I need help with this math problem please

I Need Help With This Math Problem Please

Answers

Answer 1

Answer:

65 -3x = 55 -2.5x20 periods$5

Step-by-step explanation:

The value of the first card starts at $65 and decreases by $3 for each of x periods. Its value is ...

  65 -3x

The value of the second card starts at $55 and decreases by $2.50 for each of x periods. Its value is ...

  55 -2.5x

The equation that can be used to find x that makes the values equal is ...

  65 -3x = 55 -2.5x

__

The solution can be found by adding 3x-55 to both sides of this equation.

  10 = 0.5x

Multiplying by 2 gives ...

  20 = x

After 20 30-day periods. the cards will have the same value.

__

The value after 20 periods is ...

  65 -3×20 = 65 -60 = 5

Both cards will have a value of $5 when they have the same value.


Related Questions

-5x + 4 = 2x + 16
How do I solve this

Answers

Subtract 2x from both sides then you’d have -7x+4=16 Then you subtract 4 from both sides and you’d get -7x=12. Next you divide both side by -7 so x=1.75 rounded to the nearest hundredth.

-4/6+-7/9
RATIONAL NUMBER
PLS HELP ME GUYS
IF U ARE THE FIRST PERSON TO ANSWER I WILL MARK U AS THE BRAINLIEST

Answers

[tex]-\frac{4}{6} + -\frac{7}{9}[/tex] = [tex]-\frac{13}{9}[/tex]

Step 1: Cancel 4/6 and change to 2/3.

[tex]= -\frac{2}{3} - \frac{7}{9}[/tex]

Step 2: Adjust Fractions based on the LCM.

The LCM of 3 , 9 : 9

[tex]= -\frac{6}{9} - \frac{7}{9}[/tex]

[tex]= \frac{-6 - 7}{9}[/tex]

Step 3: Subtract the numbers : - 6 -7 = -13

[tex]= -\frac{13}{9}[/tex]

Midpoint (-10,9), (3,8)

Answers

Answer:

(-3.5 8.5)

Step-by-step explanation:

Midpoint Formula: ([tex]\frac{x2 + x1}{2}[/tex], [tex]\frac{y2 + y1}{2}[/tex])

What I did: -10 + 3 = 7, 7 / 2 = 3.5 x = 3.5 | 9 + 8 = 17, 17 / 2 = 8.5

Midpoint = (-3.5, 8.5)

The table below shows the number of school absences each day.

A 2-column table with 6 rows. Column 1 is labeled Day (x) with entries 1, 2, 3, 5, 6, 7. Column 2 is labeled Absences (y) with entries 10, 6, 2, 10, 6, 2.

Which equation models the data in the table?

y = 4 cosine (StartFraction pi Over 2 EndFraction x minus StartFraction pi Over 2 EndFraction) + 6
y = 4 cosine (StartFraction pi Over 2 EndFraction x + StartFraction pi Over 2 EndFraction) + 6
y = 2 cosine (StartFraction pi Over 2 EndFraction x minus StartFraction pi Over 2 EndFraction) + 6
y = 4 cosine (StartFraction pi Over 2 EndFraction x + StartFraction pi Over 2 EndFraction) + 6

Answers

Answer:

A

Step-by-step explanation:

did it on edge soo there ya go

Answer:

a

Step-by-step explanation:

The rule that maps each domain value to its range value is f(x)= ___x.

Answers

Answer:

f(x) = 1/2x

Step-by-step explanation:

When x = -4  the output is -2

We are dividing by 2

When x = -2 the output is -1

f(x) = 1/2 x

Check when x = 2

f(2) = 1/2 (2) =1

the sqaure root of 130 falls between which consecutive numbers

Answers

11 and 12 that’s the answer

What’s 6 (3x + 5) please

Answers

6(3x+5)

6*3x=18x

6*5=30

18x+30 is your answer! I hope this helped! :)

Kermit's favorite iced tea is made with 15 tea bags in every 2 liters of water. Peggy made a 12-liter batch of iced tea with 90 tea bags. What will Kermit think of Peggy's iced tea? Choose 1 answer: A It is too strong. B It is too weak. C It is just right.

Answers

Answer:

  C.  It is just right.

Step-by-step explanation:

We want to compare the ratios ...

  bags : liters = 15 : 2

and

  bags : liters = 90 : 12

If we multiply the numbers of the first ratio by 6, we see they are identical to those in the second ratio:

  (15)(6) : (2)(6) = 90 : 12

The ratio of bags to liters for Peggy's tea matches the ratio Kermit likes. He will think it is just right.

Answer:

C its just right

Step-by-step explanation:

All of the following equations have the same solution except _____.


-10 = -3 m + 2
2 - 3 m = -10
-3 m + 2 = -10
3 m + 2 = -10

Answers

this is if you need it written out, but the answer would be the last one 3m+2=-10 doesn’t have the same solution as the rest

Answer:

All of the following equations have the same solution except 3m + 2 = -10.

