Solve the system y = -x + 7 and y = 0.5(x - 3)^2

Answer:The surface area would be 1809.56units

Step-by-step explanation:

Answer:

576 pi units^2

Step-by-step explanation

I got it wrong and I'm giving you all the answer :)

Answer:

x=3,2,-1,-4

Step-by-step explanation:

The roots (zeros) are the x

values where the graph intersects the x-axis. To find the roots (zeros), replace y with 0 and solve for x

Answer:

A.

Step-by-step explanation:

The equation was solved step by step to find that Roman initially had $20.

Roman has a certain amount of money. If he spends $15, then he has 1/4 of the original amount left. To find out how much money Roman had originally, we can set up an equation. Let's call the original amount of money x. After spending $15, Roman has x - 15 dollars left, which we are told is 1/4 of the original amount, x.

So, the equation we can write is:
x - 15 = 1/4 x

To solve for x, we multiply each side of the equation by 4 to get rid of the fraction on the right side:
4(x - 15) = x

Which simplifies to:
4x - 60 = x

Then we subtract x from both sides to get x on one side:
3x - 60 = 0

Now, we add 60 to both sides to solve for x:
3x = 60

Finally, we divide both sides by 3 to find x:
x = 20

Therefore, Roman originally had $20.

Answer:

y - 5 = 3 (x + 1)

Step-by-step explanation:

Start with the pertinent equation of a straight line:  the point-slope form:

y-k = m(x-h), where (h,k) is the given point and m is the given slope.

Then y - 5 = 3(x-(-1) ), or y - 5 = 3 (x + 1).

Answer:  [tex]y-5=3(x+1)[/tex]

Step-by-step explanation:

By definition the equation of the line written in point-slope form is the following:

[tex]y-y_1=m(x-x_1)[/tex]

Where ([tex]x_1,y_1[/tex]) is a point of the line and m is the slope.

You know that the slope is 3 and the ine that passes through (-1, 5).

Then, when you substitute these values into the equation, you obtain:

  [tex]y-5=3(x-(-1))[/tex]

 [tex]y-5=3(x+1)[/tex]

Answer:

Step-by-step explanation:

a² + b² = c²

8² + 7² = c²

64 + 49 = c²

113 = c²

c = √113 = 10.63 units

The length of C for the triangle is 10.63 units

Pythagorean theorem states that in the right angle triangle the hypotenuse square is equal to the square of the sum of the other two sides.

The value of C is calculated by using the Pythagorean theorem.

a² + b² = c²

8² + 7² = c²

64 + 49 = c²

113 = c²

c = √113 = 10.63 units

Therefore, the length of C for the triangle is 10.63 units

To know more about the Pythagorean theorem follow

https://brainly.com/question/343682

#SPJ2

Answer:

405

Step-by-step explanation:

This is a geometric sequence, so we need the common ratio and the first term

To find the common ratio, we take the second term and divide by the first term

15/5 =3

The common ratio is 3

We are multiplying by 3 each time

The first term is 5

The formula is

an = a1 * (r) ^ (n-1)  where n is the term number

We want the 5th term

a5 = 5 * (3) ^ (5-1)

a5 = 5 *3^4

    = 5 *81

    = 405

The fifth term is 405.

[tex]a_{n}[/tex] = [tex]a_{1}[/tex]* [tex]r^{n-1}[/tex]

In this formula,[tex]a_{1}[/tex] is the first term,

r is the common ratio, and

n is the term number.

From the given sequence 5, 15, 45,..., we can identify the following:

[tex]a_{1}[/tex] = 5

r = 15 / 5 = 3 (common ratio)

Now, we need to find the fifth term (n = 5):

[tex]a_{5}[/tex] = 5 * [tex]3^{5-1}[/tex]

  = 5 * [tex]3^{4}[/tex]

  = 5 * 81

  = 405

So, the fifth term of the geometric sequence is 405.

