Mathematics College

What is ​ 7/10 ​ expressed as a decimal? Enter your answer in the box.

Answers

Answer 1
Dividing a number by 10 moves the decimal over one place to the left.  Knowing this:

7 ÷ 10 = 0.7

Related Questions

Find the general form of the complete partial fraction decomposition of the integrand. use it to determine whether or not a term of each type listed below occurs in the complete partial fraction decomposition. select true if it does occur and false if it does not.

Answers

The answer is int(x^2-4x / X = 3).

In a random sample survey of 80 students at Torrey’s middle school, 24 students said that math was their favorite subject. There are a total of 300 students at this middle school. Based on the survey, which value is the BEST estimate for the number of students who would say that math is their favorite subject?

Answers

First, figure out the percentage of students that said math is their favorite subject in the 80 student sample.
[tex] \frac{24}{80} \times \frac{x}{100} \\ 80x = 2400 \\ x = 30 \\ 30\%[/tex]
Now, we multiply 300 by .3 to approximate how many students would choose math as their favorite subject
[tex]300 \times .3 = 90[/tex]
Estimating, 90 students would choose math as their favorite subject going off of the given data.

Final answer:

Based on the survey where 30% of 80 students favored math, the best estimate for the total number of students preferring math out of 300 at the middle school is 90 students.

Explanation:

In a random sample survey of 80 students at Torrey's middle school, 24 students said that math was their favorite subject. This represents 30% of the surveyed group (24 out of 80 students). To estimate the number of students who would say that math is their favorite subject throughout the entire middle school, we can use this percentage.

To find the estimated number of students who favor math in the whole school, which has 300 students, we apply the 30% to the total school population:

Total number of students: 300Percentage favoring math: 30%Estimated number of students favoring math: 300 students * 0.30 = 90 students

Therefore, the best estimate for the number of students who would say that math is their favorite subject at this middle school is 90 students.

20 points math pls help brainliest.
Which table matches the function shown in the graph?
Which table matches the function shown in the graph?

Answers

the first one I believe is the first choice and the second one I believe is the last choice.

Not 100% on both hope it helps though

number 1 is a

number 2 d


10q-3r=14 write a formula for g (r) in terms of r

Answers

Answer:

3/10r +7/5

Step-by-step explanation:

10q−3r=14

10q=3r-14

10q=3r/10 +14/10

q=3/10r+7/5

Final answer:

To find g(r) in terms of r, the equation 10q-3r=14 is manipulated algebraically to isolate q as g(r)=(14+3r)/10.

Explanation:

The student's question involves solving a linear equation for a variable. This is a standard algebraic task often encountered in high school mathematics. The student is given the equation 10q-3r=14 and is asked to write a formula for g(r) in terms of r, implying a need to solve for q as a function of r, which can be named g(r).

To isolate q, we perform algebraic manipulations:

First, add 3r to both sides of the equation to get 10q = 14 + 3r.Next, divide both sides of the equation by 10 to solve for q, which gives us q = (14 + 3r) / 10.Last, we rename q as g(r) which results in the final function: g(r) = (14 + 3r) / 10.

This function represents q in terms of r, and g(r) is thereby defined.

Hey can you please help me posted picture of question

Answers

Sample space for:
First shooting a basketball. Two options: X or O
Then rolling a die. Six options: 1, 2, 3, 4, 5, or 6

Sample space:
X1
X2
X3
X4
X5
X6
O1
O2
O3
O4
O5
O6

Answer: Options:
A. X1
C. O6
F. X6

Experts/ace/geniuses helppp asapp

Answers

Point E is the correct answer! :D
[tex] \sqrt{10}=3.1622... [/tex]
therefore if you round the 3.1622... it would be closer to 3.2 so point F is actually correct 

20 pt question on angles plz help

Answers

just set it up as 2x +5 =5x-25
and you should get x=10
congruent means that bot S and T are the same degrees
 so we can set S and T equal to each other and solve:

2x +5 = 5x-25

subtract 2x from each side:

5 = 3x-25

 add 25 to each side:

30 = 3x
 divide both sides by 3 to get x

x = 30 / 3
x = 10
 now we know x so replace x with 10 and solve for S

S = 2(10) +5 = 20+5 = 25

 angle S = 25 degrees



What are the relationships among radii, chords, tangents, and inscribed angles?

