I solved this and think the range is: y>=3.Did I solve correctly?

Answer:

Tim will stop for a drink 12 times

Step-by-step explanation:

Tim drinks water 3 times every twenty minutes. 80 divided by 20 equals 4. Take the 4 times and multiply it by 3 to get the amount of times he stopped to drink water.

I hope this helps

Answer:

WHAT IS THATT??

Step-by-step explanation:

OSKSKQKANSNSNSNSZKNSNSNSN

Use the formula for the simple interest

I= interest

p= initial deposit

r=rate

t= time

clear the equation for r

replace data in the formula

pass the decimal to percentage

7%

the interest rate is 7%

Answer:

B

Step-by-step explanation:

Using a minor key within a song is usually to make it more sad or negative in emotion, though with this question the fast tempo should already rule out A because it is quite the opposite to laziness.

Answer:

150 is the number

Step-by-step explanation:

The equation we should set up is from the sentence "14% of what number is 21"
To rearrange it into a proper equation, replace "of what number" with " * x "
and "is" with "="
The sentence becomes:

14% * x = 21

since 14% = 0.14, replace 14% with 0.14 in the equation

0.14 * x = 21

divide both sides by 0.14

x = 21 / 0.14

x =  150

Answer:

False. It has no solutions.

Step-by-step explanation:

Hope it helps! =D

Answer:If a graph of a quadratic,

f

(

x

)

, does not have an x-intercept

then

f

(

x

)

=

0

has no Real solutions.

Explanation:

The x-axis is composed of all points for which

f

(

x

)

(or, if you prefer,

y

) is equal to

0

If the graph of

f

(

x

)

does not have an x-intercept

then it has no (Real) points for which

f

(

x

)

=

0  

Step-by-step explanation:

No x-intercept means that it does not cross the x-axis. Thus two solutions is definitely ruled out.

However, if you DO NOT INCLUDE a point of coincidence (Vertex coincides with the x-axis) in the phrase "does not have an x-intercept". Then there could be a single value solution if you equate the quadratic to 0. Some people say that it still has two in such a case but they are both the same value. I do not like this way of thinking!

On the other hand, if you DO INCLUDE a point of coincidence in the phrase, then the plot does not cross the x-axis nor does any point on the curve coincide with it. In such an interpretation there is NO SOLUTION THAT IS REAL.  hopes this helps

a rental car company charges $42.50 per day to rent a car intense sense for every mile driven Lydia wants to run a car knowing that she plans to drive 225 miles in she has at most $150 to spend

Let

x -------> the number of miles

y -----> the total charge

we have that

the linear equation that represent this problem is

y=0.10x+42.50

For x=225 miles

substitute teh value of x

y=0.10(225)+42.50

y=$65

Solution

The answer is given in the graph below

48 years falls between 40 to 50 on the graph

If you trace from a point close to 50 on the y -axis to meet the slope line

the point of intersection between the trace and the slope line, trace it down to x-axis

The value falls in between 6years and 9 years

1) Gathering the data

Time: 10 yrs ago

Interest rate (r) : 9% (0.09)

Future Value: 300

Initial Deposit:?

2) Since the current balance is given, let's call it Future Value because the amount that made that $300 is what we need to find out. Let's go find the Future Value since it's been 10 yrs ago. Plugging into the formula we have:

Notice that, since this investment was compounded yearly, so n=1.

3) So the initial deposit, 10 years ago was approximately $126.72

A function which models the data in the given table is y = 3848.2x^0.054. Also, an approximate speed of sound when the water temperature is 100°F is equal to 4935 ft/sec.

A line of best fit can be defined as a statistical (analytical) tool that is used in conjunction with a scatter plot, in order to determine whether or not there's any association (correlation) between a data.

In this scenario, the temperature of water would be plotted on the x-axis of the scatter plot while the speed of sound would be plotted on the y-axis of the scatter plot.

By critically observing the scatter plot (see attachment) which models the data in the given table, we can reasonably and logically deduce that a function for the line of best fit is given by:

y = 3848.2x^0.054

Next, we would determine the speed of sound when the water temperature is 100°F as follows:

y = 3848.2x^0.054

y = 3848.2 × (100)^0.054

y = 3848.2 × 1.2823

y = 4934.55 ≈ 4935 ft/sec.

