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
Whitepunk [10]
3 years ago
11

What is 4x-8y=5 6x-12y=10

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
5 0
If it is a system of two unknowns:
1) 4x-8y=5 multiple by 3
2)6x-12y=10 multiple by -2
then
12x-24y=15
-12x+24y=-20
x and y equals 0, so
Answer: no solution
You might be interested in
Define the value of the expression 3^2 x 3^{-5}
Tanya [424]

Answer:

Between 0 and 1

Step-by-step explanation:

The given expresion is

{3}^{2} \times  {3}^{ - 5}

Recall that:

{a}^{m}  \times  {a}^{n}  =  {a}^{m + n}

We apply this property of exponents to get;

{3}^{2}  \times  {3}^{ - 5}  =  {3}^{2 +  - 5}  =  {3}^{ - 3}

We rewrite to obtain a positive index as:

{3}^{2}  \times  {3}^{ - 5}  =  \frac{1}{ {3}^{3} }  =  \frac{1}{27}

Therefore the value of the expression is between 0 and 1.

8 0
2 years ago
What are the next three terms in the sequence3,6,9,12,...?
Vinil7 [7]

Answer:

15, 18, 21

Step-by-step explanation:

3, 6, 9, 12, 15, 18, 21...

3 x 5 = 15

3 x 6 = 18

3 x 7 = 21

Hope this helps! :)

8 0
3 years ago
What is the slope of a line perpendicular to the line y= - 2/3x + 1
sesenic [268]
3/2 since perpendicular lines have opposite reciprocal slopes
7 0
2 years ago
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
A regression-based forecast has yielded a coefficient of correlation (r) equal to 0.754. What is the coefficient of determinatio
Andreyy89

Answer:

0.568516

Step-by-step explanation:

To find the the Coefficient of determination you simply square r.

Just make sure you have the original r value and not the rounded value.

0.754^2 = 0.568516

and then depending on how many decimals you need to round to...

6 0
2 years ago
Other questions:
  • Milan spent a total of $70 at the grocery store. Of this amount, he spent $63 on fruit. What percentage of the total did he spen
    10·2 answers
  • 1,2,3,4? Math help?
    5·1 answer
  • Find the number, 112/ 100 of it is 56
    6·1 answer
  • On the sharks dive team there are 3 drivers in third grade.there are 8 total drivers on the Team
    13·2 answers
  • 12 1/2 as a decimal .......................................................
    10·2 answers
  • 5×100+4×10+6×1+2×(110)+8×(11000)<br><br> What is the number written in standard form?
    14·1 answer
  • Algebra 1 IMPORTANT
    7·1 answer
  • Use the Distributive Property to find 2/5 × 10 2/3
    15·2 answers
  • General admission to the fair is $8.00, and rides cost $3.00 each.
    6·2 answers
  • Question 28 of 30Calculate the surface area in square feet of a box that measures 13 inches inlength, 11 inches in width, and 11
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!