Assume y varies directly with x. If y = 80
when x = 8, find x when y = 40.

Answers

Answer 1

Answer:

4

Step-by-step explanation:


Related Questions

A cell phone company charges $89.99 for a new phone and then $19.99 per month. Write a function to represent this situation.

Please help me

Answers

Answer:

y= 19.99x +89.99

Step-by-step explanation:

Answer:

Step-by-step explanation:

$89.99+$19.99x

Mr. Wang bought five packages of ground beef. The actual weights of the five packages were 1 pounds, 1.05 pounds, 1.25 pounds, 1 pounds, and 1.058 pounds. Part A Locate and label the weights of the packages of ground beef on the number line. Part B List the weights of the packages of ground beef in order from lightest to heaviest.

Answers

Answer:

Location & label of beef weights  - arranged in ascending order, located on number line

Step-by-step explanation:

Location & label of beef weights { In ascending order, from left to right on number line}

1  ( = 1) < 1.05 < 1.058 < 1.25

The above ascending order arrangement (from lightest to heaviest weight) is : the arrangement in which - the numbers will be arranged on number line, from left to right.

Here is a list of ingredients for making 12 small cakes. 108 g margarine 180 g sugar 200 g plain flour 1 teaspoon baking powder 2 eggs. Joe is going to make 24 of the small cakes. Determine how much margarine he will need. Write your answer in a complete sentence.

Answers

Answer:

216g of margarine

Step-by-step explanation:

From the above question:

12 small cakes required 108g of margarine

If he would be making 24 of the small cakes, hence, that would be calculated as:

12 small cakes = 108g of margarine

24 small cakes = x

Cross Multiply

12 × x = 24 × 108g

x = 24 × 108g/12

x = 216g of margarine

Therefore, he would need 216g of margarine to make 24 of small cakes

Question 5. Solve x + 9 = -13

Answers

Answer:

x = -22

Step-by-step explanation:

x + 9 = -13

  -9     -9

x = -13 - 9

x = -22

Move all terms not containing x to the right side of the equation.

Answer: x = -22

Two bikers rode at a constant speed on a 150-meter track. The data here show each biker's distance for a certain part of the race. Who won the race and by how much?

Answers

Answer: 2 then 1

Step-by-step explanation:

Just did it

A line with a positive slope is parallrl to one of the lines shown. What is its slope? Use the graph shown below. The slope is:

Answers

Answer:

the slope of the blue  line is 2/3

Step-by-step explanation:

y2-y1 over x2-x1

6,5 and we have 0,1

5-1/6-0

4/6=2/3

100% as a fraction in simplest form

Answers

Answer:

1

Step-by-step explanation:

100/100 =

1

srry if wrong but

hope this helps

take care

What is the derivative of f(x) = 9x^2 + x?

Answers

Answer:

f'(x) = 18x + 1

Step-by-step explanation:

f(x) = 9x^2 +x

f'(x) = 9(2x) + 1

f'(x) = 18x + 1

what’s the quotent of -3/8 and -1/4

Answers

Answer:

1.5

Step-by-step explanation:

-3/8=-0.375

-1/4=-0.25

the negatives cancel each other out so it is 0.375/0.25

.25 goes into .375  1.5 times, so the answer is 1.5

Have a good day!

1.5

It needs to be 20 characters long so I’m just putting this so I can actually submit. The other guy already out the explanation so I’m proud of you and just tryna get points. Anyways the calculator is always available too if you need it

Is there anybody from the online schooling called BUZZ? that can help me out at all?
Have a great day! Merry Christmas! <3

Answers

No, sorry about that.

show work what is the gcf of 12x^2 and 15x^3

Answers

Hey there! I'm happy to help!

The greatest common factor is the largest factor that both numbers contain. Let's look at the factors of these terms.

12x²: 1, 12, 2, 6, 3, 4, x, x

15x³: 1, 15, 3, 5, x, x ,x

We see that both of these numbers contain a 3 and 2 x's, so our GCF would be 3x².

Have a wonderful day!

What is the range of this function? Help

Answers

Answer:

Range is the extension of the values across the x-y plane. We can see the data extends as far as -13 and as far as 11 so (-13,11)

On Saturday, Alicia ran 2 miles. This was 0.3 miles farther than Henry ran. Write and solve an
an addition equation to find out how many miles Henry ran.

Answers

Answer: a - 0.3.

Step-by-step explanation;

Let a represent the number of miles that Alicia ran. The equation will be this: a - 0.3. You will subtract 0.3 from the number of miles that Alicia ran because her amount is 0.3 miles farther than what Henry ran.

Andrew purchased a coat for $50.00 on sale for 25% off. What was the cost of the coat after the discount not including tax?

Answers

Answer:

$ 37.50

Step-by-step explanation:

100% - 25% = 75%

75% = 0.75

50 × 0.75 = $ 37.50

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

1/10 10% of 1

Step-by-step explanation:

3/4 0.75

0.2 20% of 1

15/10 150% of 1

14/10 1.4

Fraction: 1/10, 3/4, 3/2, 4/5

Decimal: 0.75, 0.2, 1.4

Percentage: 10%, 20%, 150%

(The answer is in the same order as the column, I did not include the boxes that were already filled in)

Solve for x. Show your work.

Answers

since AB and AC are both across from angle 44, the 2 segments are congruent

7=3x+1

6=3x

x = 2

The position data for line 1 was recorded in 1-second intervals. Draw a graph with distance on the y-axis and elapsed time on the x-axis. Reference all distance and time measurements to dot 1. To plot a point, use the circle tool. To draw a line between points, use the line tool. To move a point or line, use the select tool.​

Answers

Answer:

Picture

Step-by-step explanation: Plato

Which of the following is a true statement of two linear equations?

