Please help! I really need help!

Answer:

$8

Step-by-step explanation:

Here is the correct question: Mike bought 20 stamps for 0.40 each and 15 Century 0.32 each how much money did Mike spend on stamp​.

Given: cost of each stamp is 0.40

           Total stamp bought is 20.

Using unitary method

Cost of 1 stamp is 0.40.

∴ cost of 20 stamp is =[tex]20\ stamp \times 0.40= 8[/tex]

Cost of 20 stamp is $8

∴ Total money spent by Mike on buying 20 stamp is $8.

Answer:

Step-by-step explanation:

The product of this expression is option (A) (2√42 + 7√2 - 6 - √21) is the correct answer.

Simplification of an expression is the process of writing an expression in the most efficient and compact form without affecting the value of the original expression. It involves, multiply out the brackets and then simplify the resulting expression by collecting the like terms.

For the given situation,

The expression is [tex](\sqrt{14} -\sqrt{3})( \sqrt{12} +\sqrt{7} )[/tex]

⇒ [tex]\sqrt{14}\sqrt{12} +\sqrt{14} \sqrt{7} -\sqrt{3} \sqrt{12} -\sqrt{3} \sqrt{7}[/tex]

⇒ [tex]\sqrt{168}+\sqrt{98}-\sqrt{36}-\sqrt{21}[/tex]

⇒ [tex]\sqrt{2^{2}(42) } +\sqrt{7^{2}(2) } -\sqrt{6^{2} }-\sqrt{21}[/tex]

⇒ [tex]2\sqrt{42 } +7\sqrt{2 } -6-\sqrt{21}[/tex]

Hence we conclude that the product of this expression is option (A) (2√42 + 7√2 - 6 - √21) is the correct answer.

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The value of y is 28

y = 28

Final answer:

2 × 3 × 4, which equals 24.

Explanation:

To find equivalent expressions, we need to think about numbers that can multiply together to reach 24, while also keeping in mind the properties of operations and exponents.

Answer:

8.83%

Step-by-step explanation:

Using compound interest formula

A = P ( 1+ r) ^t where A = amount = 530 × 36 = $ 19080, P = the amount of the loan = $ 14800, t = 36 / 12 = 3 years

substitute the values into the equation

19080 = 14800 (1 + r) ^3

19080 / 14800 = (1 + r) ^3  

1.2892 = (1 + r) ^3  

∛(1.2892) = 1 + r

1.0884 = 1 + r

r = 1.0884 - 1 = 0.0884 × 100 = 8.83%

Answer:

d 8,5%, the most probable, provided the error in the question is confirmed!!!

Step-by-step explanation:

Mason has an offer to buy an item with a sticker price of P= $14,800.

He is to pay $8530 a month for 36 months.

Total amount paid by Mason will be

$8530*36= $307,080

This will be very outrageous compared to the sticker price!!!

If we presume he is paying yearly 8530 for 36 months or 3 years.

Then total amount paid will be 8530*3 = $25590

Also very high in my opinion.

Perhaps the dollar sign was wrongly typed as '8' in the question and he pays only $530 monthly,

Then the total amount paid will be $19,080

This is quite reasonable.

If the interest rate is compounded for n (n=3, 36 months = 3 years)

years, thus

19080= ((P*(1+i)^n) , meaning

19080 =((14800(1+i)^3), which when evaluated yields

i=8.8%

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

4/7 - (-4/7) = 4/7 + 4/7 = 8/7 or 1 1/7......a negative times a negative is a positive...so those two negatives turn into a positive...so ur basically just adding them

Answer:

the rule is:

75x + 1000

Step-by-step explanation:

after 18 months

plug 18 in for x.

75(18) + 1000

= 1350

1350 + 1000

= 2350

$2350 after 18 months

Answer:

Part (A)  1000+(n-1)75

Part (B)   2,275

subtract the 1 it's not 2350

Step-by-step explanation:

Answer:

3.0 kg

Step-by-step explanation:

Momentum before collision = momentum after collision

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

(1.0 kg) (5.0 m/s) + m (-2.0 m/s) = (1.0 kg) (-4.0 m/s) + m (1.0 m/s)

5.0 kg m/s + m (-2.0 m/s) = -4.0 kg m/s + m (1.0 m/s)

9.0 kg m/s = m (3.0 m/s)

m = 3.0 kg

Answer:

Charlie could gather 30 pieces of fruit.

