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
Ostrovityanka [42]
3 years ago
6

4t2–40t+84 factorise quadratics

Mathematics
2 answers:
Evgen [1.6K]3 years ago
6 0

Answer:

4( t - 7) ( t - 3 )

Step-by-step explanation:

4t² - 40t + 84

4(t² - 10t + 21)

4( t - 7) ( t - 3 )

Viktor [21]3 years ago
5 0

Answer:

4(t − 3)(t − 7)

Step-by-step explanation:

4(t–3)(t–7)

4(t2–3t–7t+21)

You might be interested in
At the start of a mission, international spy James withdrew $5,000 in Cairo. In Istanbul, he withdrew half of the remaining mone
lord [1]

Answer:

Initial Amount at the start of the mission=\$20000

Step-by-step explanation:

Let initial amount=x

In Cario James withdrew \$5000.

Remaining Amount=x-5000

In Instanbul he with drew half of the remaining amount so half of the remaining amount will be left.

\frac{1}{2}\times(x-5000)=7500\\\\x-5000=15000\\\\x=20000

8 0
3 years ago
Is 5/100 a repeating decimal?
notka56 [123]

Answer:

no

Step-by-step explanation:

it is 0.05

3 0
3 years ago
Read 2 more answers
A powerful computer is purchased for $2000, but loses 20% of its value each year. How much will it be worth 4 years from now?
Jet001 [13]

Answer:

(A)Decay

(b)0.8

(c)First Term

(d)f(t)=2000(0.8)^t

(e)$819.20

Step-by-step explanation:

The exponential function for modelling growth or decay is given as:

A(t)=A_o(1\pm r)^t,

Where:

Plus indicates growth and minus indicates decay.

A_o$ is the Initial Value\\r is the growth/decay rate\\t is the time period

For a powerful computer that was purchased for $2000, but loses 20% of its value each year.

(a)Since it loses value, it is a decay.

(b)Multiplier

Its value decays by 20%.

Therefore, our multiplier(1-r) =(1-20&)=1-0.2

Multiplier =0.8

(c)$2000 is our First term (or Initial Value A_o)

(d)The function for this problem is therefore:

f(t)=f_o(1- r)^t\\f(t)=2000(1- 0.2)^t\\\\f(t)=2000(0.8)^t

(e)Since we require the worth of the computer after 4 years,

t=4 years

f(4)=2000(0.8)^4\\f(4)=\$819.20

6 0
3 years ago
a large drink costs 50 cents more than a small drink. write an expression for the total cost of 3 small drinks and 2 large drink
Shkiper50 [21]
Since a small drink is the cheapest, make the cost of a small drink=x. Since a large drink costs 50 cents more than a small drink, let a large drink=x+50. The total of the drinks is the sum of the individuals. Since the cost of a small drink is x, 3 drinks cost 3x. Since the cost of a large drink is x+50, the cost of 2 drinks is 2(x+50). The cost of all of the drinks together is 3x+2(x+50). Distribute the 2. 3x+2x+100. Combine like terms. 5x+100. This will give you your answer in cents. If you need an answer in dollars, you multiply that expression by 0.01.
5 0
3 years ago
When making sugar skulls we made 5 small ones for every 7 large ones we made. If we made 132 sugar skulls altogether, how many w
Zina [86]

Okay so first,

Confirm: Every time we have 7 large sugar skulls, that also makes 5 large sugar skulls. So if you have 132 <u>ALTOGETHER</u>, then you'd need to do some multiplication/division. First, divide 132 by 5, that equals 26 small sugar skulls. Lastly, 132 ÷ 7 = 18 large sugar skulls. So there are 26 small sugar skulls and 18 large sugar skulls.

(I hope that was right, I tried my best :)

4 0
3 years ago
Other questions:
  • There are 180 students in the gym for an assembly. if 5% of them are girls, how many girls are there
    11·2 answers
  • Find the distance between a(-3,1) and b(-5,5)
    10·2 answers
  • X+4y=8 and 3x+4y=0 find the slope-intercept form
    13·1 answer
  • If there are 180 members of the 8th-grade class, what percent preferred either the museum or the sports complex?
    7·2 answers
  • 45% of c is 90. <br> Find the value of c.
    15·1 answer
  • One will get the brainliest,Help me! to do this..i have been confused of this..please help
    8·1 answer
  • Use the diagram below to determine the height of the flagpole.
    9·1 answer
  • Please help! Find the value of x.
    11·2 answers
  • Three integers have a mean of 7, a median of 6 and a range of 13.<br><br> Find the three integers.
    15·1 answer
  • SAT Math Question
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!