Step-by-step explanation:

PLEASE HELP I’LL GIVE BRAINLIEST!

Questions:
1. How do you solve for a specific variable?
2. Why would you want to solve for a specific variable?
3. Show an example of solving for a specific variable.

Answers

Here the first one, One goal in solving an equation is to have only variables on one side of the equal sign and numbers on the other side of the equal sign. The other goal is to have the number in front of the variable equal to one. The strategy for getting the variable by itself with a coefficient of 1 involves using opposite

Geography textbook has a width of 9 inches and a diagonal of 15 inches. What is the length of the
textbook?

Answers

Answer:

12 inches

Step-by-step explanation:

The Pythagorean's theorem states that a triangle's hypotenuse's length is equal to a^2+b^2=c^2.

9 is a, b is the length, and c is the 15.

9^2+b^2=225

225-81=144

The square root of 144 is 12, therefore 12 inches is the length.

The area of a rectangle is 24,396 square centimeters. If the width is 38 centimeters, what is the length?

Answers

Answer:

642

Step-by-step explanation:

area equals LxW

divide 24396/38

answer 642

642x38= 24396

To mail a package, UPS charges a $7 flat fee and $2 per pound. FedEx charges
a $5 flat fee and $3 per pound.

Answers

Answer:

The package where they charge the same must cost $2

Step-by-step explanation:

Given

UPS

[tex]Flat = \$7[/tex]

[tex]Additional = \$2/lb[/tex]

FedEx

[tex]Flat = \$5[/tex]

[tex]Additional = \$3/lb[/tex]

Required

What pound do both charges are the same

Represent the charges with x;

For UPS, it can be written as:

[tex]Charges = 7 +2x[/tex]

For FedEx:

It is:

[tex]Charges = 5 + 3x[/tex]

Equate these charges together

[tex]5 + 3x = 7 + 2x[/tex]

Collect Like Terms

[tex]3x - 2x = 7 - 5[/tex]

[tex]x = 2[/tex]

Hence, the package where they charge the same must cost $2

Carlos' cell phone company charges $50 per month for unlimited calls and internet use and $0.15 per text message. His last cell phone bill was $56.75. How many text messages did Carlos send last month?

Answers

Answer:

Step-by-step explanation:

.15x + 50 = 56.75

.15x = 6.75

x = 45 texts

45 texts I’m pretty sure. 56.75 minus the $50 charge is $6.75. So divide 6.75 by 0.15 and u get 45:)

work out 6d + 8 = 14 + 3d

Answers

In 6d + 8 = 14 + 3d , D=2

Isolate the variable by dividing each side by factors that don't contain the variable.

Order the following from least to greatest: 14 -6, 0, 8, 3.4, -8, 2​

Answers

Answer:

-6. -8 0 3.4 6 8 14

Step-by-step explanation:

I think I am correct

Answer:

-6. -8 0 3.4 6 8 14

Hope I helped ya

which of the following are based on the diagram below? (select all answers that are true)

please help me out here!

Answers

It’s the first one.

what's 32.88 divided by 0.6​

Answers

It’s 54.8 I’m pretty sure
(I hope this helps!)

Answer:

54.8 is the correct answer

Sandy went to Pens R Us during their annual sale. There was a pack of 20 pens for $8.50. On another aisle, Sandy saw a pack of 6 pens for $4.50.Which is the better buy and why?. Find the rate and unit rate

Answers

Answer:

20, for 8.50

Step-by-step explanation:

6 + 6 = 12, which is 4.50 + 4.50, which would be about 10, so 20 for 8.50 would be better.

How do you solve this problem? 7/10 x 1 1/3

Answers

Answer:

77/30

Step-by-step explanation:

7/10 x 11/3 = 7x11 = 77 and 10x3 = 30

the answer is 77/30

The answer is 2.56666667. All u have to do is multiply 7/10 by 11/3.

feet
12. Darcy and Danny were diving on a trip in
the Bahamas. When they stopped to look at a
school of fish, Darcy was 178 feet below the
surface of the water, and Danny was
2
feet
below the surface. Who was closest to the
is
Ire
surface of the water

Answers

Here’s the answer; it’s just a case of finding the two values and comparing them.

Danny was closest to the surface of the water.

Here,

Darcy and Danny were diving on a trip in the Bahamas.

When they stopped to look at a school of fish, Darcy was [tex]\sqrt{78}[/tex] feet below the surface of the water and Danny was 17/2 feet below the surface.

What is square root?

A square root of a number x is a number y such that [tex]y2 = x[/tex].

Now,

Darcy was [tex]\sqrt{78}[/tex] feet below the surface of the water.

⇒[tex]\sqrt{78} = 8.83[/tex]

Danny was 17/2 feet below the surface.

[tex]\frac{17}{2} = 8.5[/tex]

Clearly,  [tex]8.5 < 8.85[/tex]

Hence, Danny was closest to the surface of the water.