Answers

The relationship between these four sectors are:

The plural of radius is what we call radii. For any line that joins the center or is joining the center to any point in the circumference of a circle is what we call radii.
Note:
If there is an infinite line from the center to circumference then is it called infinite radii.

For any line that joins or is joining two points on the circumference of a circle is known as chord and any line touching the circle is what we call as tangent to the circle.

Lastly, the intersection of bisector angles is known as in-center or inscribed.

Below are attached pictures of figures



A statistician observes the number of heads that occur when a coin is tossed 1000 times

Answers

A coin wouldn't be a coin without two sides

The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture. she performs a two-tail test of the null hypothesis that the mean for the stressed oak furniture is 650. the calculated value of the z test statistic is a positive number that leads to a p-value of 0.080 for the test. 22 referring to scenario 9-6, suppose the engineer had decided that the alternative hypothesis to test was that the mean was greater than 650. what would be the p-value of this one-tail test? 0.040 0.960 0.840 0.160

Answers

Hello. 

Since the calculated p-value for a two-tailed test is 0.080, the p-value of a one-tailed test is half of it, which is 0.040.

Remember that the p-value is the area of the rejection region under the normal curve. The p-value of a two-tailed test will double the p-value of a single-tailed test considering all parameters to be the same. 

Final answer:

The p-value for the one-tailed test, with the alternative hypothesis that the mean is greater than 650, is half the two-tailed p-value. Hence, the one-tailed p-value is 0.040.

Explanation:

The quality control engineer initially performed a two-tailed test with the null hypothesis that the mean force necessary to produce cracks in stressed oak furniture is 650. The calculated z-test statistic led to a two-tailed test p-value of 0.080. If the engineer had chosen an alternative hypothesis that the mean was greater than 650, the test would have been a one-tailed test. In a one-tailed test, you would only consider the probability on the side of the distribution that corresponds to the alternative hypothesis. Therefore, since the original two-tailed p-value was 0.080, for the one-tailed test, we would take half of that value which results in a p-value of 0.040.

The equation of a hyperbola is 5x2 − y2 = 25. What is the area of the asymptote rectangle?

Answers

[tex]\bf \textit{hyperbolas, horizontal traverse axis } \\\\ \cfrac{(x- h)^2}{ a^2}-\cfrac{(y- k)^2}{ b^2}=1 \qquad \begin{cases} center\ ( h, k)\\ vertices\ ( h\pm a, k) \end{cases}\\\\ -------------------------------\\\\ 5x^2-y^2=25\implies \cfrac{5x^2}{25}-\cfrac{y^2}{25}=1\implies \cfrac{x^2}{5}-\cfrac{y^2}{5^2}=1 \\\\\\ \cfrac{(x-0)^2}{(\sqrt{5})^2}-\cfrac{(y-0)^2}{5^2}=1\qquad \begin{cases} a=\sqrt{5}\\ b=5 \end{cases}[/tex]

now, the asymptotes rectangle is a rectangle that is (a+a) in width and (b+b) in length, thus its area is 2a*2b,

[tex]\bf \stackrel{2a}{2\sqrt{5}}~~\times ~~\stackrel{2b}{2\cdot 5}\implies 20\sqrt{5}[/tex]

icole wants to buy a pair of jeans. The original cost of the jeans is $42.50, and the markup is 10 percent. How much will she have to pay for the jeans? $44.50 $46.75 $52.50

Answers

42.50 * 10% or 0.10 = 4.25

42.50 + 4.25 = 46.75.

She will have to pay $46.75 for the jeans. 

