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
luda_lava [24]
2 years ago
13

In the equation 9x2 - 4 = (px - t)(px + t), p and t are constants. What is the value of p + t?

Mathematics
1 answer:
Alexxx [7]2 years ago
4 0

Answer: 2

Step-by-step explanation:

You might be interested in
Now there is a square city of unknown size with a gate at the center of each side. There is a tree 20 b from the north gate. Tha
Brums [2.3K]

Answer:

The length of each side of the city is 250b

Step-by-step explanation:

Given

a = 20 --- tree distance from north gate

b =14 --- movement from south gate

c = 1775 --- movement in west direction from (b)

See attachment for illustration

Required

Find x

To do this, we have:

\triangle ADE \sim \triangle ACB --- similar triangles

So, we have the following equivalent ratios

AE:DE = AB:CB

Where:

AE = 20\\ DE = x/2 \\ AB = 20 + x + 14 \\ CB = 1775

Substitute these in the above equation

20:x/2 = 20 + x + 14: 1775

20:x/2 = x + 34: 1775

Express as fraction

\frac{20}{x/2} = \frac{x + 34}{1775}

\frac{40}{x} = \frac{x + 34}{1775}

Cross multiply

x *(x + 34) = 1775 * 40

Open bracket

x^2 + 34x = 71000

Rewrite as:

x^2 + 34x - 71000 = 0

Expand

x^2 + 284x -250x - 71000 = 0

Factorize

x(x + 284) -250(x + 284)= 0

Factor out x + 284

(x - 250)(x + 284)= 0

Split

x - 250 = 0 \ or\ x + 284= 0

Solve for x

x = 250 \ or\ x =- 284

x can't be negative;

So:

x = 250

6 0
3 years ago
Solve q-7 5/6=6 1/2 pllllleeeaassee
maw [93]
Q - 7 5/6 = 6 1/2
q = 6 1/2 + 7 5/6
q = 13/2 + 47/6 / multiply 13/2 by 3
q = 39/6 + 47/6
q = 86/6
8 0
3 years ago
Read 2 more answers
What is 5/12 times 6 in multiply fractions with whole numbers
KiRa [710]
5/12*6  =5/12*6/1 crosscancle you get 5/2 the you get 2 1/2
3 0
3 years ago
Y=x-10 as coordinatornets
natima [27]

Answer:

x=10, y=-10

Step-by-step explanation:

4 0
2 years ago
3x + 5 = x - 3<br> whats the answer?
tester [92]

Hello!

Here are the steps to your problem:

3x + 5 = x - 3

3x -x = -3 -5

2x = -8

x = -4

I hope this helps you! Have a lovely day!

-Mal

5 0
3 years ago
Read 2 more answers
Other questions:
  • To choose a mascot for a new middle school, 8th-grade students were polled, and their top choice was selected as the mascot. Was
    8·2 answers
  • A survey reported that 5% of Americans are afraid of being alone in a house at night. If a random sample of 20 Americans is sele
    14·1 answer
  • 36 is 9% of what number
    10·2 answers
  • If sin(x) = 0 and cos(x) = 1, what is cot(x)?
    6·2 answers
  • I NEED HELP BADLYYYYYYYY PLEASE HELPPPPPPPPPPPPPPPPPPPPp
    15·1 answer
  • Me. James wants to divide 2 hours of computer time equally among 10 students. What fraction of computer time will each student g
    12·2 answers
  • A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample
    5·1 answer
  • HELP ME!!!!!! Correct answers only!!!!!
    14·2 answers
  • Jessica earned $16 mowing a neighbor's yard. She bought a craft kit for $7.37. She used $3.75 to buy food for a food drive. She
    7·2 answers
  • Use the area of a rectangle and the Distributive<br> Property to find each product.<br> 9 X 34
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!