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In this case, we are given the value of one angle and told to find the value of angle x. To do so, we will try to relate them based on the position they have in the diagram.

Notice that the two parallel lines split the space into two. One space is in between the lines, and the other space is outside the lines. We can see that both angles are located outside of the parallel lines.

Now, see that the third line splits the space into two. One space is on the left of the third line, and the other one is on the right of the third line. From the diagram, we can tell that each angle is on an opposite side of the third line.

This two relations between these angles (being outside the parallel lines and on opposite sides of third line) gives them the name of alternate outer angles. This angles have the property that they have the same measure.

So, we have the following

so the measure of x, in degrees, is 56°.

To calculate the balance on the account after 5 years you have to calculate the simple interest using the formula:

A= total accured amount

P= principal amount

r= interest rate expressed in decimals

t=time

For

P=$5250

r=0.035

t=5years

The balance on the account will be:

At the end of the 5 years there will be $6168.75

The given multiplication expression is 3/4÷3/8 or 3/4×8/3

Mathematical expressions that include multiplication are called multiplication expressions. We combine the integers and then the like variables to simplify the equation. We will therefore obtain x to the second power if we multiply two xs together.

An answer to a multiplication sentence is obtained by multiplying the various components. The multiplier (first number), multiplicand (second number), and product are the components of a multiplication phrase (third number).

The simplest form of an expression is one in which terms cannot be concatenated. In order to write 3 + (2 5) simply: Start by carrying out the procedure between parenthesis. The addition should then be done.

Given, 3/4÷3/8

3/4×8/3

=2

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When he buys the cheapest soap, the amount he save per bar is $0.25.

Money is anything that's used as a medium of exchange.

In this case, three bars of soap cost $3.75. Each bar will bre:

= $3.75 / 3

= $1.25

Also, a package of eight bars of soap for $12. Each bar will be:

= $12 / 8

= $1.5

The amount that will be saved will be the difference between the values above. This'll be:

= $1.5 - $1.25

= $0.25

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[tex]x^{3}[/tex]-2[tex]x^{2}[/tex]+9x-18 This is a degree 3 polynomial with real coefficients having zeros 3 and 4 − 3 i and a lead coefficient of 1

Algebraic expressions called polynomials include constants and indeterminates. Polynomials can be thought of as a type of mathematics. Nearly all branches of mathematics employ them to express numbers, and calculus is one of those branches where they play a crucial role.

complex zeros always occur in pairs.

zeros are 2,3i,-3i

f(x)=(x-2)(x-3i)(x+3i)=(x-2)([tex]x^{2}[/tex]-[tex]3i^{2}[/tex])

=(x-2)([tex]x^{2}[/tex]-[tex]9i^{2}[/tex])

=(x-2)([tex]x^{2}[/tex]+9)

=[tex]x^{3}[/tex]-2[tex]x^{2}[/tex]+9x-18

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There aren't any SARS-CoV-2 variations listed as Variant Of Interest right now.

A genetic variant with certain genetic markers linked to altered receptor binding, decreased ability of antibodies to neutralise an infection or immunisation, decreased therapy effectiveness, potential impact on diagnosis, or anticipated rise in disease severity.

Potential characteristics of an interesting variant:

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The complete question is-

Labels for SARS-CoV-2 Variants of Interest and Concern.

wo mechanics worked on a car the first mechanic worked for 10 hours and the second mechanic worked for 15 hours together they charged a total of $2,450 what was the rate charge per hour by each mechanic if the sum of the two rates was $185 per hour

Let

x -----> the rate of the first mechanic

y -----> the rate of the second mechanic

we have that

x+y=185 -------> equation A

10x+15y=2,450 ------> equation B

Solve the system of equations by graphing

see the attached figure

therefore

The formula for the simple interest I after an amount P is invested for period t at a simple interest rate r is:

In this problem, the simple interest annual rate is 8% = 0.08. But the period t of the investment is

t = 90 days = 3 months = (12/4) months = (1/4) year

And the rate is:

Then, using P = 175, the interest, in dollars, is:

And the amount A, in dollars, in the account after that period is:

Answers:

Simple interest: $3.50

Ammount: $178.50

Graphing a Quadratic Equation

Let's take as an example the function:

The vertex form of a quadratic function is:

Where a is the leading coefficient and (h,k) is the vertex.

