Do you guys know the answers??

Answer:

x = 1, y = 5

Step-by-step explanation:

- 10x + 3y = 5 → (1)

x = y - 4 → (2)

Substitute x = y - 4 into (1)

- 10(y - 4) + 3y = 5 ← distribute parenthesis and simplify left side

- 10y + 40 + 3y = 5

- 7y + 40 = 5 ( subtract 40 from both sides )

- 7y = - 35 ( divide both sides by - 7 )

y = 5

Substitute y = 5 into (2)

x = 5 - 4 = 1

Answer:

10

Step-by-step explanation:

sqrt 40 = 6.3

6.3 round to the nearest ten is 10

9514 1404 393

Answer:

  6.3

Step-by-step explanation:

Almost any calculator can tell you the square root of 40 is about 6.324555...

Rounded to the nearest tenth, that is √40 ≈ 6.3

Answer:

She has to get a score of 88 on that test

Step-by-step explanation:

Take the average of the other grades, and that gives you 84.25. So she has to think about what rating she gives it is 85, and the rating is 88.

Hailey needs to score an 88 on the last exam in order to get an average of 85.

The overall average is the mean and the mean is calculated by adding up all the scores and then dividing by the number of exams.

There are 5 exams but only 4 scores. The 5th score will be denoted, "x" and the average we are looking for is 85.

The fifth score should therefore be:

Overall score = Sum of 5 exams / 5

85 = (86 + 94 + 76 + 81 + x) / 5

85 x 5 = 337 + x

425 = 337 + x

x = 425 - 337

= 88

In conclusion, Hailey needs a score of 88 on the fifth exam.

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Answer: The answer is x < 5/2 and x > -5.

Step-by-step explanation:

First you need to separate the inequality and keep x on one side to maintain consistency. For instance the problem-

\(\frac{5-2x}{3} > 0\\\frac{5-2x}{3} < 5\\\)

Now solve as normal.

*Note: When dividing a side or multiplying a side by a negative number, the sign of the inequality switches (this will be shown when I do the equation if it doesn't make since how I word it).

\(5-2x > 0*3\\5-2x < 5*3\)

\(-2x > 0-5\\-2x < 15-5\)

\(x < \frac{-5}{-2} =x < \frac{5}{2} \\x > \frac{10}{-2} =x > -5\)

So, x < 5/2 and x > -5.

If anything is confusing about the procedure just leave a comment, and I'll try to explain further.

The value of the underlined digit in the number 27,416,385.( 4 is the underlined number.) is the hundred thousandths place.

The symbols, from 0 to 9 can be described as a digit. For instance, the numbers 2 and 3 are used to represent the number 23.  however amount is represented by a number.

It should be noted that It may be expressed using one, two, three, or even more digits however only single symbol used to represent a number is a digit in the case above we can see that 4 is the hundred thousandths place.

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Answer:

it is -3

Step-by-step explanation:

go to x=-4 and see what the y value of the line is

Answer:

1

Step-by-step explanation:

Find the equation of the line. Start with the y-intercept, which is -1. Next find the slope by doing rise/run. To get from (0, -1) to (2, 0) you rise 1 and run 2, so the slope is 1/2.

The equation is y= 1/2x -1.

Plugin 4 for x and solve for y.

y = 1/2(4) -1

y = 2 - 1

y = 1

Answer:

Step-by-step explanation:

Answer:

y+4=–109(x-7)

please mark as brainliest

Answer:

13in :)

Step-by-step explanation:

KJASJDAJK its oki! The formula for the area of a square is Side x Side= Area, meaning you can just square root the area (since its a square all sides should be the same length) sqrt of 169 would give you 13!

Answer:

16

Step-by-step explanation:

(14+12+23+15)÷4=16

Answer:

16

Step-by-step explanation:

Hope this help

Answer:

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679

Answer:

3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 ... PI/4 = 1/1 - 1/3 + 1/5 - 1/7 + ... PI/2 = 2/1 * 2/3 * 4/3 * 4/5 * 6/5 * 6/7 * ... 2/PI = (1 - 1/22)(1 - 1/42)(1 - 1/62)...

Answer:

Step-by-step explanation:

Plot the point (4, -1) in the 4th Quadrant.

The slope (-3/4) tells us what to do next:

With your pencil point initially on (4, -1), move it 4 units to the right, to (8, -1).

With your point initially on (8, -10, move it down 3 units, to (8, -4).  Plot (darken) (8, -4).