Answer:

Step-by-step explanation:

1 + 6 = 7

2 + 5 = 7

3 + 4 = 7

4 + 3 = 7

2 + 5 = 7

1 + 6 = 7

6 + 5 = 11

5 + 6 = 11

8 / 36 = 4 / 18 = 2 / 9

There are many ways to write a transformation.

This shows the translation as a function.

f(x) = y = | x |

f(x-11)

This shows the translation as a column vector.

[tex]\left[\begin{array}{ccc}-11\\0\end{array}\right][/tex]

Answer:

121°

Step-by-step explanation:

Therefore; ∠ x = 1/2 mABC

Thus; 360° - 118° = 242°

Using the formula; ∠ x = 1/2 mABC

Then; d = 242/2

            = 121°

Answer:

Answer is. >

√85 > 8.9860

Step-by-step explanation:

√85 > 8.9860

This means that √85 is greater than 8.9860

This is because;

√85 = 9.2195...

9.2195.. is greater than 8.9860..

Answer:

>

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Since a function would mean that a customer is able to purchase 1.1 of an item or 1.5 of an item, which is false. It also means that the customers pay the same price for a different amount of items.

Answer: The answer is A

It is a function because the input can be either 1 or 2 items, but the output will always be the same price.

According to the stated relation, (# sale items purchased, price), the input is the number of sale items purchased and the output is the price. The input values of a function can be different and have the same output value. However, a function cannot have different outputs for the same input.

It will take her 14 weeks to save up $162 dollars.

You need to do 162÷12 to do this. Although 162÷12 is 13.5, you have to round up, getting you the 14 weeks.

Answer:

A. c=1, d=3

Step-by-step explanation:

If x>0 and y>0, then

[tex]\sqrt{\dfrac{50x^6y^3}{9x^8}}=\sqrt{\dfrac{25\cdot 2y^2\cdot y}{9x^2}}=\dfrac{5y\sqrt{2y}}{3x}.[/tex]

If

[tex]\dfrac{5y\sqrt{2y}}{3x}[/tex]

is equal to

[tex]\dfrac{5y^c\sqrt{2y}}{dx},[/tex]

then

[tex]y=y^c\Rightarrow c=1,\\ \\3x=dx\Rightarrow d=3.[/tex]

D=x

E=(4/5)•x

F=E+38

F=(4/5)•x+38

G=F-5

G=(4/5)x+38-5

G=(4/5)x+33. ⟨——answer for A

64.5=[d+e+f+g]/4

64.5=[5x/5+4x/5+4x/5+38+4x/5+33]/4

4•64.5=9x/5+8x/5+71

258=17x/5+71

258-17=17x/5

241=17x/5

5•241=17x

1205/17=x

70.88=x

G=(4/5)x+33

G=(4/5)(70.88)+33

G=89.7 ⟨——answer to part B

Gabriel's marks in terms of x is (G = 4x/5 + 38) and if the average mark of the four boys is 64.5 then Gabriel's marks for the Mathematics test is 89.7.

Given :

Score of David in the mathematics test is given by:

D = x

Score of Edwin in the mathematics test is given by:

[tex]\rm E = \dfrac{4}{5}x[/tex]

Score of Frank in the mathematics test is given by:

[tex]\rm F = \dfrac{4}{5}x + 38[/tex]

Score of Gabriel in the mathematics test is given by:

G = F - 5    ---- (1)

a) Now, substitute the value of F in the equation (1)

[tex]\rm G = \dfrac{4x}{5}+38-5[/tex]

[tex]\rm G = \dfrac{4x}{5}+33[/tex]

b) Given that the average mark of the four boys is 64.5 that is:

[tex]\rm \dfrac{G+F+E+D}{4}=64.5[/tex]

Now, substitute the values of G, F, E, and D in the above equation. After simplifying the expression:

[tex]258=\dfrac{17x}{5}+17[/tex]

Further, simplify the above expression it becomes:

x = 70.88

So, Gabriel's marks for the Mathematics test is:

[tex]\rm G = \dfrac{4\times 70.88}{5}+33[/tex]

G = 89.7

For more information, refer to the link given below:

https://brainly.com/question/15385899

Final answer:

Min's hose will fill up 14 gallons of water if it runs for 2/3 of an hour, based on its rate of 21 gallons per hour.