Fetching Information:

As Charlie has gathered apples pears and plums, and the number of apples and plums are 10 partners, and also there are same number of apples and pears.

What to Determine?

How many pieces of fruit could Charlie determine?

Solution:

Let 'a' be the number of apples, 'b' be the number of plums, and 'c' be the number of pears.

As the number of plums and apples is same i.e both are 10 in numbers.

So, a = b = 10

Note that number of pears and apples is also same. So, the the total number of pears will be 10.

So, c = 10

Total number of pieces of fruit = number of apples + number of plums + number of pears

Hence,

            Total number of pieces of fruit = a + b + c

                                                                 = 10 + 10 + 10

                                                                  = 30

Thus, Charlie could gather 30 pieces of fruit.

Keywords: number, total

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Answer:

Seawater

Step-by-step explanation:

I just took a quiz on this and it said the correct answer is sea water

Answer:

The equation of the line is [tex]y=-8[/tex]

Step-by-step explanation:

we know that

The equation of the line [tex]y=9[/tex] is a horizontal line (parallel to the x-axis)

The equation of a horizontal line is equal to the y-coordinate of the point that passes through it

In this problem, the line passes through the point (3,-8)

The y-coordinate is -8

therefore

The equation of the line is [tex]y=-8[/tex]

Answer:

(6,0)

Step-by-step explanation:

The given system has equations:

[tex]x-4y=6[/tex]

[tex]2x+2y=12[/tex]

Multiply the top equation by 2 to get:

[tex]2x-8y=12[/tex]

[tex]2x+2y=12[/tex]

Subtract the top equation form the bottom equation to get:

[tex]2x-2x+2y--8y=12-12[/tex]

[tex]\implies 10y=0[/tex]

[tex]\implies y=0[/tex]

Put y=0 into [tex]x-4y=6[/tex]

[tex]x-4*0=6[/tex]

[tex]\implies x=6[/tex]

Therefore the solution is (6,0)

Your Answer Is:

C: (6,0)

Answer:

[tex]y=-2x-2[/tex]

Step-by-step explanation:

we have

[tex]y=-2x+5[/tex]

This is the equation of a line in slope intercept form

where

[tex]m=-2[/tex] ---> the slope

[tex]b=5[/tex] ----> the y-intercept

we know that

If the given line was shifted down 7 units, then the new y-intercept is equal to

[tex]b=5-7=-2[/tex]

The slope of the new line will be the same that the original line, because are parallel lines

so

The new equation is

[tex]y=-2x-2[/tex]

Answer:

68

Step-by-step explanation:

P- parentheses

E- exponential

M- multiplication

D- division

A- addition

S- subtraction

2 x 36 = 72

72 - 24 ÷ 6

24 ÷ 6 = 4

72 - 4 = 68

Answer:

68

Step-by-step explanation:

*Remember the order of operations PEMDAS*(Parentheses, Exponents, Multiplication and Division, Addition and Subtraction)

hope it helps:)

Answer:

Marcelino will break even

Step-by-step explanation:

if he spends 45 dollars on profits, and sells each balloon for $1.50 then you multiply 30 balloons by 1.5 and that equals 45 dollars, so he will break even

Answer:

C

Step-by-step explanation:

Answer:

(2,0)

Step-by-step explanation:

we know that

If a ordered pair is a solution of the inequality, then the ordered pair must satisfy the inequality

we have

[tex]y > -3x+2[/tex]

Substitute the value of  x and the value of y of each point in the inequality and then compare the results

case a) (0, 2)

[tex]2 > -3(0)+2[/tex]

[tex]2 > 2[/tex] ----> is not true

so

the point not satisfy the inequality

therefore

The point is not a solution of the inequality

case b) (2,0)

[tex]0 > -3(2)+2[/tex]