Learn more about the square root visit:

https://brainly.in/question/28093691

#SPJ2


Tamara wants to calculate the height of a tree outside her home. Using her clinometer, she measures the slope angle from 30 feet
away from the base of the tree and gets an angle of 62.
If Tamara's eye level is 5.5 feet above the ground, how tall is the tree? (Round your answer to the nearest hundredth)
Answer

Answers

Answer:

61.922 feet

Step-by-step explanation:

For this problem, we simply want to set up a trigonometric function that computes the height of the tree, and we want to add the height of Tamara.

We are given a distance from the tree of 30 feet with an angle from her eye-level to the top at 62 degrees.  So we can say the following:

y = tan(Θ) * x

Where Θ = 62 degrees, x = 30 feet, and y is the height of the tree from Tamara's eye level.

y = tan(Θ) * x

y = tan(62) * 30

y = 56.422

So we also need to include the height of Tamara to get the total height of the tree from the ground to the top.

56.422 ft + 5.5 ft = 61.922 ft

Hence, the total height of the tree is 61.922 feet.

Cheers.

The height of the tree is 61.92 feet.

Given information:

Tamara wants to calculate the height of a tree outside her home.

She is 30 ft away from the tree.

Tamara's eye level is 5.5 feet above the ground.

The angle of inclination of the top of the tree is 62 degrees.

Let h be the height of the tree.

See the attached image.

Use trigonometric ratios in triangle ABC to calculate the height of the tree as,

[tex]tan62=\dfrac{AB}{BC}\\1.8807=\dfrac{h-5.5}{30}\\h-5.5=56.4217\\h=61.9217\\h\approx61.92\rm\;ft[/tex]

Therefore, the height of the tree is 61.92 feet.

For more details, refer to the link:

https://brainly.com/question/14163589

38. Persevere in Problem Solving The difference between the solutions to
the equation x = a is 30. What is a? Show that your answer is correct.

Answers

Answer:

either a or x, the value is still 30

Step-by-step explanation:

given:

x = a is 30

find:

a = ?

since x = a = 30

a = 30 = x

therefore,

either a or x, the value is still 30

2 is multipled by the difference of a number and 4 equation

Answers

Answer:

This is confusing.. so all ill say involving 2 and 4.

2 x 4 = 8

2 + 4 = 6

2 - 4 = 2

2 dived by 4 = 2

Decimal form:

2.4 or 4.2

Fraction form:

2/4 or 4/2

find the values of x and y.

Answers

Step-by-step explanation:

Hey there!!!

When you closely see in figure, we find that,

90° and (2y + 5)° are supplementary,

So, 90° + 2y +5°=180° { supplementary angle is always 180°}.

or, 2y = 180°-95°

[tex]y = \frac{85}{2} [/tex]

Therefore the measure of angle y is 42.5°.

Again, (5x-17)° + (3x - 11)° = 180° (They are linear pair).

8x - 28° = 180°

8x = 180°+28°

[tex]x = \frac{280}{8} [/tex]

Therefore the measure of angle x is 26°.

Hope it helps...

36. Walter and Brian each have a CD collection.
The number of CDs in Walter's collection can be represented by x.
The number of CDs in Brian's collection is 3 times the number in
Walter's collection.
The total number of CDs in both collections is 144.
What is x, the number of CDs in Walter's collection?
A. 108
B. 48
C. 72
D. 36

Answers

x+3x=144
4x=144
144/4=36
X=36

Answer:

x+3x=144

4x=144

144/4=36

X=36

Step-by-step explanation:

Please help me! I’m stuck - Mathematics

Answers

Answer:

17. 13

18. 3x + 12

19. 1/4

Step-by-step explanation:

17.

[tex]3a + b = 3(5) - 2 \\ = 13[/tex]

18.

[tex]3(x + 4) = 3x + 12[/tex]

19.

[tex]p \: = \frac{3}{3 + 4 + 5 } \\ = \frac{3}{12} \\ = \frac{1}{4} [/tex]

Answer:

Step-by-step explanation:

17. 3(5) + 2 = 15 + 2 = 17

18. 3(x + 4) = 3x + 12

19. 3/(3+4+5)= 3/12= 1/4

What the unit rate for this? “9 inches of snow in 3 hous”

Answers

Answer:

3 inches per hour

Step-by-step explanation:

divide the number on the y axis (i'm assuming it's inches of snow) by the number on the x axis (i'm assuming its hours)

by doing this you will get 3 inches per hour

In need of assistanceeeee!

Answers

Answer:

300 mi

Step-by-step explanation:

set the equations equal to each other.

110+(.60x)=20+(.90x)

solve

90=0.30x

x=300

check

"substitute x"

both = $290

Answer:

300 mi

Step-by-step explanation:

simplify the following expressions ( use distributed property )

Answers

-9+3x

2(9-3x)/-2

-(9-3x)

-9+3x

Brainliest?
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