1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svp [43]
3 years ago
10

Kathi and Robert

Mathematics
1 answer:
Ad libitum [116K]3 years ago
4 0

10.5x + 3y = 811.5

x + y = 97

y = 97 - x

3y = 291 - 3x

7.5x + 291 = 811.5

7.5x = 811.5 - 291

x = 520.5 / 7.5

x = 69.4

69 were sold at the original price

You might be interested in
5 } After a dilation with center (0,0), the image of DB is D'B'. I DB = 4.5 and D'B' = 18, the scale factor of this dilation is
Maru [420]

Explanation:

The scale factor must be greater than 1 because the image of the segment is larger than the original segment.

To find the scale factor we just have to divide the length of the image by the length of the segment:

\frac{18}{4.5}=4

Answer:

(4) 4

4 0
2 years ago
What would be the best unit to measure a river?
Tatiana [17]

It's meters.          Fgfgfggfgffgfgfgmndmxbmkkdckcc

6 0
4 years ago
Read 2 more answers
Julia and Rasheed are mixing yellow paint and blue paint to make green paint. The mixture needs to be 60% blue paint and 40% yel
statuscvo [17]

Answer:

They should use <u>1.2 gallons</u> of yellow paint.

Step-by-step explanation:

Given:

Julia and Rasheed are mixing yellow paint and blue paint to make green paint.

The mixture needs to be 60% blue paint and 40% yellow paint.

They need to make 3 gallons of the green paint.

Now, to find the quantity of yellow paint they should use.

As,

60% + 40% = 100%

So, we get the ratio of blue paint to yellow paint:

60:40

= \frac{60}{40}

= \frac{3}{2}

= 3:2.

Thus, the ratio of blue paint : yellow paint is 3:2.

<em>They need to make total 3 gallons of green paint.</em>

Now, to get the quantity of yellow paint:

\frac{2}{5}\ of\ 3\ gallons

=\frac{2}{5} \times 3

=\frac{6}{5}

=1.2\ gallons.

Therefore, they should use 1.2 gallons of yellow paint.

8 0
4 years ago
Which statement is true?
julsineya [31]
The answer I believe is 6 for the kids in the back
8 0
3 years ago
A tree outside Ellie's house casts a 125-foot shadow. At the same time of the day, Ellie casts a 5.5-foot shadow. If Ellie is 4
Veronika [31]

Answer:

The tall of the tree is about 109.85 feet

Step-by-step explanation:

* Lets study the situation in the problem

- The tree and its shadow formed a right angle triangle with legs

  x the tall of the tree and 125 feet the shadow of the tree

- Ellie and her shadow formed a right triangle with legs 4 feet and

 10 inches the tall of Ellie and 5.5 feet the shadow of Ellie

- The two triangles are similar

- There is an equal ratio between the corresponding sides of the

 similar triangles

# Ex: If triangles ABC and XYZ are similar

∴ AB/XY = BC/YZ = AC/XZ

* Lets use this rule to solve the problem

∵ The tall of the tree is x

∵ The tall of Ellie is 4 feet and 10 inches

- Lets change the tall of Ellie to feet only

∵ 1 foot = 12 inches

∴ 10 inches = 10/12 = 5/6 foot

∴ The tall of Ellie is 4 feet and 5/6 foot = 4 + 5/6 = 29/6 feet

∵ The shadow of the tree is 125 feet

∵ The shadow of Ellie is 5.5 feet

- By using similarity ratio

∴ Tall of tree/tall of Ellie = shadow of tree/shadow of Ellie

∴ x/(29/6) = 125/5.5 ⇒ using cross multiplication

∴ 5.5(x) = 125(29/6) ⇒ divide both sides by 5.5

∴ x ≅ 109.85 feet

* The tall of the tree is about 109.85 feet

8 0
3 years ago
Other questions:
  • -6u-6y=66<br> 2v+4y=-32<br> v=. Y=
    14·1 answer
  • What is the vertex of g(x) = 8x2 - 48x + 65?<br> O (-3,-7)<br> O (3.-7)<br> O (24,-7)<br> O (-24,-7)
    15·2 answers
  • Used Cartesian coordinate system to plot the following points
    9·1 answer
  • Omar the trainer has two solo workout plans that he offers his clients: Plan A and Plan B. Each client does either one or the ot
    5·1 answer
  • Write an equation of a line with an undefined slope and passing through the point (-2,4). . Hint: To answer this question, consi
    11·1 answer
  • Can someone help me hurry?
    15·1 answer
  • Please please need help on this been trying
    5·1 answer
  • 7<br> 45°<br> X<br> Find the value of x . Write your answer in simplest form.
    14·1 answer
  • Please help I have to get it done but I don't understand how to solve it still
    8·2 answers
  • Find the coordinates of A if M(6, -1) is the midpoint of AB, and B has the coordinates (8, -7
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!