8 Black pencils cost 15e cach and coloured
pencils cost 2lc cach. Ir 24 pencils cost
$4,02, how many of them were black (Hint
let there be + black pencils. Thus there are
24 – x coloured pencils. Work in cents.)
of

Answer:

1/2

Step-by-step explanation:

Tree grow 2 inches per month

Let :

Month = m ; height increase, h

m α h

m = kh

k = proportionality constant

Where ; m = 1 ; h = 2

1 = 2k

1/2 = 2k/ 2

k = 1/2

Answer:1/2

Step-by-step explanation:

Tree grow 2 inches per month

Let :

Month = m ; height increase, h

m α h

m = kh

k = proportionality constant

Where ; m = 1 ; h = 2

1 = 2k

1/2 = 2k/ 2

k = 1/2

Answer:

A

Step-by-step explanation:

∆ABC is similar to ∆DEF if and only if the ratio of their corresponding side lengths are the same.

Let's find out:

DE/AB = 10/5 = 2

EF/BC = 8/4 = 2

FD/CA = 12/6 = 2

The ratio of their corresponding side lengths are equal, therefore, ∆ABC is similar to ∆DEF based on the SSS Similarity Theorem.

9514 1404 393

Answer:

  10°, 80°

Step-by-step explanation:

Setup

Let x and y represent the measures of the two acute angles in the right triangle.

From your knowledge of right triangles, you know the two acute angles are complementary:

  x + y = 90

The problem statement gives you another relation:

  x = 2(y + 30) . . . . twice the sum ...

__

Solution

The second equation gives you an expression for x that can be substituted into the first equation.

  (2(y +30)) + y = 90

  3y +60 = 90 . . . . . . . . collect terms

  3y = 30 . . . . . . . . . subtract 60

  y = 10 . . . . . . . . divide by 3

  x = 2(y +30) = 2(40) = 80

The two angles are 10° and 80°.

Answer:

JL = 12.5

Step-by-step explanation:

[tex] In\: \triangle JKL, KM\perp JL[/tex]

Therefore, by geometric mean property:

[tex] KM^2 = JM\times ML[/tex]

[tex] 6^2 = 8\times ML[/tex]

[tex] 36 = 8\times ML[/tex]

[tex] \frac{36}{8} = ML[/tex]

[tex]ML= 4.5 [/tex]

JL = JM +ML

JL = 8 + 4.5

JL = 12.5

Answer:

35.19

Step-by-step explanation:

equation is : C=2πr

[tex] \Large \underline{\tt Given} :[/tex]

[tex] \\ [/tex]

[tex] \Large \underline{\tt To \: Find} :[/tex]

[tex] \\ [/tex]

[tex] \Large \underline{\tt Solution} :[/tex]

As, we have diameter of circle is 5.6 cm and radius is half of diameter.

[tex] \tt : \implies Radius, r = \dfrac{d}{2}[/tex]

[tex] \tt : \implies Radius, r = \dfrac{5.6 \: cm}{2}[/tex]

[tex] \tt : \implies Radius, r = \dfrac{\cancel{56} \: cm}{10\times \cancel{2}}[/tex]

[tex] \tt : \implies Radius, r = \dfrac{28 \: cm}{10}[/tex]

[tex] \tt : \implies Radius, r = 2.8 \: cm[/tex]

[tex] \\ [/tex]

Now, for Circumference :

[tex] \Large \underline{\boxed{\bf{Circumference = 2\pi r}}}[/tex]

[tex] \tt : \implies Circumference = 2 \times \dfrac{22}{7} \times 2.8 \: cm[/tex]

[tex] \tt : \implies Circumference = \dfrac{44}{\cancel{7}} \times \dfrac{\cancel{28}}{10} \: cm[/tex]

[tex] \tt : \implies Circumference = 44 \times \dfrac{4}{10} \: cm[/tex]

[tex] \tt : \implies Circumference = \dfrac{176}{10}\: cm[/tex]

[tex] \tt : \implies Circumference = 17.6\: cm[/tex]

[tex] \\ [/tex]

Hence, circumference is 17.6 cm.

Answer:

-24k - 12

Step-by-step explanation:

6(-4k - 2)

-24k - 12

Answer: 36k

Step-by-step explanation: 6(-4k-2) The u disrtube the 6 into ach number in teh perenteces making 6x-4= -24 and 6x2=12 whichs changes the problem to -24-12 which is equal to 36k. Hope this helps :)

Both answers

Answer:

A=9mm

B= 293

Answer:

Please refer to the attachment

Answer:

sorry I'm here because I want points

Step-by-step explanation:

sorry

Answer:

375g

Step-by-step explanation:

250g = 4

X = 10

Cross Multiply

2500=4x

Divide both sides by x

x=625

1000-625

375g left

Answer:

B y=3/x From the given options option B is  showing  inverse variation between the variables x and y.

Answer:b

Step-by-step explanation:

Answer:

z+18

Plz give brainliest

Step-by-step explanation:

Answer:

z+18

Step-by-step explanation:

4z+9-3z+9

z+9+9

z+18

Answer:

1/4 or 1/24

Step-by-step explanation: I am not sure but try and if you get it rong I am sorry