What is the domain of the step function f(x) = ⌈2x⌉ – 1?

Answers

f(x) is defined for "all real numbers."
Answer:

The domain of the given step function is:

                       The set of all the real numbers.

Step-by-step explanation:

Ceiling function--

The ceiling function also known as the least integer function is the function which takes the largest value of the integer for a non-integer number which lie between the two integers , and gives the integer itself if the number is integer.

and it is given by:

[tex]f(x)=\left \lceil x \right \rceil[/tex]

(

For example--

if x= 0.5

then f(x)=1  since x lie between 0 and 1

if x= -2.5

Then f(x)= -2

since x lie between -3 and -2.

if x=3

then f(x)=3  )

Also, the function is defined for all real values of x.

i.e. The domain of such a function is: All real numbers.

The function f(x) is given by:

[tex]f(x)=\left \lceil 2x \right \rceil-1[/tex]

Hence, the domain is all the real numbers.

The circle shown here has area πr2. If its radius is tripled in length its new area will be

Answers

[tex]\bf \textit{area of a circle}\\\\ A=\boxed{\pi r^2}~~ \begin{cases} r=radius\\ -----\\ r=\stackrel{tripled}{3r} \end{cases}\implies A=\pi (3r)^2\implies A=\pi (3^2r^2) \\\\\\ A=9\boxed{\pi r^2}\impliedby \textit{9 times the original area}[/tex]

if you throw a rubber ball toward the ground at an angle, it will bounce up feom the ground at the same angle. find the unknown angle measure in the drawing at the right.

Answers

30°

A strait line is 180°
75°+75°=150°
180°-150°=30°

look at clock blair arrived a the bus stop at 45 minutes ago what time did blaire arive at the bus stop?

Answers

she arrived at 1:30 p.m

If w = <3.5, -6> and z = <-1.5, -4>, what is the resulting vector for 2w − z?

Answers

We have the following vectors:
 w = <3.5, -6>
 z = <-1.5, -4>
 We want to find:
 2w - z
 Substituting we have:
 2w - z = 2 (<3.5, -6>) - (<-1.5, -4>)
 Rewriting we have:
 <7, -12> + <1.5, 4>
 Adding component to component:
 <(7 + 1.5), (-12 + 4)>
 <8.5, -8>
 Answer:
 The resulting vector is:
 <8.5, -8>

Answer:

C. <8.5, -8>

Step-by-step explanation:

for PLATO users

find the surface area of the solid formed by the net

Answers

The net appears to describe a cylinder with diameter 8.46 ft and height 17.25 ft. The total surface area is the sum of the areas of the circles and the rectangle.

The area of a circle with diameter d is given by
  A = (π/4)d²
The area of the rectangle is the product of its length (πd) and width (h).
  A = πdh
So, the total area is the sum of the areas of 2 circles and the rectangle:
  A = 2(π/4)d² +πdh
  A = πd(d/2 +h)
  A = π(8.46 ft)(4.23 ft +17.25 ft) = 181.7208π ft²
  A ≈ 570.89 ft²

The surface area of the cylinder formed by the net is about 570.89 ft².

To date, Ty has cumulative earnings of $107,600. This week he is paid $3,000. What's the total amount of social security tax for this week? Assume a rate of 6.2% on $110,100 for social security and 1.45% for Medicare.

A. $186.00
B. $155.00
C. $180.00
D. $57.66

Answers

Final answer:

The total Social Security tax for Ty's earnings this week, given his total earnings are now $110,600, is $155.00. This calculation considers the Social Security tax rate of 6.2% up to the income threshold of $110,100. Thus, option B is correct.

Explanation:

The question involves calculating the Social Security tax for Ty's earnings this week. With cumulative earnings to date at $107,600 and an additional $3,000 this week, Ty's total earnings for the year are now $110,600.

