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
tekilochka [14]
3 years ago
15

How to factorise

TexFormula1" title=" {8x}^{2} - xy - {7y}^{2} " alt=" {8x}^{2} - xy - {7y}^{2} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
kenny6666 [7]3 years ago
4 0
(8x+7y)(x-y) is the answer.
You might be interested in
In a sewage treatment plant, a large concrete tank initially contains 440,000 liters of liquid and 10,000 kg of fine suspended s
viva [34]

Answer:

Concentration = 8.26kg/m^3

Step-by-step explanation:

Given

  V = 440000L --- volume of tank

m = 10,000 kg --- solid mass

r = 40000L/hr --- outflow rate  

Required

Determine the concentration at the end of 4 hours

First, calculate the amount of liquid that has been replaced at the end of the 4 hours.

Amount = r * Time

Amount = 40000L/hr * 4hr

Amount = 40000L * 4

Amount = 160000L

This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced

Calculate the ratio of the liquid replaced.

Ratio = \frac{Amount}{Volume}

Ratio = \frac{160000L}{440000L}

Ratio = \frac{16}{44}

Ratio = \frac{4}{11}

Next, calculate the amount of solid left.

Amount (Solid)= Ratio * m

Amount (Solid)= \frac{4}{11} * 10000kg

Amount (Solid)= \frac{40000}{11}kg

Amount (Solid)= 3636kg

Lastly, the concentration is calculated as:

Concentration = \frac{Amount (Solid)}{Volume}

Concentration = \frac{3636kg}{440000L}

Convert L to cubic meters

Concentration = \frac{3636kg}{440000* 0.001m^3}

Concentration = \frac{3636kg}{440m^3}

Concentration = 8.26kg/m^3

3 0
2 years ago
if 1/3 of a can of frosting covers 1/6 of the top of the birthday cake how much frosting is needed to cover the entire top of th
ra1l [238]
2 cans
Hope it Helped!!!
6 0
3 years ago
Read 2 more answers
Solve x^2-8x+14=2x+7
LuckyWell [14K]

Answer:

Step-by-step explanation:

x²-8x+ 14 =2x+7

x² - 8x +14 - 2x - 7 = 0

x² - 10x  + 7 = 0

5 0
3 years ago
In 2020, there were about 260 million gas powered cars on the road. This number isexpected to decrease at a rate of 1.1% per yea
Amanda [17]

This is an equation of exponential decay

y(t) = a b^ t where a is the initial amount

b is the decay factor

t is the time in years

b is found by taking 1 and subtracting the percent it decreases in decimal form

Letting t =4

y(t) = 260 million * ( 1- .011) ^ 4

=248.7473796 million

=24874737.96

Rounding to a whole number

= 24874738

6 0
11 months ago
What is the sum of the 9th square number and the 3rd cube number?
Lesechka [4]
The sum of the 9th square number and 3rd cube number is 108
7 0
2 years ago
Read 2 more answers
Other questions:
  • The staff at a company went from 40 to 29 employees. what is the percent decrease in staff
    8·1 answer
  • Show (prove) in detail why (2.3.7)4 = 24 34 74.
    11·1 answer
  • Consider the following statements. Select all that are always true.
    15·2 answers
  • 9. Based on the patterns observed in Exercises 5–8, describe a general formula that can be used to find the number of permutatio
    11·1 answer
  • Eya is 7 less than threee times bills age.if eya is 17 how old is bill
    15·2 answers
  • Expanded form for 23.5
    15·2 answers
  • Dadas as coordenadas dos vértices de uma triângulo ABC, em que A=(1; 1), B=(4; 1)
    5·1 answer
  • Are the following functions linear or nonlinear?
    11·1 answer
  • Consider the system of inequalities and its graph.
    8·2 answers
  • -19x-17 = -93 <br> Also when you solve it has to be with the addition property of equality
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!