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
Allushta [10]
3 years ago
7

When A=300, solve the equation x^2 - 40x + A = 0 by factorising​

Mathematics
1 answer:
Svet_ta [14]3 years ago
3 0

Answer :

\:

(x–30) (x-10)

Given equation :

• x² - 40x + A

when A = 300

1. Use the sum-product pattern

x²- 40x + 300

x²−10x−30x+300

2. Common factor from the two pairs

x² – 10x-30x+300

x(x−10)−30(x−10)

3. Rewrite in factored form

x(x−10)−30(x−10)

(x-30) (x-10)

You might be interested in
Please help with this. I only need help with the first question I have the second one figured out,
lutik1710 [3]

Answer:

m∠WZX = 41°

Step-by-step explanation:

diagonals bisect angles and opposite angles are congruent

therefore, ∠WXY ≅ ∠WZY

∠WZY must equal [360 - 2(68)] ÷ 2 which equals 112°

If ∠WXZ = 71° then so does ∠XZY

Which means that ∠WZX must equal 112-71 which is 41°

6 0
3 years ago
Read 2 more answers
Variable y varies directly with variable x, and y = 45 when x = 9.
Alenkasestr [34]
Direct variation means their ratio is a constant
x/y is 9/45=1/5
so when x=2, y=5*2=10
4 0
3 years ago
If Luke can now mow 10 yards in 5 hours, how many lawns can he mow in 8 hours?
jeka94

Answer:

Step-by-step explanation:

10 yards in 5 hours is 2 yards an hour

8*2=16 yards in 8 hours

6 0
3 years ago
Read 2 more answers
Four horses ran in a race
irina [24]

Answer:

  Dee won

Step-by-step explanation:

Using < to mean "finished ahead of ", we are given ...

  B = 3

  D < B

  D < C

  A < C

  D < A

Dee finished ahead of Air, Bart, and Caper, so Dee won the race.

_____

The order of finish must be D, A, B, C.

3 0
4 years ago
Answer this question​
Stells [14]

Answer:

\huge\boxed{width=12cm}

Step-by-step explanation:

l-length\\w-width\\P-perimeter

The formula of perimeter of the rectangle:

P=2l+2w=2(l+w)

Substitute:

l=6w\\\\P=168cm

168=2(6w+w)\\168=2(7w)\\168=14w\qquad|\text{divide both sides by 14}\\\\\dfrac{168}{14}=\dfrac{14w}{14}\\\\12=w\Rightarrow w=12(cm)

3 0
3 years ago
Other questions:
  • Diana invested $3000 in a saving account for 3 years. she earned $450 in interest over the time period. what interest rate did s
    5·2 answers
  • Leslie and Daniel plan to put an above-ground pool in the backyard of their new home. The backyard is rectangular, 30 feet by 50
    7·1 answer
  • Which equation demonstrates the distributive property?
    13·2 answers
  • Suppose Aldo borrows $5500 at an interest rate of 9% compounded each year assume that no payments are made on the loan how much
    5·1 answer
  • Amy has 20 coins in her bank. The coins are all dimes and quarters. The total amount of money in her bank is $4.25 how many of e
    9·1 answer
  • Can someone please help?
    15·1 answer
  • Hi can someone please answer this question? <br><br> Thank you :)
    12·1 answer
  • What is half of a teaspoon of vanilla
    8·1 answer
  • Which linear inequality is graphed with y &gt;x-2 to
    14·1 answer
  • At the end of a snow storm, Riley saw there was a lot of snow on her front lawn. The temperature increased and the snow began to
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!