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Answer:

The cost of a card is 4 dollars

The cost of a baseball is 18 dollars

Step-by-step explanation:

13c + 9b = 214

 3c + 8b = 156

(13c + 9b = 214) × -8

( 3c + 8b = 156) × 9

-104c - 72b = -1712

  27c + 72b = 1404

-------------------------------

-77c = -308

÷-77      ÷-77

--------------------

c = 4

3c + 8b = 156

3(4) + 8b = 156

12 + 8b = 156

-12             -12

----------------------

8b = 144

÷8     ÷8

------------------

b = 18

I hope this helps!

The given expression (−2)3 x 30 x (−4)(−20) will have the value as -14400

In the above question, the following mathematical expression is given :

(−2)3 x 30 x (−4)(−20)

We need to find the value of the given expression by solving it using the BODMAS rule

According to the rule, first we'll solve the multiplication then subtraction

Therefore, we get

(−2)3 x 30 x (−4)(−20)

(-6) x 30 x (-)(-)80

We know, that (-) x (-) = +

and (-) x (+) = (-)

Therefore, we get

(-6) x 30 x (-)(-)80

(-6) x 30 x 80

-6 x 2400

- 14400

Hence, the given expression (−2)3 x 30 x (−4)(−20) will have the value as -14400

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Answer:

5z² + 35z - 90 = 0

5(z² + 7z - 18) = 0

z² + 7z - 18 = 0

(z - 2)(z + 9) = 0

r=−9, s=2

STEPS USING THE DIRECT FACTORING METHOD

5z²+35z−90

This quadratic equation can be resolved using a revolutionary direct factoring technique that does not rely on guesswork. The equation must have the form x2+Bx+C=0 to be solved using the direct factoring approach. To do this, multiply both sides of the equation by 5.

x²+7x−18=0

Let r and s be the factors for the quadratic equation such that x²+Bx+C=(x−r)(x−s) where the sum of factors (r+s)=−B and the product of factors rs=C

r+s=−7

rs=−18

When the average of the two integers is 1/2*-7=-7 /2, the sum of the two numbers r and s are exactly 7. You can also observe that the parabola symbolized by the quadratic equation y=x2+Bx+C has its axis of symmetry in the middle of r and s. An unknown quantity u separates the values of r and s from the center at an equal distance. Describe r and s about the variable u.

r=−7​/2−u

s=−7​/2+u

Put these in the product equation rs=-18 to solve for the unknown quantity u.

(−27​−u)(−27​+u)=−18

Simplify by expanding (a−b)(a+b)=a2–b2

49​/4−u²=−18

Simplify the expression by subtracting 49/4 on both sides

−u2=−18−49​/4=−121​/4

To find the value of the unknowable variable u, simplify the expression by multiplying by 1 on both sides and taking the square root.

u2=121/4

u=±√121/4=±11/2

The factors r and s are the solutions to the quadratic equation. Substitute the value of u to compute the r and s.

r=−7/2−11​/2=−9

s=−7​/2+11​/2=2

Therefore, r=−9, s=2

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The equation that calculates the total pay of Madeline when she sells 'x' number of computers is "P = 20x + 80".

So, the equation for P will be:

Now, the equation can be:

(Refer the table attached below)

Therefore, the equation that calculates the total pay of Madeline when she sells 'x' number of computers is "P = 20x + 80".

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Solution:

Given the graph;

(a) The domain of a function is the set of values for which the function is real and defined. Thus, the domain D is;

The range is;

The zeros of the function are the points y=0;

(b) The equation of a parabola in vertex form is;

Thus, the equation is;

(c) Using the graph below;

The graph of g(x) has its intercept at (0,0).

The transformation goes as;

Vertical stretch 2units, reflection over the x-axis, horizontal shift to the the right 3 units, vertical shift up 8 units

Using (5,0);

Answer:

12

Step-by-step explanation:

Alicia has 3 sisters.

Connor has twice as many sisters.

Twice means "two times".

Connor has 2×3, that is 6 sisters.

Carly has twice (two times) as many sisters as Connor.