Answers

A and C, perpendicular have opposite reciprocals and when they’re the same line they are the same equation

What is the slope of the line that passes through (3, 1) and (−1, 4) ?

−3/4

−1/2

5/2

Answers

Answer:

-3/4

Step-by-step explanation:

4-1/-1-3

is 3/-4

or -3/4

Hope this helps plz hit the crown :D

Solve the system.
-2x + 1/2y
= 3/2
x - зу
= 2
Find the value of 'x'.

Answers

Answer:

x = -1

Step-by-step explanation:

i multiplied the first equation by 2 to eliminate the fractions and got:

-4x + y = 3

used substitution method:  y = 3 + 4x

x - 3(3 + 4x) = 2

x - 9 -12x = 2

-11x = 11

x = -1

Given y+6=10(x-9) What is the point used to write the equation?

Answers

Answer:

Point (9, -6)

General Formulas and Concepts:

Algebra I

Point-Slope Form: y - y₁ = m(x - x₁)  

x₁ - x coordinate y₁ - y coordinate m - slope

Step-by-step explanation:

Step 1: Define

y + 6 = 10(x - 9)

Step 2: Break Function

Identify Parts

Slope m = 10

Point (9, -6)

Write an equivalent expression for 2(1.7x + 3.3) + 5(2.6x + 1.4) by combining like terms

Answers

Answer:

16.4x + 13.6

Step-by-step explanation:

Equivalent Expressions

Algebraic expressions can be given in different forms when applying properties of the basic operations.

The given expression is:

2(1.7x + 3.3) + 5(2.6x + 1.4)

Multiplying both parentheses by the outer factor:

3.4x + 6.6 + 13x + 7

Combining like terms:

16.4x + 13.6

The original and the final expressions are equivalent because they produce the same results

Meghan earns 20.00 dollars by walking dogs. She uses all of her earnings to buy a shirt for 12.85 dollars and some stickers for 0.65 dollars each. How many stickers does she buy ?

Answers

Answer:

She bought 11 stickers

Step-by-step explanation:

20 - 12.85

7.15

then

7.15/0.65

11

Answer:

the answer is 11 :D

Step-by-step explanation:

Im not sure but please correct me if im wrong!

what is 2.98989 as a fraction

Answers

Answer:

2.98989/1

Step-by-step explanation:

Given f(x)=7x+12 and Domain={3,6,9} find Range
{21,42,63}
{9,6,3}
{33,54,75}
{19,26,33}

Answers

Answer:

the answer is the 3rd option

range = { 33, 54, 75 }

A new neighborhood activity complex is being built in Erie. The perimeter of the rectangular playing field is 448 yards. The length of the field is 6 yards less than quadruple the width. What are the dimensions of the playing field?

Answers

Answer:

Length = 178 yards and Breadth = 46 yards

Step-by-step explanation:

The perimeter of the rectangular field is 448 yards

Let the width is b and the length of the field is (4b-6) yards

We need to find the dimensions of the playing field. We know that the perimeter of a rectangle is given by :

P = 2(l+b)

ATQ,

[2((4b-6)+b)] = 448

2(5b-6) = 448

5b-6 = 224

5b = 230

b = 46 yards

Length = (4b-6)

= 4(46) - 6

= 178 yards

Hence, the length and breadth of the field is 178 yards and 46 yards respectively.

What determines the pitch of a sound? PLEASE HELP MEH!!

the decibel level
the frequency of vibrations
the amplitude
the medium

Answers

Answer:

Since pitch is such a close proxy for frequency, it is almost entirely determined by how quickly the sound wave is making the air vibrate and has almost nothing to do with the intensity, or amplitude, of the wave. That is, "high" pitch means very rapid oscillation, and "low" pitch corresponds to slower oscillation.

Step-by-step explanation:

please mark me as brainliest thank you

Olivia baked 45 mini-loaves of banana bread to be sliced for snacks at a craft fair. She will place an equal number of loaves in 6 different locations. What if Olivia wants to put only whole loaves at each location? How many loaves will be at each location?

Answers

Answer:

7 whole loaves of bread.

Step-by-step explanation:

Since there are total of 6 locations and each location needs to have the same number of whole loaves of bread we simply need to divide the number of mini-loaves of banana bread by the number of locations like so...

45 / 6 = 7.5

As we can see by the mathematical expression above 45 loaves of bread can be divided into 6, giving each location 7.5 loaves of bread but since each location needs only whole loaves then that would mean that each location would get 7 whole loaves of bread.

Write an equation in​ point-slope form of the line that passes through the given point and with the given slope m.
​(-4,1) m=4
The equation of the line is ?

Answers

Answer:

An equation in​ point-slope form of the line that passes through the given point and with the given slope m = 4 will be:

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

Step-by-step explanation:

Given

The point = (-4, 1)m = 4

Using the point-slope form of the line equation

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

here:

m = slope(x₁, y₁) = point

substituting the values m = 4 and the point (-4, 1) in the point-slope form of the line equation

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

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

Thus,

An equation in​ point-slope form of the line that passes through the given point and with the given slope m = 4 will be:

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

Note: It can further be simplified

[tex]y-1=4\left(x+4\right)[/tex]

Add 1 to both sides

[tex]y-1+1=4\left(x+4\right)+1[/tex]

[tex]y=4x+17[/tex]

Graph the equation.
y =
-3/4
(2+3)(x + 7)

Answers

The equation y =  -3/4  (2+3)(x + 7) is graphed in the image below.

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