Since the Social Security tax rate is 6.2% and applies only up to an income of $110,100, we will only apply the tax rate to the $110,100 threshold, not the full $110,600. The week's Social Security tax is then:

0.062 × $110,100 = $6,826.20 (for the entire year so far)

Since we only need to find out the tax for this week's earnings, we need to calculate the tax that was already paid on the first $107,600:

0.062 × $107,600 = $6,671.20

The additional Social Security tax for this week is the difference between the two:

$6,826.20 - $6,671.20 = $155.00

Therefore, the total Social Security tax for this week is $155.00, which corresponds to option B.

The total amount of Social Security tax for Ty this week is $155.00. Hence, the correct option is B.

To calculate the total amount of Social Security tax for Ty this week, we must apply the 6.2% rate to his weekly pay of $3,000. However, since his cumulative earnings to date are $107,600 and the Social Security tax applies only up to $110,100, we need to determine how much of his $3,000 weekly salary is subject to this tax.

To find this, we subtract his current earnings from the maximum amount that is subject to Social Security tax: $110,100 - $107,600 = $2,500. Only $2,500 of Ty's $3,000 salary is taxable for Social Security purposes since he has reached the threshold beyond which Social Security tax is not levied on additional income.

Therefore, this week's Social Security tax is 6.2% of $2,500, which equals $155.00. As the rate for Medicare does not cap, the full $3,000 is subject to the Medicare tax at a rate of 1.45%, leading to a Medicare tax amount of $43.50. However, as the question only asks for the Social Security tax, the answer is B. $155.00.

A map has the scale 2 centimeters = 1 kilometer. on a map, the area of a forest preserve is 3.8 square centimeters. what is the area of the actual forest preserve

Answers

we know that
the scale is 2 cm/1 km
on a map, the area of a forest preserve is 3.8 cm²
assuming it has a square shape
the length side of the square is √3.8 cm
so
if 2 cm on a map-----------------> is a 1 km in the actual
 √3.8 cm------------------------> x
x=√3.8/2 km

the area of the actual forest preserve is
(√3.8/2)*(√3.8/2)----> 3.8/4---> 0.95 km²

the answer is
0.95 km²
Final answer:

To find the actual area of the forest preserve, the map area of 3.8 cm² is multiplied by the scale ratio squared (0.25 km²/cm²), resulting in an actual area of 0.95 km².

Explanation:

The area of the actual forest preserve can be calculated by using the scale given, which is 2 centimeters = 1 kilometer. First, we need to convert the area on the map into the actual area using this scale. Since the scale is linear and the area is measured in square units, we need to square the scale ratio to convert the area on the map to the actual area.

To do this conversion we consider that the scale of 2 cm : 1 km means that every 1 cm on the map is equivalent to 0.5 km (since 2 cm is 1 km). Therefore, for the area, we get the following ratio: (1 cm² = 0.5 km) × (1 cm² = 0.5 km), which simplifies to 1 cm² = 0.25 km². Now, we can find the actual area of the forest preserve by multiplying the 3.8 cm² area on the map by the value of each square centimeter in real-life units, which is 0.25 km².

Actual area = Map area × Scale ratio squared
= 3.8 cm² × 0.25 km²/cm²
= 0.95 km².

Therefore, the forest preserve has an actual area of 0.95 square kilometers.

hey can you please help me posted picture of question

Answers

From the graph we can observe that G(x) is obtained by shifting F(x) 3 units to the left and 1 unit upwards.

Thus, both horizontal and vertical translations are involved. Horizontal translation of 3 units to left can be obtained by adding 3 to x in the equation and vertical translation of 1 can be obtained by adding 1 to the entire function.

So,

G(x) = F(x+3) + 1

G(x) = (x+3)² + 1

Thus the correct answer is option C

# 12 Q please find the volume

Answers

The answer is 1256.0 cm^3
The can of soup is a cylinder.
To find the area of a cylinder, the formula is [tex] \pi [/tex] x r^2 x h
Plug in the given into the formula.

The answer  to your question would be 1256.0 cm^3


The can of soup is a cylinder.
Area of cylinder = the formula is  x r^2 x h

Substitute all the given and it will give you the answer of 1256.0 cm^3.

