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3 years ago

The width of a rectang:a is half of its length. If the length is 8 cm, what is

Mathematics

1 answer:

9966 [12]3 years ago

6 0

Answer:24cm

Step-by-step explanation:

if there is 2 sides with the same like the length is 8 and 2 sides(8*2)=16

and the width is half (8/2) =4 double for 2 sides (4*2) = 8

8+16

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Find the missing length

antoniya [11.8K]

117 (if you put the answer in the green box)

9^2 = 81 , 6^2=36
81+36 = 117

Otherwise 10.82 if this is to the nearest hundredth

3 0

2 years ago

What is the axis of symmetry for f(x) = -3x2 + 18 - 7

solong [7]

The vertex form:

$y=a(x-h)^2+k\\\\(h,\ k)-vertex$

The axis of symetry is x = h.

$y=ax^2+bx+c\to h=\dfrac{-b}{2a}$

We have

$f(x)=-3x^2+18x-7\to a=-3,\ b=18,\ c=-7$

Substitute:

$h=\dfrac{-18}{(2)(-3)}=\dfrac{-18}{-6}=3$

<h3>Answer: x = 3</h3>

6 0

3 years ago

Urgent help please . it’s important and i’m stuck

Nina [5.8K]

Answer: The image wont lode, sorry.

Step-by-step explanation:

5 0

2 years ago

HELP...The volume of a rectangular prism is 36x^6y^8. The length of the prism is 4x^3y^5, and the width of the prism is 3xy^2. W

Margaret [11]

Answer:

$H = 3x^2y$

Step-by-step explanation:

Given

$V = 36x&^6y^8$

$L = 4x^3y^5$

$W = 3xy^2$

Required

Find the height of the prism

Volume (V) is calculated as:

$V =LWH$

Substitute values for V, L and W

$36x^6y^8 =4x^3y^5 * 3xy^2 * H$

Make H the subject

$H = \frac{36x^6y^8}{4x^3y^5 * 3xy^2}$

$H = \frac{36x^6y^8}{4*3x^3*x*y^5y^2}$

$H = \frac{36x^6y^8}{12x^4*y^7}$

Divide:

$H = 3x^{6-4}y^{8-7}$

$H = 3x^2y$

The height of the prism is: $3x^2y$

4 0

2 years ago

Kobe,A'mari and DJ are raising money for the football team to take a trip to San Diego.Kobe collected $24.55 more than A‘Mari, A

MrMuchimi

Answer:

DJ collected $39.6

Step-by-step explanation:

Kobe,A'mari and DJ are raising money for the football team to take a trip to San Diego.

Let k = amount which Kobe collected

Let a = amount which Amari collected

Let d= amount which Dj collected.

Kobe collected $24.55 more than A‘Mari. This means

k= a + 24.55 - - - - - - 1

DJ collected $15.60 less than Kobe

d = k-15.60 - - -- - - - - 2

Altogether the three boys collected $125.40. This means

k + d + a = 125.40- -- - -- - -3

Put k = a + 24.55 in equation 3 and k= d+15.60 in equation 3 too

a + 24.55+ d + a= 125.40

2a + d = 125.40 - 24.55= 100.85

2a+d = 100.85- - - - - - -4

d + 15.60+d + a= 125.40

2d + a = 125.40-15.60= 109.8

a + 2d = 109.8- - - - - - -5

Multiply equation 4 by 1 and equation 5 by 2

2a+d = 100.85

2a+ 4d = 219.6

Subtracting

-3d = -118.75

d =118.75/3= 39.6

Put d = 39.6 in equation 5

a = 109.8- 2×39.6= 30.6

Substitute a = 30.6 in equation 1

k = 30.6 + 24.55 = 55.15

So DJ collected $39.6

4 0

3 years ago