Carly has 2×6, or 12 sisters.

Answer:

-6/5

Step-by-step explanation:

[tex]5x-6y=30 \\ \\ 6y-5x=-30 \\ \\ 6y=5x-30 \\ \\ y=\frac{5}{6}x-5[/tex]

Perpendicular lines have negative reciprocal slopes, so the answer is -6/5.

The given data  is incorrect, k does not constitute a constant, but rather y does not varies directly to x.

We may have 11=7k for the initial point, implying that k=11/7.

Again for second point, we'd have 13=8k, which means k=13/8.

Using proportions, we can see that 11/7 doesn't really equal 13/8: cross multiply and you get 11*8=7*13, or 88=91.

Thus, this is incorrect, k does not constitute a constant, but rather y does not varies directly to x.

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The complete question is-

Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

x y

7 11

8 13

9 15

10 17

The scientific notation is [tex]5.72 * 10^{6}[/tex]

Factor out 1 of the powers of 10

[tex]= (5.5 * 10^{6}/10^{6} + 2.2 * 10^{5}/10^{6}) * 10^{6}[/tex]

Perform division of exponents:

[tex](5.5 * 10^{0} + 2.2 * 10^{-1}) * 10^{6}[/tex]

Convert Scientific notations to real numbers:

[tex]= (5.5 + 0.22) * 10^{6}[/tex]

Combine real numbers:

[tex]= (5.72) * (10^{6})[/tex]

Convert to proper Scientific notations:

[tex]= 5.72 * 10^{6}[/tex]

Manually check answer

= (5.5 x 1000000) + (2.2 x 100000)

= 5500000 + 220000

= 5720000

[tex]= 5.72 * 10^{6}[/tex]

What are Scientific notations?

Scientific notation is a way to display extremely big or extremely small numbers in a more understandable way. We are aware that full numbers can go on forever, but we are unable to write such enormous figures on paper. Additionally, a simpler method of representation was required for the numbers that appear at the millions place following the decimal. This makes it challenging to express a small number of integers in their enlarged form. We thus employ scientific notations. Learn general forms for numbers as well.

Rules for Scientific Notation

We must adhere to the following rule in order to calculate the power or exponent of 10:

The base must always be 10.

Exponents that are non-zero integers must be either positive or negative in order to be used.

The coefficient's absolute value is more than or equal to 1, but it must be less than 10.

Positive and negative numbers, including whole and decimal values, can be coefficients.

The remaining significant digits of the number are represented by the mantissa.

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Answer:

[tex]y=x-5[/tex]

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{4.4cm}\underline{Slope Formula}\\\\Slope $(m)=\dfrac{y_2-y_1}{x_2-x_1}$\\\\where $(x_1,y_1)$ and $(x_2,y_2)$ \\are two points on the line.\\\end{minipage}}[/tex]

Given points:

Substitute the given points into the slope formula to find the slope of the line:

[tex]\implies m=\dfrac{-2-(-1)}{3-4}=\dfrac{-1}{-1}=1[/tex]

[tex]\boxed{\begin{minipage}{5cm}\underline{Point-slope Formula}\\\\$y-y_1=m(x-x_1)$\\\\where $m$ is the slope and\\ $(x_1,y_1)$ is a point on the line.\\\end{minipage}}[/tex]

Substitute the found slope and the point (4, -1) into the point-slope formula to create the equation of the line:

[tex]\implies y-(-1)=1(x-4)[/tex]

[tex]\implies y+1=x-4[/tex]

[tex]\implies y+1-1=x-4-1[/tex]

[tex]\implies y=x-5[/tex]

Answer:

(0,8)

Step-by-step explanation:

What is needed in order to be a function?

A value of x cannot have more than one value of y. In this question, we have that for x = 0, there are 2 values of y: -2 and 8. So one of those can be removed.

Among the options, we have: (0,8), which is the correct answer

The term in the AP whose value is 201 / 2 is 71.3.

The first term of an arithmetic progression is 5 and the common difference is - 3/2.