Explanation:

The question asks us to calculate how many gallons of water Min's hose can pump if it runs for 2/3 of an hour, given that it pumps water at a rate of 21 gallons per hour.

First, we need to find out how much water the hose would pump in one hour and then calculate 2/3 of that amount:

Full capacity in one hour: 21 gallons

Capacity in 2/3 of an hour: (21 gallons) * (2/3) = 14 gallons

So, Min's hose will fill up 14 gallons of water if it runs for 2/3 of an hour.

Answer:

[tex]\textsf{A)}\;\;\; -2, \; \left|-\dfrac{4}{5}\right|, \; |-1|, \;|3.5|, \;|-4.2|[/tex]

[tex]\newline[/tex]

Step-by-step explanation:

[tex]\newline[/tex]

Given numbers:

[tex]\newline[/tex]

[tex]|-4.2|, \;\left|-\dfrac{4}{5}\right|, \; |-1|, \;-2, \; |3.5|[/tex]

[tex]\newline[/tex]

The absolute value of a number represents the distance of a number from zero on the number line, regardless of direction. This means that the absolute value of a number is always non-negative. For example, |-4.2| = 4.2, because the distance from -4.2 to 0 is 4.2 units.

[tex]\newline[/tex]

Evaluate each term:

[tex]\newline[/tex]

[tex]|-4.2|=4.2[/tex]

[tex]\left|-\dfrac{4}{5}\right|=\dfrac{4}{5}=0.8[/tex]

[tex]|-1|=1[/tex]

[tex]-2=-2[/tex]

[tex]|3.5|=3.5[/tex]

[tex]\newline[/tex]

Now, arrange them from least to greatest:

[tex]\newline[/tex]

[tex]-2, \;0.8, \;1, \;3.5, \;4.2[/tex]

[tex]\newline[/tex]

Therefore, the list of numbers in the correct order from least to greatest is:

[tex]\newline[/tex]

[tex]\large\boxed{-2, \; \left|-\dfrac{4}{5}\right|, \; |-1|, \;|3.5|, \;|-4.2|}[/tex]

Answer:

a=-b? That might be wrong, sorry. But that's what it sounds like.

Step-by-step explanation:

The equation that represents the direct variation between the numbers a and b is b = -a.

The equation that represents the direct variation between the numbers a and b is given by b = -a. In direct variation, when one variable increases, the other variable also increases, but in this case, they increase in opposite directions. For example, when a = -2, b = 2, and when a = 2, b = -2. Therefore, b varies directly with a, but in the opposite direction.

https://brainly.com/question/1449231

#SPJ3

Answer:

The third one is the one I would choose

Hope this helped :)

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

([tex]\frac{f}{g}[/tex])(x)

= [tex]\frac{3x+5}{3x^2-x-10}[/tex] ← factor denominator

= [tex]\frac{3x+5}{(x-2)(3x+5)}[/tex] ← cancel (3x + 5), leaving

= [tex]\frac{1}{x-2}[/tex]

The denominator cannot be zero as this would make the fraction undefined. Equating the denominator to zero and solving gives the value that x cannot be.

solve x - 2 = 0 ⇒ x = 2 ← excluded value

domain is the set of all real numbers except 2

Answer:

A(7,5)

Step-by-step explanation:

This is correct because the area of a triangle is b × h = a.

Answer:

The measure of ∠ABC  is 45°.

Step-by-step explanation:

Given : The vertices of a triangle are A(7,5) B(4,2) and C(9,2).

To find : What is ∠ABC ?