[tex]0 > -4[/tex] ----> is true

so

the point satisfy the inequality

therefore

The point is a solution of the inequality

case c) (1, -2)

[tex]-2 > -3(1)+2[/tex]

[tex]-2 > -1[/tex] ----> is not true

so

the point not satisfy the inequality

therefore

The point is not a solution of the inequality

case d) (-2, 1)

[tex]1 > -3(-2)+2[/tex]

[tex]1 > 8[/tex] ----> is not true

so

the point not satisfy the inequality

therefore

The point is not a solution of the inequality

see the attached figure to better understand the problem

Answer:

(2,0)

Step-by-step explanation:

Answer:

Part 1) [tex]A=126.87^o[/tex]

Part 2) [tex]tan(A)=-\frac{4}{3}[/tex]

Step-by-step explanation:

we have

[tex]cos(A)=-0.6[/tex]

The cos(A) is negative, that means that the angle A in the triangle ABC is an obtuse angle and the value of the sin(A) is positive

The angle A lie on the II Quadrant

step 1

Find the measure of angle A

[tex]cos(A)=-0.6[/tex]

using a calculator

[tex]A=cos^{-1}(-0.6)=126.87^o[/tex]

step 2

Find the sin(A)

we know that

[tex]sin^2(A)+cos^2(A)=1[/tex]

substitute the value of cos(A)

[tex]sin^2(A)+(-0.6)^2=1[/tex]

[tex]sin^2(A)=1-0.36[/tex]

[tex]sin^2(A)=0.64[/tex]

[tex]sin(A)=0.8[/tex]

step 3

Find tan(A)

we know that

[tex]tan(A)=\frac{sin(A)}{cos(A)}[/tex]

substitute the values

[tex]tan(A)=\frac{0.8}{-0.6}[/tex]

Simplify

[tex]tan(A)=-\frac{4}{3}[/tex]

Answer:

The cost of producing 50 blu-rays will be $1337.5

Each blu-rays must be sold of $26.75

Step-by-step explanation:

The cost of producing x number of blu-rays is given by the relation  

B(x) = 1250 + 1.75x ........... (1)

Therefore, the total cost for producing 50 blu-rays will be  

B(50) = 1250 + 1.75 × 50 = $1337.5 (Answer)

Now, Alexis does not want to make a profit by selling the blu-rays to her friends and wants just to cover her costs.

Therefore, the selling price of 50 blu-rays will be $1337.5.

Hence, each blu-rays must be sold of [tex]\frac{1337.5}{50} = 26.75[/tex] dollars. (Answer)

Answer:

Therefore the slope of the line shown on the graph is option  D)

[tex]-\dfrac{2}{3}[/tex]

Step-by-step explanation:

Given:

Let the Two points on the line be

point A( x₁ , y₁) ≡ ( 0 , 0)  one as a Origin  

point B( x₂ , y₂) ≡ (-3, 2)  

To Find:

Slope AB = ?

Solution:

For a slope  we require two points i.e

[tex]Slope=\dfrac{y_{2}-y_{1} }{x_{2}-x_{1}}[/tex]

Substituting the given values we get

[tex]Slope(AB)=\frac{2-0}{-3-0}\\\\Slope(AB)=-\dfrac{2}{3}[/tex]

Therefore the slope of the line shown on the graph is option  D)

[tex]-\dfrac{2}{3}[/tex]

Answer:

I THINK IT IS OB

HOPE IT HELPS!

Answer:

B

Step-by-step explanation:

Answer:

v<=-3

Step-by-step explanation:

-3(v-3)-6>=12

-3v+9-6>=12

-3v+3>=12

-3v>=12-3

-3v>=9

v>=9/-3

v>=-3

Answer:

Step-by-step explanation:The first fraction is between 27 and 28, closer to 28. The second fraction is between 3 and 4, closer to 4. Compatible numbers in division are numbers that can be divided mentally. 28 divided by 4 is 7. The quotient will be around 7.

