 8 : 1[/tex]

9514 1404 393

Answer:

  a) yes; 12/15/17 ~ 20/25/x; SAS

  b) x = 28 1/3

Step-by-step explanation:

The left-side segments are in the ratio ...

  top : bottom = 12 : 8 = 3 : 2

The right side segments are in the ratio ...

  top : bottom = 15 : 10 = 3 : 2

These are the same ratio, and the angle at the peak is the same in both triangles, so the triangles are similar by the SAS postulate.

Normally, a similarity statement would identify the triangles by the labels on their vertices. Here, there are no such labels, so we choose to write the statement in terms of the side lengths, shortest to longest:

  12/15/17 ~ 20/25/x

__

The sides of similar triangles are proportional, so the ratio of longest to shortest sides will be the same in the two triangles. In the smaller triangle, the longest side is 17/12 times the length of the shortest side. The value of x will be 17/12 times the length of the shortest side in the larger triangle:

  x = 17/12 · 20 = 340/12

  x = 28 1/3

Using function concepts, it is found that the domain in which the function is decreasing is: [tex](-\infty,2][/tex]

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