Solution :

First we side the length of the sides,

Using Distance formula,

[tex]d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}[/tex]

Length of side AB, A(7,5) and B(4,2)

[tex]c= \sqrt{(7-4)^2 + (5-2)^2} \\c= \sqrt{(3)^2 + (3)^2} \\c= \sqrt{9+9} \\c= \sqrt{18}[/tex]

Length of side BC, B(4,2) and C(9,2)

[tex]a= \sqrt{(4-9)^2 +(2-2)^2} \\a= \sqrt{(-5)^2 + 0} \\a= \sqrt{25} \\a= 5[/tex]

Length of the side AC, A(7,5) and C(9,2)

[tex]b = \sqrt{(7-9)^2 +(5-2)^2}\\ b= \sqrt{(-2)^2 + (3)^2} \\b= \sqrt{4+ 9}\\b=\sqrt{13}[/tex]

By the Law of Cosines,

[tex]\cos B=\frac{a^2 + c^2 -b^2}{2ac}[/tex]

Substitute the values,

[tex]\cos B=\frac{(5)^2 + (\sqrt{18})^2 - (\sqrt{13})^2}{2\times 5\times \sqrt{18}}[/tex]  

[tex]\cos B =\frac{25+18-13}{10\sqrt{18}}[/tex]  

[tex]\cos B=\frac{30}{10\sqrt{18}}[/tex]  

[tex]\cos B =\frac{3}{\sqrt{18}}[/tex]  

[tex]\cos B= \frac{3}{3\sqrt{2}}[/tex]  

[tex]\cos B= \frac{1}{\sqrt{2}}[/tex]  

Taking Inverse Cosine function,

[tex]B= \cos^{-1}( \frac{1}{\sqrt{2}})[/tex]  

[tex]B=45^\circ[/tex]  

Therefore, The measure of ∠ABC  is 45°.

Answer:

50%

Step-by-step explanation:

Is means equals and of means multiply

4 = P * 8

Divide each side by 8

4/8 = P 8/8

.5 = P

Multiply each side by 100 to change from decimal form to percent form

50% = P

4 is 50% of 8

Answer:

Step-by-step explanation:

[tex]\begin{array}{ccc}\$8&-&100\%\\\\\$4&-&p\%\end{array}\qquad\text{cross multiply}\\\\\\8p=(4)(100)\\8p=400\qquad\text{divide both sides by 8}\\p=50\ (\%)[/tex]

Answer:  [tex]\large{x^{\frac{1}{4}}y^{\frac{1}{2}}}[/tex]

Step-by-step explanation:

[tex]\sqrt[8]{x^2y^4}=x^{\frac{2}{8}}y^{\frac{4}{8}}=\huge\boxed{x^{\frac{1}{4}}y^{\frac{1}{2}}}[/tex]

Answer:

r=8

Step-by-step explanation:

59 =7r+3

Subtract 3 from each side

59 -3 = 7r+3-3

56 = 7r

Divide each side by 7

56/7 = 7r/7

8 =r

Answer:

[tex]\boxed{\bold{r=8}}[/tex]

Step-by-step explanation:

Switch sides

[tex]\bold{7r+3=59}[/tex]

Subtract 3 from both sides

[tex]\bold{7r+3-3=59-3}[/tex]

Simplify

[tex]\bold{7r=56}[/tex]

Divide both sides by 7

[tex]\bold{\frac{7r}{7}=\frac{56}{7}}[/tex]

Simplify

[tex]\bold{r=8}[/tex]

Answer:

ann would have $1700 left for bills or rent food etc

Step-by-step explanation:

Ann's proposed monthly budget takes into account her $2,700 net income and fixes expenses for her dog and new car. After allocating for these expenses, the budget proposes estimated allocations for rent, utilities, groceries, entertainment, and savings, with an emphasis on setting aside roughly 10% for savings as a good financial habit.

To create a reasonable monthly budget for Ann who has a net monthly income of $2,700, we need to allocate funds to her known expenses and then distribute the remaining amount to cover other typical living costs such as rent, utilities, groceries, and savings. Ann has two fixed expenses mentioned: dog-related expenses that cost about $150 every month, and her transportation expenses which are $800 for her new car. Once we subtract these amounts from her monthly income, we can allocate the rest to other necessary expenses.