Answer:

Step-by-step explanation:

Sample Response: The first fraction is between 27 and 28, closer to 28. The second fraction is between 3 and 4, closer to 4. Compatible numbers in division are numbers that can be divided mentally. 28 divided by 4 is 7. The quotient will be around 7.

Answer:

your answer is down below

Step-by-step explanation:

Check the picture below.

The equation y2=3x+1 is a function.

Determine whether y2=3x+1 is a function

A function is a relation in which each input has exactly one output. To determine if the equation y2=3x+1 is a function, we need to check if each input value of x corresponds to exactly one output value of y.

In this case, the equation represents a quadratic curve, which passes the vertical line test, meaning that it is indeed a function.

For example, when x=1, we can substitute it into the equation as follows: y2 = 3(1) + 1 = 4.

Therefore, for every value of x, there is a unique value of y, indicating that the equation y2=3x+1 is a function.

The x - intercept is (9, 0) and y - intercept is (0, -6)

Solution:

Given that the equation is: 2x - 3y = 18

We have to find the x and y intercepts of the equation

The x-intercept is the point at which the line crosses the x-axis. At this point, the y-coordinate is zero.

The y-intercept is the point at which the line crosses the y-axis. At this point, the x-coordinate is zero.

Finding x - intercept:

Substitute y = 0 in given equation

2x - 3y = 18

2x - 3(0) = 18

2x = 18

x = 9

Thus the x - intercept is (9, 0)

Finding y - intercept:

Substitute x = 0 in given equation

2(0) - 3y = 18

-3y = 18

y = -6

Thus the y-intercept is (0, -6)

Answer:

[tex]\$52.50[/tex]

Step-by-step explanation:

we know that

The simple interest formula is equal to

[tex]A=P(1+rt)[/tex]

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

[tex]t=1\ year\\ P=\$50\\ A=?\\r=5\%=5/100=0.05[/tex]

substitute in the formula above

[tex]A=50(1+0.05*1)[/tex]

[tex]A=50(1.05)[/tex]

[tex]A=\$52.50[/tex]

Answer:

The correct answer is B. y = 5

Step-by-step explanation:

Let's recall that two are triangles are similar when its side lengths are proportional. That is in our case, if Δ ABC is similar to Δ DEF , then the following equation holds:  

EF/BC = DF/AC

Replacing with the real values:

6/12 = y/10

Cross multiplication:

12 * y = 10 * 6

12y = 60

y = 60/12

y = 5

The correct answer is B. y = 5

Answer:

f(5) = 3200

Step-by-step explanation:

Using the recursive formula to generate the terms, that is

f(2) = 2 × f(1) = 2 × 200 = 400

f(3) = 2 × f(2) = 2 × 400 = 800

f(4) = 2 × f(3) = 2 × 800 = 1600

f(5) = 2 × f(4) = 2 × 1600 = 3200

Answer: 6400

Step-by-step explanation:

Given :

f(1) = 200

f(n) = 2.f(n-1) , for n = 2 ,3 , 4 , ...

To find the 5th term

when n = 2 , the sequence becomes

f(2) = 2 .f(2-1)

f(2) = 2 f(1)

since f(1) = 200

therefore:

f(2) = 2 x 200

f(2) = 400

When n = 3

f(3) = 2f(2)

f(3) = 2 x 400

f(3) = 800

When n = 4

f(4) = 2 f(3)

f(4) = 1600

When n =5

f(5) = 2f(4)

f(5) = 3200

When n = 6

f(6) = 2f(5)

f(6) = 6400

Since n = 2 , 3 , 4 ... this means that the 5th term if f(6) , therefore ,the 5th term is 6400

Answer:

X2-13X-18=0

Step-by-step explanation:

x-2(x+3)=4(2x+3)-x(x-4)

Multiply through the equations

x-2x-6=8x+12-x2+4x

Equate all to zero

x-2x-6-8x-12+x2-4x=0

x2-4x+x-2x-8x-6-12

x2-13x-18=0

Answer:

A. x minus 2 x minus 6 = 8 x + 12 minus x minus 4

E. Negative x minus 6 = 7 x + 8

Step-by-step explanation:

i took the unit test review on edg