What is the sum of the numbers in the series below? 15 + 11 + 7 + . . . + (–129)

Answers

your answer if you are in algebra 2 and you have this on online school would be -2,109
Final answer:

The sum of the numbers in the series is -8208.

Explanation:

The sum of a series can be found using the formula for the sum of an arithmetic series, which is given by:

Sum = (n/2)(first term + last term),

where n is the number of terms and the first and last terms are provided in the series. In this case, the first term is 15 and the last term is -129. The common difference between each term is -4.

Using the formula, we have:

Sum = ([-129 - 15]/2)(15 + -129) = (-144/2)(-114) = 72 * -114 = -8208.

Therefore, the sum of the numbers in the series is -8208.

HOW CAN YOU WRITE THE EQUATION OF A LINE THAT IS PARALLEL AND/OR PERPENDICULAR TO ANOTHER LINE USING A POINT ON THAT LINE.?

Answers

The point-slope equation of a line is useful for this purpose. It is often seen in the form
  y -k = m(x -h)
for a line of slope m through the point (h, k).

You can add k to this equation to put it in a form more like slope-intercept form:
  y = m(x -h) +k

Either of these can be used to write the equation of a parallel or perpendicular line through the point (h, k). The slope "m" of a parallel line will match that of the given line.

The slope "m" of a perpendicular line will be the negative reciprocal of the slope of the given line. That is, if you are given a line with slope "s", the slope of the perpendicular line will be m = -1/s.

For the data set below, compute the standard deviation. Round to the nearest hundredth. 2, 3, 5, 8 2.03 2.20 2.6 4.5

Answers

Final answer:

To calculate the standard deviation, compute the mean, subtract it from each data point, square the results, average those and take the square root. Round to the nearest hundredth, and for one standard deviation below the mean, subtract the standard deviation from the mean.

Explanation:

To calculate the standard deviation of a data set, you can use a calculator or a computer. The formula for standard deviation is the square root of the variance, which is the average of the squared differences between each data point and the mean of the data set. Let's compute the mean and standard deviation of the provided data set: 2, 3, 5, 8, 2.03, 2.20, 2.6, 4.5.

Calculate the mean (average) of the data.Subtract the mean from each data point and square the result.Find the average of these squared differences.Take the square root of this average to get the standard deviation.

You may round the standard deviation to the nearest hundredth as requested.

To find the value that is one standard deviation below the mean, subtract the standard deviation from the mean.

Find the slope and y-intercept fotv

Answers

The line rises 2 units for each 3 it goes horizontally.
  Slope: 2/3

The line crosses the y-axis at y=0.
  y-intercept: 0

A car rental agency charges $50 per week plus $0.50 per mile to rent a car. What is the weekly cost to rent the car, f, as a function of the number of miles driven during the week, x. How many miles did you drive during the week if the weekly cost to rent the car was $100?

Answers

A) The cost in dollars is given as 50 + 0.50x, so ...
  f(x) = 0.50x +50

B) You want to find x for f(x) = 100. Substitute the given numbers and solve for x.
  100 = 0.50x +50
  50 = 0.50x
  50/0.50 = x
  100 = x
You drove 100 miles during the week if the cost was $100.
Final answer:

The weekly cost to rent the car, f, as a function of the number of miles driven during the week, x, is f = 50 + 0.50x. If the weekly cost to rent the car was $100, the number of miles driven during the week is 200 miles.

Explanation:

The weekly cost to rent the car, f, as a function of the number of miles driven during the week, x, can be calculated using the formula f = 50 + 0.50x. This is because the car rental agency charges $50 per week plus $0.50 per mile. To find the number of miles driven during the week if the weekly cost to rent the car was $100, we can substitute f = 100 into the formula and solve for x:

100 = 50 + 0.50x

50 = 0.50x

x = 100/0.50

x = 200

Therefore, the number of miles driven during the week is 200 miles.