Here is a proposed monthly budget for Ann:

Net Monthly Income: $2,700

Dog-Related Expenses: -$150

Transportation (Car Expenses): -$800

Rent: -$900 (estimate based on average rent costs)

Utilities: -$150 (estimate including electricity, water, and gas)

Groceries: -$300 (estimate for a single person)

Entertainment: -$100 (for dining out, movies, etc.)

Savings: -$200 (aiming for roughly 10% savings as good financial practice)

Answer: 0.032

Step-by-step explanation: poof

Answer:

21

Step-by-step explanation:

Answer:

[tex]n=-14[/tex]

Step-by-step explanation:

The given expression is

[tex](x^3)(x^{-17})=x^n[/tex]

Recall that; [tex]a^m\times a^n=a^{m+n}[/tex]

We apply this property to the left hand side to obtain;

[tex]x^{3+-17}=x^n[/tex]

This simplifies to;

[tex]x^{3-17}=x^n[/tex]

[tex]x^{-14}=x^n[/tex]

Since the bases are the same; the exponents are also the same.

[tex]\therefore n=-14[/tex]

Answer:

52

Step-by-step explanation:

3.25 pints = 52 fluid ounces since there are 16 fl oz in one pint.

Answer:

–7/2 ≤ x ≤ 5/2

Step-by-step explanation:

Given in the question an inequality

| 2x + 1 | ≤ 5

–5 ≤ 2x + 1 ≤ 5

–6 – 1 ≤ 2x + 1 -1 ≤ 6 – 1

–7 ≤ 2x ≤ 5

–7/2 ≤ x ≤ 5/2

Then the solution to | 2x + 1 | ≤ 5 is the interval –7/2 ≤ x ≤ 5/2

Graph is attach below

The solution to the absolute value inequality |2x + 1| ≤ 5 is the interval -3 ≤ x ≤ 2. To find this, two separate inequalities are solved based on the non-negative and negative cases within the absolute value. The graphical representation is a closed interval from -3 to 2 on the number line.

To solve and graph the absolute value inequality |2x + 1| ≤ 5, we need to consider two cases based on the definition of absolute value.

We then solve these two inequalities:

The solution set is the intersection of these two sets of numbers, which is -3 ≤ x ≤ 2. Graphically, this is represented on the number line as a closed interval from -3 to 2.

The question deals with the distribution of students' residences relative to their school. Calculations suggest 22% live between 1 and 2 miles away, 10% live between 2 to 3 miles away, and the remaining students live more than 3 miles away from the school.

The question relates to the distribution of students' residences in relation to the school. Given that, at one school, half of the students live within 1 mile, 78% live within 2 miles, and 0.1 of the students live between 2 and 3 miles from the school. This implies that 22% of students live between 1 and 2 miles of the school (the difference between 78% and the half who live within 1 mile), and 0.1 of the students live further than 2 miles but less than 3 miles from the school. So, the remaining students, which is 100% minus (half + 22% + 0.1*100%), live more than 3 miles away from the school.

https://brainly.com/question/34212393

#SPJ12

To find the probability that a randomly chosen student at the local community college lives within five miles of the campus or receives some kind of financial aid, the formula for the union of two events can be used. Substituting the given probabilities, the probability is found to be 0.35.

To find the probability that a randomly chosen student at the local community college lives within five miles of the campus or receives some kind of financial aid, we need to understand the given information.

We know that 20% of the students live within five miles of the campus and 30% receive financial aid. Of those who live within five miles, 75% receive financial aid.

To find the probability, we can use the formula for the union of two events:

P(A or B) = P(A) + P(B) - P(A and B)

In this case, A represents living within five miles of the campus and B represents receiving financial aid. Substituting the given probabilities, we have:

P(lives within five miles or receives financial aid) = 0.20 + 0.30 - (0.20 * 0.75)

P(lives within five miles or receives financial aid) = 0.20 + 0.30 - 0.15

P(lives within five miles or receives financial aid) = 0.35

https://brainly.com/question/32117953

#SPJ2