If a is positive, the function is concave up, if negative the function is concave down.

The first step is to obtain the parameters by comparing the given equation with the general equation.

Thus, we have: a = -2. Vertex = (3,5)

Now we locate the vertex in the coordinate plane and draw the parabola opening down.

For more precision, we can substitute some points around the vertex, like for example:

x={1,2,4,5}

We get the y-coordinates:

y={-3,3,3,-3}

Then we plot the graph as follows:

the current amount of employees today represents an increase of 26% from the previous year, this can be written as:

then,

where x is the number of employees the previous year, then, solve for x

Answer:

there were 35000 employees one year ago.

Answer:

(3y + 11)° = 50°

10y° = 130°

(4x - 22)° = 50°

(7x + 4)° = 130°

Explanation:

First, find the value of the variable. Let's find y.

(3y + 11) + 10y = 180 (sum of adjacent angles on a straight line)

Simplify and solve the equation.

13y + 11 = 180

13y = 169

y = 13

Substitute y into the angle measures to find values.

3(13) + 11 = 50

10(13) = 130

Hence, (3y + 11)° = 50° and 10y° = 130°.

Next, find x.

(7x + 4) + (4x - 22) = 180 (sum of adjacent angles on a straight line)

Simplify and solve the equation.

11x - 18 = 180

11x = 198

x = 18

Substitute x into the angle measures to find values.

4(18) - 22 = 50

7(18) + 4 = 130

Hence, (4x - 22)° = 50° and (7x + 4)° = 130°.

Alternatively, you do not have to find x to find (4x - 22)° and (7x + 4)°.

4x - 22 = 3y + 11 = 50° (vertically opposite angles)

7x + 4 = 10y = 130° (vertically opposite angles)

If Mark bought a pen for $0.49, a box of pencils for $1.29, and a pad of paper for $0.98, then he had spend a total of $ 2.76, and if 10 ice cream cones were brought for $0.35 each, then the total amount paid is $3.5

As per the question statement, Mark bought a pen for $0.49, a box of pencils for $1.29, and a pad of paper for $0.98,

And the coach bought 10 ice cream cones for $0.35 each.

We are required to calculate the following:

(a) The total amount Mark had to pay

(b) The total amount the coach had to pay

Starting with part (a),

If Mark bought a pen for $0.49, a box of pencils for $1.29, and a pad of paper for $0.98, then the total amount he will have to pay will simply be the summation of the individual costs, that is, $[0.49 + 1.29 + 0.98] = $ 2.76.

Now solving part (b),

If the coach bought 10 ice cream cones for $0.35 each, then the total amount he/she will have to pay, will be a simple multiplication of the price of one ice cream, with the number of ice creams bought, that is,

$[0.35 * 10] =$3.5

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To answer this question, we can use the two-point form of the line equation:

Then, we have the points:

(3, 2) --->x1 = 3, y1 = 2

(-2, -18)---> x2 =-2, y2 = -18

Then, we have:

The question in the slope-intercept form is:

-12/5

This is a improper fraction, so lect's corvert it into a mixed fraction

2

5 12

2

Written as a mixed fraction -2 2/5

It's negative

The possible answers are -2 2/5

12/-5

-12/5

The formula rewritten for b1 is b1 = 2a/h - b2

The unknown base of the trapezoid is 5 inches

A subject of formula is simply described as the variable that is made to stand alone on one side of the equality sign.

It is the variable expressed in terms of other variables in an expression.

Given the formula for the area of a trapezoid as;

a = 1/2h(b1+b2)

Where;

Let's make b1 the subject of formula

cross multiply

(b1+b2)h = 2a

Now, divide both sides by h, we have!

b1 + b2 = 2a/h

Take b2 over the equality sign

b1 = 2a/h - b2

Now, substitute the values into the formula

b1 = 2(78)/12 - 8

Expand the bracket

b1 = 156/12 - 8

Find the quotient

b1 = 13 - 8

find the difference

b1 = 5 inches

Hence, the value is 5 inches

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Graphing the function: