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
andrey2020 [161]
3 years ago
12

A projector displays an image on a wall. the area(in square feet) of the rectangular projection can be represented by

Mathematics
1 answer:
andrew-mc [135]3 years ago
3 0

Answer:

The height of the projection will be (x - 5) feet.

Step-by-step explanation:

A projector displays an image on a wall. The area (in square feet) of the rectangular projection can be represented by (x² - 8x + 15).

Now to get the width and the height of the rectangular projection we have to factorize the expression (x² - 8x + 15).

Here, (x² - 8x + 15)

= x² - 3x - 5x + 15

= (x- 3)(x - 5)

Now, if the height of the projection is less than its width then, the height of the projection will be (x - 5) feet. (Answer)

You might be interested in
Please show work!!!!!!!!!!!!
Svetlanka [38]

Answer:

x = 7

Step-by-step explanation:

Notice that in the triangle, the angle is either known or in terms of x. This means we can make an equation: 82 + (9x - 6) + (6x - 1) = 180. Now, add up tthe terms to get 15x + 75 = 180, or 15x = 105 or x = 7.

5 0
3 years ago
Andrew
PilotLPTM [1.2K]
Let's say Bailey takes "b" days to paint it.

and Andrew takes "a" days to paint the same house.

now, Andrew is 6 times faster than Bailey, therefore, if Andrew takes "a" days to do it, Bailey takes then "6a" days, or b = 6a.

now, the year they worked together, they finished it in 7 days.

so, after 1 day then, they have only done 1/7 of the whole work.

and Andrew for one day, has done 1/a of the house, whilst Bailey has done 1/b of the house or 1/(6a).

\bf \stackrel{\textit{Andrew's rate}}{\cfrac{1}{a}}+\stackrel{\textit{Bailey's rate}}{\cfrac{1}{b}}=\stackrel{\textit{1 day of work}}{\cfrac{1}{7}}
\\\\\\
\cfrac{1}{a}+\cfrac{1}{6a}=\cfrac{1}{7}\impliedby 
\begin{array}{llll}
\textit{let's multiply all by }\stackrel{LCD}{42a}\textit{ to toss the}\\
denominators
\end{array}

\bf 42a\left( \cfrac{1}{a}+\cfrac{1}{6a} \right)=42a\left( \cfrac{1}{7} \right)\implies 42+7=6a\implies \cfrac{49}{6}=a
\\\\\\
\stackrel{days}{8\frac{1}{6}}=a
\\\\\\
\textit{how many days will it take Bailey then?}\quad b=6a
\\\\\\
b=6\cdot \cfrac{49}{6}\implies b=\stackrel{days}{49}
6 0
4 years ago
A commercial aircraft gets the best fuel efficiency if it operates at a minimum altitude of 29,000 feet and a maximum altitude o
Semenov [28]

Answer:

A

Step-by-step explanation:

A is correct because if the minimum is 29,000 feet, x (the airplane altitutude) must be greater than or equal to 29,000 ft. Since the maximum is 41,000 feet, x must be less than or equal to that number.

6 0
3 years ago
how do you know what order to put the letters of a similarity statement in? ex. WZYX ~ ABCD (why would they be stated this way)
Nimfa-mama [501]
The order should be that of the corresponding equal angles 
For example 2 triangles ABC and XYZ where <A=X,  <B=Y and <C = < Z.
8 0
3 years ago
Simplify the following equation.<br> y-3=5/7(x-14)<br> im desperate
Ivanshal [37]

Answer:

5x/7-7

Step-by-step explanation:

your welcome , tell me if I'm wrong

4 0
3 years ago
Other questions:
  • Jessica owns a base salary of $150 every week with an additional 40% commission on everything she sells if Jessica is sold $1650
    9·1 answer
  • What’s the answer for -3(r-4)_&gt;0
    8·1 answer
  • The area of a desk top is 8 ¾ square feet. If the length is 3 ½ft., find the width.
    11·1 answer
  • 291.87 irrational or rational
    5·1 answer
  • Aviv cut out the ads on 5 pages of a newspaper. He discovered that when he put the ads together, they filled 1/3 pages. How many
    10·1 answer
  • Shanice wanted to make note cards by
    11·1 answer
  • 4-3+2(x-1) if x = 1<br>Help me plzzzz
    15·1 answer
  • A sample space for the experiment is {A, B, C, D, E, F, G}. Let W represent the event “the card is white”, let S represent “the
    13·1 answer
  • Can someone please answer this
    13·2 answers
  • Find the length of side b below using Law of Sines. Give the exact value as an expression and an approximation to the nearest te
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!