Mathematics High School

If y varies directly as x and y = 5.5 when x = 11, find x when y = 3.5



0 x = 7
O x = 6
O x = 1.75
O x = 1.25

Answers

Answer 1

Answer:

x=7

Step-by-step explanation:

y=mx

5.5=m×11

5.5÷11=m

m=1/2

y=mx

3.5=1/2×x

3.5÷1/2=x

x=7

Answer 2

Answer:

x =7

Step-by-step explanation:

The direct variation equation is y = kx, where k is the constant of proportionality.

If y = 5.5 when x = 11, we can write 5.5 = 11k, which, when solved for k, yields k = 0.5.  

Then the direct variation equation in this case is y = 0.5x.

If y = 3.5, what is x?  y = 0.5x becomes 3.5 = 0.5x, yielding x = 7

Related Questions

can i plz have some help

Answers

Answer:

18.84

Step-by-step explanation:

The formula for circumference is 2*pi*r

So,

2*3.14*3

which equals,

18.84

Write an equation that could be used to find the value of x using the interior angles of ∆BDC, then solve it.

Answers

9514 1404 393

Answer:

  x = 16

Step-by-step explanation:

Either or both of the right triangles can be used to find x. Or, triangle ABC could be used. All numbers are assumed to be degrees.

Using ∆ABD

  55 +90 +2x+3 = 180

  2x = 32 . . . . . . subtract 148

  x = 16

Using ∆BCD

  50 +90 +2x+8 = 180

  2x = 32 . . . . . . subtract 148

  x = 16

Using ∆ABC

  55 +(2x +3) +50 +(2x +8) = 180

  4x = 64 . . . . . . . subtract 116

  x = 16

A store purchased a plasma screen TV for $770 and marked it up 150%. During a sale, the store marked it down 20%. What was the discount price on the plasma screen TV?​

Answers

Answer:

1540

Step-by-step explanation:

First find the new price after the markup

The markup is

770 * 150%

770 * 1.5

1155

Add this to the original price

770 + 1155

1925

Now find the discount

1925*20%

1925*.20

385

Subtract this amount from the 1925

1925-385

1540

The final price is 1540

Answer:

Solution given:

cost price [c.p] of TV =$770

MP=c.p+ 150% of c.p=$770+150/100×770=$1925

discount [D]=20%

now

discount amount=D% of MP=20/100×1925=$385 is your answer.

$385 was the discount price on the plasma screen TV.

I Need help ASAP.(please )

Answers

B and D are correct
The rest are wrong, if you need a reason why please tell me
Hope this helps!

Help please please this is a big grade !!

Answers

Answer:

10=480 cupcakes 864=18 boxes 24=1152 cupcakes 1536=32 boxes

Step-by-step explanation:

A string reaches from the top of a 17-foot pole to a point 13 feet from the base of the pole. To the nearest tenth of a foot, how long is the string?

Answers

Answer:

21.4 feets

Step-by-step explanation:

Using Pythagoras rule :

The length of the string:

Hypotenus = sqrt(opposite² + adjacent²)

Length of string = sqrt(17² + 13²)

Length = sqrt(289 + 169)

Length of string = sqrt(458)

Length of string = 21.400

Length = 21.4 feets

A car is 160 inches long.

A truck is 10% longer than the car.

How long is the truck?

Answers

Answer:

im pretty sure its 170 inches long

Step-by-step explanation:

Answer:

176 Inches long.

Step-by-step explanation:

160 multiplied by .1 gets you 10% then add 160 to 16 to get 176.

Please, if anyone knows help me, I need a lot of help in this activity.

