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
JulsSmile [24]
3 years ago
6

the width of a rectangle is 7 cm less than twice its length. its area is 30 square cm. find the dimensions

Mathematics
1 answer:
spayn [35]3 years ago
5 0

Answer:

l = 6 cm

w = 5 cm

Step-by-step explanation:

l(2l - 7) = 30

2l^2 - 7l - 30

(2l + 5)(l - 6)

l = 6

2(6) - 7 = 5

You might be interested in
HELP!!! URGENT!!! I WILL GIVE BRAINLEIST THING ​
lisov135 [29]

Answer:

Horizontal distance = 0 m and 6 m

Step-by-step explanation:

Height of a rider in a roller coaster has been defined by the equation,

y = \frac{1}{3}x^{2}-2x+8

Here x = rider's horizontal distance from the start of the ride

i). y=\frac{1}{3}x^{2}-2x+8

      =\frac{1}{3}(x^{2}-6x+24)

      =\frac{1}{3}[x^{2}-2(3x)+9-9+24]

      =\frac{1}{3}[(x^{2}-2(3x)+9)+15]

      =\frac{1}{3}[(x-3)^2+15]

      =\frac{1}{3}(x-3)^2+5

ii). Since, the parabolic graph for the given equation opens upwards,

    Vertex of the parabola will be the lowest point of the rider on the roller coaster.

    From the equation,

    Vertex → (3, 5)

    Therefore, minimum height of the rider will be the y-coordinate of the vertex.

    Minimum height of the rider = 5 m

iii). If h = 8 m,

    8=\frac{1}{3}(x-3)^2+5

    3=\frac{1}{3}(x-3)^2

    (x - 3)² = 9

    x = 3 ± 3

    x = 0, 6 m

    Therefore, at 8 m height of the roller coaster, horizontal distance of the rider will be x = 0 and 6 m

6 0
2 years ago
Help please ASAP <br> It’s for math!!
insens350 [35]

Answer:

a or c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
PLEASE HELP!!! Write an equation for the following scenario.
alexandr402 [8]

Answer:2n + 8 = n-3

Step-by-step explanation:

7 0
3 years ago
A linear equation exists for the following sets of ordered pairs: {(-1, 1), (0, 3), (-1/3, 7/3)}. The rule for the linear equati
kaheart [24]

Answer:

Part 1) y=2x+3

Part 2) The equation satisfy the set of coordinates (see the explanation)

Step-by-step explanation:

step 1

Find the linear equation

The rule for the linear equation states that y is three more than twice x.

so

The variable y is equal to the number 2 multiplied by x plus the number 3

y=2x+3

step 2

Prove that the equation satisfies the set of coordinates

substitute the value of x and the value of y in the linear equation and then compare the results

a) (-1, 1)

1=2(-1)+3

1=1 ----> is true

so

The equation satisfy the ordered pair

b) (0, 3)

3=2(0)+3

3=3 ----> is true

so

The equation satisfy the ordered pair

c) (-1/3,7/3)

7/3=2(-1/3)+3

7/3=7/3 ----> is true

so

The equation satisfy the ordered pair

therefore

The equation satisfy the set of coordinates

4 0
3 years ago
A rectangle has a length of 4 inches and a width of x inches the value of the perimeter of the rectangle is equal to the value o
Elina [12.6K]
X=4 inches
4+4+x+x=4x
8+2x=4x
8=2x
x=4
4 0
3 years ago
Other questions:
  • Solve the following equation algebraically. Represent your answer in simplest radical form, if necessary.
    10·1 answer
  • Please help with Math questions!
    10·1 answer
  • -1/3(6x-15)+6x&gt;8x-11 solve.
    12·1 answer
  • Partial product of 1,262×3
    5·1 answer
  • Please Help I'll choose the first answer Brainliest ​
    11·2 answers
  • Marci has45 red buttns and 60 yellow butto a she wants to use all of the butt s a d divide each color equally into boxes what is
    15·1 answer
  • Pls answer this question
    10·1 answer
  • A skull cleaning factory cleans animal skulls and other types of animals using flesh eating Beatles. The factory owner started w
    5·1 answer
  • a long board 4.7 thick is cut into three pieces of equal length these three pieces are then stacked the stack is cut in three eq
    5·1 answer
  • Allie worked for 1/2 hour on Saturday and 2/3 hour on Sunday.What are four common denominators for the fractions?Explain your re
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!