Draw a line through (4, -1) AND (8, -4)

The equation of a line for the given slope and the coordinate point is 4y=-3x+8.

Given that, the line with the slope -3/4 passes through the point (4,-1).

We need to find the line of equations.

The slope-intercept form of a straight line is used to find the equation of a line. For the slope-intercept formula, we have to know the slope of the line and the intercept cut by the line with the y-axis. Let us consider a straight line of slope 'm' and y-intercept 'b'. The slope intercept form equation for a straight line with a slope, 'm', and 'b' as the y-intercept can be given as y = mx + b.

Now, substitute m=-3/4 and the point (4,-1) in y = mx + b and find the value of b.

That is, -1 = -3/4 (4)+b

⇒b=2

Then the equation becomes y=-3/4 x+2

⇒4y=-3x+8

Therefore, the equation of a line for the given slope and the coordinate point is 4y=-3x+8.

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Answer:

6

Step-by-step explanation:

good

Answer:

Bus A will take 75 minutes and Bus B will take 75 minutes as well.

Step-by-step explanation:

Say the buses start at 8 am and the first stop is 25 of 15 minutes, whenever they're supposed to stop:

Bus A: 8:25, 8:50, and 9:15

Bus B: 8:15, 8:30, 8:45, 9:00, and 9:15.

I hope this helped!

Answer:

D: $8,978.36

Step-by-step explanation:

A.

1. Mode: No mode. Median: 24. Mean: 30.875. Range: 50.

2. Mode: No mode. Median: 33.5. Mean: 43.9. Range: 85.

3. Mode: No mode. Median: 46. Mean: 43.571. Range: 61.

4. Mode: No mode. Median: 17. Mean: 18. Range: 28.

5. Mode: No mode. Median: 10.5. Mean: 13.5. Range: 27.

6. Mode: 15. Median: 22.5. Mean: 25.857. Range: 31.

B.

7. Mode: 4.3. Median: 4.2. Range: 2.1.

8. Mode: 18.6. Median: 18.6. Range: 0.8.

C.

9. Mode: No mode. Median: 4/9.

10. Mode: No mode. Median: 5/24.

The solution to the differential equation \(2^{\sqrt{x}}\frac{dy}{dx} = cosce(ln(y))\) is,

\(\frac{y sin(ln(y))}{2} - \frac{y cos(ln(y))}{2} = C - \frac{2 ln(2) \sqrt{x} + 2}{ln^2(2)2^{\sqrt{x}}}\).

Any equation with at least one ordinary or partial derivative of an unknown function is referred to as a differential equation.

The given differential equation is \(2^{\sqrt{x}}\frac{dy}{dx} = cosce(ln(y))\).

Now, multiplying both sides by dx we,

\(2^{\sqrt{x}}dy = cosce(ln(y))dx\).

Dividing both sides by \(2^{\sqrt{x}}\) we have,

\(sin(ln(y))dy = \frac{dx}{2^{\sqrt{x}}}\).

\(\[ \int sin(ln(y))dy = \int \frac{dx}{2^{\sqrt{x}}}\).

\(\frac{y sin(ln(y))}{2} - \frac{y cos(ln(y))}{2} = C - \frac{2 ln(2) \sqrt{x} + 2}{ln^2(2)2^{\sqrt{x}}}\).

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Answer:

.0025%

Step-by-step explanation:

You would first take 250 and divide it by 10 million

you would get .000025 you would then multiple it by 100 to get .0025

Answer:

0.5 = 0.500

Step-by-step explanation:

Both numbers are five-tenths. The zeros to the right of the 5 are not place holders and do not change the value of the number.

0.5 = 0.500

Answer:

See below for answers

Step-by-step explanation:

-12=-3x is the Addition Property of Equality because you are adding 12 to both sides which keeps the equation true.

4=x is the Division Property of Equality because you are dividing -3 to both sides which keeps the equation true.

x=4 is the Symmetric Property of Equality because since x and 4 are the same value, then it doesn't matter what order they are displayed in. In other words, x is equal to 4 as 4 is equal to x.

Answer:

See below

Step-by-step explanation:

-12 = -3x reason is the addition property of equality

4 = x reason is the division property of equality

x = 4 is the symmetric property of equality.

I'm not too sure about these ones, though. Good luck

Answer:

Step-by-step explanation:

14.65 or 14.7

Hope this helps!