Answers

Answer:

Step-by-step explanation:

Perimeter of the given polygon = n + 2 + 3 + 4 + n + 2 + 3 + 4

                                                     = 2(n + 2 + 3 + 4)

                                                     = 2(n + 9) units

Area of the composite figure = Area of rectangle A + Area of rectangle B + Area of rectangle C

                                                = (3 × 4) + (n ×2) + (2 × 3)

                                                = 12 + 2n + 6

                                                = 2n + 18

                                                = 2(n + 9) units²

Therefore, perimeter of the given figure = Area of the figure

the side lengths of a triangle are 6,8 and 10 is this a right triangle

Answers

Answer:

Hi friend I am new can you show me how post question pls

Step-by-step explanation:

can somebody help I am really bad at this

Answers

Answer:

40 feet

Step-by-step explanation:

4+4+8+4+12+8

= 40 ft.

In the given diagram(see image) , TAX and TBY are tangents to the circle and C is a point on the major arc.

Question :
If <CAX = 65° , <CBY = 76° , Calculate <ATB.​

Answers

Answer:

∠ATB = 102°

Step-by-step explanation:

Since ∠CBY is less than 90°, CB is not a diameter.

I did this in my head so I drew a sketch to show that around about way I did it. sketch attached:

I drew a third line from X to Y that is tangent to the circle at C.

Because each pair of tangent lines to a common point are equal, we have made three isosceles triangles.  

Now we know 2 of the three angles to ΔXYT, 180 - 50 - 28 = 102° for ∠ATB

Answer:

102°

Step-by-step explanation:

Given

∠CAX = 65° , ∠CBY = 76°

To find

∠ATB

Solution

Refer to attached picture

∠CAX= ∠CBA as same arc intercepted ∠CBY = ∠CAB as same arc intercepted

TAX is a straight angle and:

∠TAB = 180° - (∠CAX + ∠CAB) = 180° - (65° + 76°) = 39°

∠TBA = ∠TAB as two tangents intersect at same distance, their opposite angles are therefore same. ΔATB is an isosceles triangle.

∠ATB = 180° - 2*39° = 102°

It takes Jason 30 minutes to wash the dishes, but it takes 50 minutes for his younger brother. How many minutes will it take to wash the dishes if they work together? Round your answer to the nearest hundredth if necessary.

Answers

At the 2 together and then divide by 2 to find the average (40)

What is the decimal equivalent of 13/4?

Answers

Answer:

3.25

hope this helped!!

Answer:

3.25

Step-by-step explanation:

13 / 4 is an improper fraction . when you divide 13 by 4 you get 3.25

15 ejercicios de peróxidos tomando en cuenta su formulación y nomenclatura

Answers

Answer:

1) Av2O2 N.Stook: peróxido de oro (I) N.Sistemática: dióxido de dioro N.Tradicional: perioxido auroso

Find the radius of a circle with a diameter of 16

Answers

Answer: R = 8

Step-by-step explanation:

The Radius is R = 8. Give me Brainiest PLZZZ!!!

Answer:8 maybe?????

Step-by-step explanation:

plzz help mehhh plz :( ill mark you

Answers

Answer: 108

Step-by-step explanation: bottom figure=60 because 10x3x2=60

top one=48 4x4x3 so 48 60+48=108

plz mark me brainliest

please please help me with number 28 i’ll mark b

Answers

Answer:

both

Step-by-step explanation:

given sss, you will need to use Law of Cosines.

However, one you get one of the angles, the easiest way to solve for the second angle is to just use law of sines.

What is the probability of drawing a queen or a heart from a standard deck of 52 cards?
Reminder: the four card families
Pleasee helpppppp!!

Answers

Answer:

4/13

Step-by-step explanation:

4 queens and 13 hearts

4/ 52 + 13/52 - 1/52

16/52

4/13

Answer:

Step-by-step explanation:

There are 13 hearts in 52 cards. C From above, P(Queen)=4/52 and P Heart=13/52, the queen of hearts is in both categories so we have to subtract 1/52 so we don't double count.

Can someone help me with question 20 pls

Answers

Answer:

6x^3-12x^2+3x-3

Step-by-step explanation:

Answer:

6x³ - 12x² + 3x - 3

Step-by-step explanation:

f(x)      -        g(x)

= (6x³ - 3x² + 4x - 4) - (9x² + x - 1)

= 6x³ - 3x² + 4x - 4 - 9x² - x + 1

= 6x³ - 3x² - 9x² + 4x - x - 4 + 1

= 6x³ - 12x² + 3x - 3  

As an estimation we are told 5 miles is 8 km.
Convert 32.5 miles to km.