The formula of the arithmetic progression can be described as follows:

nth term = a + (n - 1)d

where

Therefore, using the arithmetic progression formula,

a = 5

d = 3 / 2

nth term = 201 / 2

let's find the term(n)

Therefore,

- 201 / 2 = 5 + (n - 1) - 3 / 2

- 201 / 2 = 5  - 3 / 2 n  + 3 / 2

- 201 / 2  - 3 / 2 - 5 =  - 3 / 2 n

- 107  =  -3 / 2 n

-3n = - 214

n = 214 / 3

n = 71.3

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The number of red beads obtained from the jar is 12 beads.

The number of red beads that can be obtained from the jar is the ratio of red beads to the total number of beads multiplied by the total number of beads picked at random.

 Number of red beads obtained = (number of red beads / total number of beads) x number of beads picked

Total number of beads = 65 + 154 + 70 = 289

Number of red beads obtained = (65 / 289) x 54 = 12.14 ≈ 12 beads

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Answer:

Explanation:

Let x represent unknown side length

We can go ahead and find x using the Pythagorean Theorem as seen below;

Let's find sin A as seen below;

Let's find cos A as seen below;

Let's find sin B as seen below;

Let's find cos B as seen below;

Answer:

the anser is 1.09

Step-by-step explanation:

9.81 divided by 9 = 1.09

3/5 of the T-shirts of the shop are on sale

5/8 of those on sale are blue

1/3 of the blue shirts on sale are medium size.

First calculate how many of the shirts on sale are blue:

25/24 of the shirts on sale are blue

Then divide that number by three to know how many are medium size:

25/72 are blue and medium size

Answer:

hey bro listen

Step-by-step explanation:

you can't always

get the answers

here try to

do yourself and

see your potential.

To simplify 3y-5y+10y-4y​, just add and subtract the coefficients of each term. That is, 3 - 5 + 10 - 4 = 4, which means that the final expression is 4y.

Answer: The triangle is not possible.

Step-by-step explanation:

1) Find the missing angle

62+59+x=180

x=59

2) Use the Law of Sine to check if the triangle sides are the same.

The Law of sine means that Sine the angle and divide with the side across it will equal to same.

[tex]\frac{sin(x)}{x} =\frac{sin(y)}{y}[/tex]

Substitute the numbers.

[tex]\frac{sin(59)}{10} =\frac{sin(62)}{10}[/tex]

0.0636 = -0.0739

3) Solve

Since the decimals aren't the same, the triangle is not possible.

Solution:

Given:

When the cardboard is folded to become a box (cuboid), it will have the following dimensions after the cut of squares from each corner;

The volume of a cuboid is given by;

Solve the quadratic equation by factorization;

Hence, the dimension of the original piece of cardboard is;

Therefore, the dimensions of the original piece of cardboard are 26 in by 22in

The given expression is : _( 4t + _ ) = 6t + 15

In the 6t + 15,

Answer:

1/4

Step-by-step explanation:

I'm 95% sure that this is the answer. if im not correct, im sorry for wasting your time having to read all of this, and im sorry i couldnt help.

Lewis uses cubes to represent each term of a pattern based on a recursive function. the recursive function defined is f(n+1)=f(n)+4, where n is an integer and n≥2. the number of cubes used in each of the first two figures is shown below. how many cubes does Lewis need in the third, fourth, and fifth figures of the pattern? fill in the blanks.



figure 1: 9 cubes

figure 2: 13 cubes

figure 3: (blank)

figure 4: (blank)

figure 5: (blank)​

Let

f(0)=5

so

For n=0

f(1)=5+4=9

f(1)=9

For n=1

f(2)=9+4=13

f(2)=13

For n=2

f(3)=13+4=17

For n=3

f(4)=17+4=21

For n=4

f(5)=21+4=25

For n=5

f(6)=25+4=29

therefore

theanswer is

The equation in slope-intercept form that represents the situation is y = 5x + 25.

In 3 weeks Ellie she saved $40 and $60 in 7 weeks.

Let x and y represent the number of weeks and the total amount saved respectively.