Answer:

24/27

Step-by-step explanation:

9 x 3 = 27 and to keep the equation we do the same to the numerator so 8 x 3 = 24

Answer:

Number 4

Standard form - Not sure if right

y = − 0.2734375x^2 − 1.09375x +11.40625

Factored form - Not sure if right

y= 0.0390625 (−7x^2 −28x+292)

Number 5

Either form of the equation other than standard form

Vertex form : y = −(x +3)^2 + 25

Vertex of the parabola

(-3,25)

X and Y intercepts

x-intercept(s): (2,0) ,(−8,0)

y-intercept(s): (0,16)

Answer:

slope is 1/2

Step-by-step explanation:

rise over run.

Answer:

1/2

Step-by-step explanation:

to find the slope, think of it as rise/run. find two points on the line that pass exactly thorugh the intersection of two coordinates, in this case 2,1 and 4,2. then count the rise (1) and run (2)

Answer:43.1 km/h

Step-by-step explanation:

Suppose velocity of motorist \(\vec{v_1}=50\hat{j}\)

The appeared velocity of wind or resultant velocity is \(\vec{v_r}=60[\hat{i}\cdot \frac{1}{\sqrt{2}}+\hat{j}\cdot \frac{1}{\sqrt{2}}]\)

Suppose the true velocity of wind is \(v_2\)

so, \(\vec{v_1}+\vec{v_2}=\vec{v_r}\)

\(\vec{v_2}=\frac{60}{\sqrt{2}}\hat{i}+(\frac{60}{\sqrt{2}}-50)\hat{j}\\\vec{v_2}=42.42\hat{i}-7.57\hat{j}\\absolute\ velocity=\sqrt{42.42^2+(-7.57)2}=43.09\approx 43.1\ km/h\)

Answer:

51.3

Step-by-step explanation:

Tan(y) like all Tan Trig functions, is defined as the side opposite divided by the side adjacent.

The side adjacent is part of the reference angle.

The side opposite is not connected to the reference angle at all.

Side Opposite = 10

Side Adjacent = 8

Tan(y) = 10/8

Tan(y) = 1.25

y = Tan-1(1.25)

y = 51.34

y = 51.3

Answer:

Top left

Step-by-step explanation:

If an x value (domain) leads to more than one y-value (range), it is not a function. In other words, if each input value leads to only one output value, it is a function. It's still a function if the y-value leads to multiple x-values.

Thus, the mass is increasing at a rate of 0.15625 kg per hour, and the mass on this day is 4.5 kg.

Let's consider a general formula for finding the rate of increase:Rate of increase = k x original valueHere, k is a constant that represents the rate of increase per unit of time, and the original value is the initial value of the quantity being measured.

For example, if the original value is 3.2 kg and the rate of increase is 0.5 kg per hour, we can use the formula to calculate the mass at any time t as follows: Mass at

time t = 3.2 + (0.5 x t)

where t is the time elapsed in hours.In order to find k, we need to know the rate of increase and the original value.

Once we have these values, we can rearrange the formula to solve for

k:k = rate of increase / original value

For example, if the mass is increasing at a rate of 0.5 kg per hour and the original value is 3.2 kg, we can calculate k as follows:

k = 0.5 / 3.2k = 0.15625

To find the rate of increase on a specific day, we need to know how much time has elapsed since the original value was measured. Once we have this information, we can plug it into the formula we derived earlier:Mass at time t = 3.2 + (k x t)For example, if 8 hours have elapsed since the original value was measured, we can calculate the mass on that day as follows:

Mass at time t = 3.2 + (0.15625 x 8)

Mass at time t = 4.5 kg

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Answer:

Step-by-step explanation:

60 m in 1 hour
1 hour ----- 60 m

60 mins ----- 60 m

1 min -----  1 m

2mins ----- 2 m

The 9 adult tickets and 93 children tickets were purchased.Let's assume the number of adult tickets purchased is "a" and the number of children tickets purchased is "c."

According to the given information, children tickets cost $9 and adult tickets cost $11. So, the total cost of children tickets is 9c, and the total cost of adult tickets is 11a.

The problem also states that the total cost of all the tickets is $936. Therefore, we can write the following equation:

9c + 11a = 936

Additionally, it is mentioned that the number of children tickets purchased was three more than ten times the number of adult tickets purchased:

c = 10a + 3

We can now solve this system of equations to find the values of "a" and "c." By substituting the value of "c" from the second equation into the first equation, we have:

9(10a + 3) + 11a = 936

90a + 27 + 11a = 936

101a = 936 - 27

101a = 909

a = 909 / 101

a = 9

Substituting this value back into the second equation, we find:

c = 10(9) + 3

c = 90 + 3

c = 93.

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