Answers

Answer:

52 km

Step-by-step explanation:

Given, 5 miles is 8km.

So, 1 mile will be (8/5) km.

Now, 32.5 miles will be (8/5) x 32.5 = 52 km

Two triangles are similar. The corresponding sides have a ratio of 2:5. If the larger triangle has a side length of 55 centimeters, what is the measurement of the corresponding side of the smaller triangle?
A.33 cm
B. 22
C.27
D.19cm

Answers

B (22cm)

2:5
55/5 = 11
11 * 2 = 22

what is the area of this figure​

Answers

Answer:

174.5m

Step-by-step explanation:

So we have to break the shapes down to triangle, rectangle and the small rectangle

Area of rectangle=WxL

Area of triangle= (BxH)÷2

triangle=

(23x11)÷2

=253÷2

=126.5m

rectangle=

9x19

=28m

square#2(the small one)=

5x4

=20m

All:

20+28+126.5

=174.5m

In ΔNOP, the measure of ∠P=90°, the measure of ∠N=7°, and NO = 3.4 feet. Find the length of OP to the nearest tenth of a foot.​

Answers

Answer:

0.4

Step-by-step explanation:

I did it on deltamath

Answer:

x=0.4144≈0.4 feet

Step-by-step explanation:

Deltamath

Find the degree measure of the angle expressed by 11x-6.

Answers

Answer:

Won't it just be 60, because it's an equilateral triangle.

Step-by-step explanation:

60 + 60 = 120

180 - 120 = 60

11x - 6 = 60

11x = 66

x = 66/11

x = 6

Let's substitute.

11(6) - 6 = 66 - 6 = 60

Jessie spent a total of 14.00 to purchase a gift and have it gift-wrapped and mailed. The cost for the postage was $2.25, and she knows the gift itself cost $9.50.

Answers

Answer:

she spent 11.75$ total

Step-by-step explanation:

9.50+2.25=11.75

Help me pleaseeeeeee

Answers

Answer:

56

Step-by-step explanation:

Answer:

i think it is 56 if it is wut i think it is

Step-by-step explanation:

Find the value for m
-10 + 59 = 5m = 7 + 3m

Answers

-10+59=5m=7+3m
-49= 5m=7+3m
5m=56+3m
2m=56
m=28

Apple juice and cranberry juice have been mixed in the ratio of 4:5. If the price of apple juice is 45 cents per pint and the price of cranberry juice is $0.8 per pint, what should the price of one pint of the mixture be?

Answers

Answer:

$0.24

Step-by-step explanation:

The computation of the price of the one pint of the mixture is shown below:

Since the ratio of apple juice and cranberry juice is 4:5

And, the price of apple juice is 45 cents i.e. = 0.45 × 4 ÷  9 = 0.2

Also the price of cranberry juice is $0.8 = $0.08 × 5 ÷ 9 = 0.04

SO, the price of one pint of the mixture is

= 0.2 + 0.04

= $0.24

Answer:

$0.24444

Step-by-step explanation:

GUYS HELP HELP HELP PLEASE HELP

Answers

i think it’s impossible and yeah that’s all ik but fs impossible is part of it

Evaluate.0.2 power of 4 =

Answers

Answer:

0.0016

Step-by-step explanation:

The expression 0.2 by the power of 4  when evaluated has a value of 0.0016

How to evaluate the expression

From the question, we have the following parameters that can be used in our computation:

0.2 by the power of 4

Express as an equation

So, we have

0.2 by the power of 4 = 0.2⁴

When expanded, we have

0.2 by the power of 4 = 0.2 * 0.2 * 0.2 * 0.2

Evaluate the products

This gives

0.2 by the power of 4 = 0.0016

Hence, the solution is 0.0016

Read more about expression at

https://brainly.com/question/30492964

#SPJ6

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