The equation of a line in slope intercept form is given as:

y = mx + b where m is the slope and b is the y-intercept.

Now when x = 3, y = $40.

Therefore,

y = mx + b

40 = 3m + b                                                                                 --------------(1)

When x = 7, y = $60

y = mx + b

60 = 7m + b                                                                                 -------------(2)

Subtracting (1) from (2),

7m + b - 3m - b = 60 - 40

4m = 20

m = 5

So,

3m + b = 40

3(5) + b = 40

15 + b = 40

b = 25

Hence, the equation of the line in slope intercept form is y = 5x + 25.

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Explanation

Given the expression

We are asked to find the remainder. We can use the remainder theorem. This can be seen below.

According to this theorem, if we divide a polynomial P(x) by a factor ( x – a); that isn't essentially an element of the polynomial; you will find a smaller polynomial along with a remainder.

All we need to do is to substitute the value of (a) in the numerator to get the remainder. a is represented in the denominator.

Therefore, we will have;

Answer: 577

Step-by-step explanation:

Answer:

577.0      

Rounded to the nearest 0.1 or

the Tenths Place.

Step-by-step explanation:

576.984

You rounded to the nearest tenths place. The 9 in the tenths place rounds up to 10 because the digit to the right in the hundredths place is 8.

Because the tenths place was rounded up from 9 to 10, the tenths place becomes 0 and the ones place is increased by 1. When a 9 is rounded up to 10, that place value becomes 0 and we add 1 to the previous place value.

577.0

When the digit to the right is 5 or greater we round away from 0.

576.984 was rounded up and away from zero to 577.0

Using simple interest, the rate of interest on the amount that Samantha borrowed to buy the law equipment is 11.75%.

A simple interest system does not accumulate (compound) interest on both the principal and interest, unlike compound interest.

The simple interest uses the following formula, Interest = Principal x Rate x Period.

This simple interest formula can be reversed to find either the principal, rate, or period, as the case may be.

The loan amount = $800

Period of loan  = 9 months

Total interest paid = $70.50

Rate of interest = (Interest × 100)/(Principal × Time)

= 11.75% ($70.50 x 100)/($800 x 9/12)

Check:

Interest = $70.50 ($800 x 11.75% x 9/12)

Thus, Samantha's interest rate on the loan is 11.75%.

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We will have the following:

First, we find the slope:

So, the equation that represents the line is:

So:

***Explanation***

We are given the points (-2, 1) & (2. 1).

From this we cans see that the line passes both times through y = 1.

We also know that the slope (m) is given by:

So the slope for this line will be:

Now, we also know that the equation of the line in general form is given by:

So, the equation of the line will be given by:

So the function is a constant value, thus a horizontal line.

***Explanation for the general form of a line***

The general form of a line is given by:

Here "x" & "y" are two variables; "x1" & "y1" are the component of a point that belongs to that lline and "m" is the slope of that line. We remember that (x1, y1) can be any point that belongs to the line.

So, we simply replace the values, in our case I willl solve for (-2, 1), but we could also use (2, 1), the solution at the end will be the same.

So:

The required graph below which represents the given equation of the ellipse is (x +7)²/49 + (y-5)²/25 = 1. Which is the correct answer would be option (C).

An ellipse can be defined as a shape that looks like an oval circle.

The equation of the ellipse is (x +7)²/49 + (y-5)²/25 = 1 which is given in the question.

An asymptote is a line that a curve approaches, but never touches. Find the horizontal, vertical, and oblique asymptotes.

Center of the ellipse : (−7,5)

Vertex 1: (0,5)

Vertex 2: (−14,5)

We have attached the required graph below which represents the given

equation of the ellipse is (x +7)²/49 + (y-5)²/25 = 1.

Hence, the correct answer would be an option (C).

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Answer:

One solution.

Explanation:

Let us try to solve the equation and see how many solutions it has.

The first step in solving the equation is to first simplify both the right-hand and the left-hand sides. This means adding all the like terms.

Next, we add 7 to both sides. This gives

dividing both sides by 3 gives

which is exactly one solution!

Therefore, our equation had one solution.