Learn more about Calculating weekly cost and miles driven here:

https://brainly.com/question/34287171

#SPJ3

hey can you please help me posted picture of question

Answers

All the statements are true except the 1st one.

The parent absolute function is y = |x| and its has only one x-intercept which occurs at x = 0

The rest statements are true. As x value gets closer to 0, the y values also gets closer to zero.

So, correct statements are options 2,3,4  

The length of the shorter base in an isosceles trapezoid is 4 in, its altitude is 5 in, and the measure of one of its obtuse angles is 135°. Find the area of the trapezoid.

Answers

The answer is 45.

Ask me if you still don't understand it because I didn't write any explanation.

Answer:

45

Step-by-step explanation:

The sum of first three terms of a finite geometric series is -7/10 and their product is -1/125. [Hint: Use a/r, a, and ar to represent the first three terms, respectively.] The three number are __, __, and __

Answers

ooh, fun

geometric sequences can be represented as
[tex]a_n=a(r)^{n-1}[/tex]
so the first 3 terms are
[tex]a_1=a[/tex]
[tex]a_2=a(r)[/tex]
[tex]a_2=a(r)^2[/tex]

the sum is -7/10
[tex]\frac{-7}{10}=a+ar+ar^2[/tex]
and their product is -1/125
[tex]\frac{-1}{125}=(a)(ar)(ar^2)=a^3r^3=(ar)^3[/tex]

from the 2nd equation we can take the cube root of both sides to get
[tex]\frac{-1}{5}=ar[/tex]
note that a=ar/r and ar²=(ar)r
so now rewrite 1st equation as
[tex]\frac{-7}{10}=\frac{ar}{r}+ar+(ar)r[/tex]
subsituting -1/5 for ar
[tex]\frac{-7}{10}=\frac{\frac{-1}{5}}{r}+\frac{-1}{5}+(\frac{-1}{5})r[/tex]
which simplifies to
[tex]\frac{-7}{10}=\frac{-1}{5r}+\frac{-1}{5}+\frac{-r}{5}[/tex]
multiply both sides by 10r
-7r=-2-2r-2r²
add (2r²+2r+2) to both sides
2r²-5r+2=0
solve using quadratic formula
for [tex]ax^2+bx+c=0[/tex]
[tex]x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}[/tex]
so
for 2r²-5r+2=0
a=2
b=-5
c=2

[tex]r=\frac{-(-5) \pm \sqrt{(-5)^2-4(2)(2)}}{2(2)}[/tex]
[tex]r=\frac{5 \pm \sqrt{25-16}}{4}[/tex]
[tex]r=\frac{5 \pm \sqrt{9}}{4}[/tex]
[tex]r=\frac{5 \pm 3}{4}[/tex]
so
[tex]r=\frac{5+3}{4}=\frac{8}{4}=2[/tex] or [tex]r=\frac{5-3}{4}=\frac{2}{4}=\frac{1}{2}[/tex]

use them to solve for the value of a
[tex]\frac{-1}{5}=ar[/tex]
[tex]\frac{-1}{5r}=a[/tex]
try for r=2 and 1/2
[tex] a=\frac{-1}{10}[/tex] or [tex]a=\frac{-2}{5}[/tex]


test each
for a=-1/10 and r=2
a+ar+ar²=[tex]\frac{-1}{10}+\frac{-2}{10}+\frac{-4}{10}=\frac{-7}{10}[/tex]
it works

for a=-2/5 and r=1/2
a+ar+ar²=[tex]\frac{-2}{5}+\frac{-1}{5}+\frac{-1}{10}=\frac{-7}{10}[/tex]
it works


both have the same terms but one is simplified

the 3 numbers are [tex]\frac{-2}{5}[/tex], [tex]\frac{-1}{5}[/tex], and [tex]\frac{-1}{10}[/tex]

Answer:

2r²-5r+2=0

a=2

b=-5

c=2

Step-by-step explanation:

   

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