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
11Alexandr11 [23.1K]
3 years ago
12

Pls help this is urgent I'll give anyone who answers brainiest answer​

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0

e

Cross multiply,

4(x+1) = -3(2x-1)

4x+ 4 =- 6x + 3

10x = -1

x = -1/10

Answer: -1/10

f

3(1-2x)  = 4(5-x)

3 - 6x = 20 - 4x

-17 = 2x

x = -17/2

Answer: -17/2

You might be interested in
Use the arc length formula to find the length of the curve y = 4x − 5, −1 ≤ x ≤ 2. check your answer by noting that the curve is
professor190 [17]
Ok, here we go.  Pay attention.  The formula for the arc length is AL= \int\limits^b_a { \sqrt{1+( \frac{dy}{dx})^2 } } \, dx.  That means that to use that formula we have to find the derivative of the function and square it.  Our function is y = 4x-5, so y'=4.  Our formula now, filled in accordingly, is AL= \int\limits^2_1 { \sqrt{1+4^2} } \, dx (that 1 is supposed to be negative; not sure if it is til I post the final answer).  After the simplification we have the integral from -1 to 2 of \sqrt{17}.  Integrating that we have AL= \sqrt{17}x from -1 to 2.  2 \sqrt{17}-(-1 \sqrt{17} ) gives us 3 \sqrt{17}.  Now we need to do the distance formula with this.  But we need 2 coordinates for that.  Our bounds are x=-1 and x=2.  We will fill those x values in to the function and solve for y.  When x = -1, y=4(-1)-5 and y = -9.  So the point is (-1, -9).  Doing the same with x = 2, y=4(2)-5 and y = 3.  So the point is (2, 3).  Use those in the distance formula accordingly: d= \sqrt{(2-(-1))^2+(3-(-9))^2} which simplifies to d= \sqrt{9+144}= \sqrt{153}.  The square root of 153 can be simplified into the square root of 9*17.  Pulling out the perfect square of 9 as a 3 leaves us with 3 \sqrt{17}.  And there you go!
5 0
3 years ago
(8,9,2 )(3,5,7)(1,3,3)(5,3,2) which does not make up a triangle
OLga [1]
Most likely you are expected to recognize that side lengths 2, 3, 5 will result in a "triangle" of zero area (looks like a line segment).

The appropriate choice is 
   (5, 3, 2)

_____
Some authors write the triangle inequality as a + b ≥ c for any assignment of a, b, c to side lengths. The "or equal to ..." allows the triangle to have zero area (looks like a line segment). Other authors insist the inequality not include the "or equal to" case. It looks like your text's author is in the latter camp.
4 0
3 years ago
A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len
Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

Area = 135yd^2

L=3W - 12

Required

Determine the length of the rectangle:

Area is calculated as thus:

Area = L * W

Substitute 3W - 12 for L and 135 for Area

135= (3W - 12) * W

135= 3W^2 - 12W

Reorder:

3W^2 - 12W - 135= 0

Divide through by 3

W^2 - 4W - 45 = 0

Expand:

W^2  - 9W + 5W - 45 = 0

W(W  - 9) + 5(W - 9) = 0

(W + 5)(W-9) = 0

W + 5 = 0 or W - 9 = 0

W = -5 or W = 9

But width can't be negative

So:

W = 9

Recall that: L=3W - 12

L = 3 * 9 - 12

L = 15

<em>Hence, the length 15 yards</em>

4 0
3 years ago
An animal shelter has 45 cats, 10 dogs and 5 rabbits. the shelter published the ratio of cats to dogs in its latest newsletter .
timurjin [86]
Ratio : cats:dogs 45:10
6 0
3 years ago
Help help please will give brainliest PLEASE DON'T ANSWER IF YOU DON'T KNOW THE ANSWER​
sergey [27]

Answer:

0 is the answer. I think.

5 0
3 years ago
Other questions:
  • Is the simplified form of 2√3 - 2√3 rational?
    12·1 answer
  • use the change of base formula to evaluate log[3](58). then convert log[3](58) to a logarithm in base 4?
    5·1 answer
  • Can you help me with numbers 20-22 please a lot of points
    5·1 answer
  • What are the coordinates of the vertex of the parabola with the equation y = x2 + 2x – 3?
    8·2 answers
  • Solve the system of equations by substitution y=5x-13 and 5x+2y=19
    8·1 answer
  • What’s the answer???(SOMEONE PLEASE HELP)
    8·2 answers
  • Is -7 + 9= 9 + 7 true, false or open
    8·2 answers
  • A delivery truck traveled 1/4 of its route in 2 hour how long will it take to complete one route
    13·1 answer
  • L
    15·2 answers
  • What is the volume of the cylinder below?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!