Ali saved Rs. 36. .
He spent 3/4 of his saving on a toy car.
What is the price of the toy car?

Answer:

1) 21

2a) -23/30

2b) 6/55

Step-by-step explanation:

1) 3(x + 2) + 5x + 7

expand the brackets:

= 3x + 6 + 5x + 7

collect like terms:

= 8x + 13

when x = 1, (just substitute 1 for x)

8(1) + 13

= 8 + 13

= 21

2a)

-9/10 + 2/15

put both fractions on the same denominator (often we can just multiply each denominator by the other one):

so -9/10 * 15/15

= -135/150

and 2/15 * 10/10

= 20/150

now they're both on the same denominator and we can add the numerators:

-135 + 20 = -115

so our answer is:

-115/150

which we can simplify to:

-23/30

2b)

3/11*2/5

Multiplying fractions is very simple, as it doesn't require to have the same denominators. We can just multiply the numerators by each other and same for the denominators:

3*2 = 6

11*5 = 55

therefore, our answer is:

6/55

A)

3(x+2) + 5x + 7

3x + 6 + 5x + 7

3x + 5x + 6 + 7

put x = 1

3(1) + 5(1) + 6 + 7

3 + 5 + 6 + 7

21

B)

a)

[tex]\sf \rightarrow -\dfrac{9}{10} + \dfrac{2}{15}[/tex]

[tex]\sf \rightarrow -\dfrac{9(15)}{150} + \dfrac{2(10)}{150}[/tex]

[tex]\sf \rightarrow -\dfrac{135}{150} + \dfrac{20}{150}[/tex]

[tex]\sf \rightarrow \dfrac{-135+20}{150}[/tex]

[tex]\sf \rightarrow \dfrac{-115}{150}[/tex]

[tex]\sf \rightarrow \dfrac{-23}{30}[/tex]

b)

[tex]\sf \rightarrow \dfrac{3}{11} \ * \ \dfrac{2}{5}[/tex]

[tex]\sf \rightarrow \dfrac{3*2}{11 *5}[/tex]

[tex]\sf \rightarrow \dfrac{6}{55}[/tex]

[tex]\qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}x~\hfill } \\\\ \textit{\underline{x} varies directly with }\underline{z^5}\qquad \qquad \stackrel{\textit{constant of variation}}{x=\stackrel{\downarrow }{k}z^5~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}[/tex]

[tex]\stackrel{\textit{"y" varies directly with "x"}}{y=kx}\qquad \qquad \textit{we also know that} \begin{cases} y=-8\\ x = 4 \end{cases}\implies -8=k(4) \\\\\\ \cfrac{-8}{4}=k\implies -2=k ~\hfill therefore~\hspace{10em}\boxed{y=-2x} \\\\\\ \textit{when x = -4 what is "y"?}\qquad y=-2(-4)\implies y=8[/tex]

Answer:

y=8

Step-by-step explanation:

I didn't need a equation if they vary directly with each other then if the sign switches from 4 to -4 then -8 must have switched to 8

Answer:

1.10

Step-by-step explanation:

1.79

0.67

1.12 rounded is 1.10 to the nearest tenth

Answer:

A. f = 400 + 50d

Step-by-step explanation:

First, let's understand each quantity/variable.

Now that we understand these variables, we can conclude that the equation would be A. f = 400 + 50d because to find the total, we have to add the 400 eyeliners sold at the beginning to the 50 eyeliner sales per day.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

Answer:

2.25

Step-by-step explanation:

Notice how the common ratio is -1/3, which means the series passes part 1 of the convergence test because -1/3 is in between -1 and 1.

We can also represent this as a summation series of

[tex]Σ3( - \frac{1}{3} ) {}^{n - 1} [/tex]

Since we can represent this a summation series, we can use that convergent value is equal to

[tex] \frac{a _{1} }{1 - r} [/tex]

where a1 is initial term and r is common ratio.

R is -1/3

A1 is 3.

[tex] \frac{3}{1 - \frac{ - 1}{3} } = \frac{3}{ \frac{4}{3} } = 2.25[/tex]

So the answer is 2.25

Answer:

Your answer would be V≈392.7cm³

Step-by-step explanation:

You get this because

Radius= 5cm

Height=15cm

so, V=πr2h

3=π·52·15

3≈392.69908cm³

Hope this helps :).

Answer:

hxr  

=15cm×5cm so the answer is 75cm²

Step-by-step explanation:

Answer:

I believe it is the top right scatterplot, I can't tell which letter, I think B though.

Step-by-step explanation:

If you were to put a line of best fit for each graph, the top right scatterplot would be the only one that has a straight line of best fit.

Hope this helps :)

Answer:

Graph B

Step-by-step explanation:

Because it asked for a LINEAR relationship, and Graph B is the closest graph for a LINEAR relationship.

Hope it helps bro.

Step-by-step explanation:

diameter= 8

radius=diameter/2

=8/2

=4

height=2

Volume =r2h

=4*2*2

=16

therefore the volume of the cylinder is 16 cm^3

hope it helps u

pls mark it as the brainliest

Answer: Depends how long he's in school and how far away it is from his house.

Step-by-step explanation:

Answer:

7.81

Step-by-step explanation:

Pythagorean theorem

[tex]\sqrt{6^{2} +5^{2} }[/tex]

[tex]\sqrt{61}[/tex]= 7.81

c = 7.81

Law of Cosines

[tex]c=\sqrt{b^{2} +a^{2}-2ba*cos(C) }[/tex]

[tex]c=\sqrt{6^{2}+5^{2}-((2*6*5)*cos(90)) }[/tex]

c = 7.81

Answer:

A: $48.53

B: $58.23

Step-by-step explanation:

7% of 45.36 is 3.17.

20% of 48.53 is 9.70.

correct me if i'm wrong. hope this helps. :)

Answer:                                                                         1

                                                                                     4

244+6=300  [its a simple addition right?]                 3

brainliest?                                                                      J

                                                                                       E

                                                                                       N

                                                                                      <3   :)

Answer:

Upper Quartile is 16 according to the diagram.

Because she stopped at her friend's house on the way to the store, it can be seen that there is no detour. This means that the distance between her friend's house to the store is a subtraction problem

2.5 km - 700m=2500m-700m=1800m or 1.8km

I hope this helps fell free to ask any questions about this explanation.

Answer:

53712.4

Step-by-step explanation:

[tex]53.7124 * 10^{3}[/tex] This is the scientific notation, and since we do not have a negative exponent, we can assume that the decimal is going to move to the right, because when it's negative, the decimal will move to the left, making a smaller number.

So, when we move the decimal 3 times to the right, we find it sitting at 53712.4

Answer:

supplementary

Step-by-step explanation:

we have,

3x+15+2x=180

=> 5x +15 = 180

=> 5x = 180-15

=> 5x = 165

=> x = 165/5

=> x= 33

so, 3x+15 = 3*33+15

=> 99+15

=>114

2x = 2*33

=> 99

now we can check if these angles are supplementary

114 + 99 = 180

so, they are supplementary

Answer:

D. Undefined term

Step-by-step explanation:

Points are flat surfaces, named using a capital letter, and have no depth or width because they are on a FLAT plane. Just like lines are named "line A", are on a flat surface, and have no depth or width, points also share these characteristics because they are all on a plane. However, a point is not an undefined term, it is a defined term.

A point is a geometric feature used for the definition of geometric objects

The option which is not a characteristic of a point is option A:

A. Flat surface

The reason for the above selection is as follows:

A point in Euclidean geometry is a concept that defines an exact spatial location

The characteristics of a point are:

A flat surface is defined by three noncolinear points

Therefore;

The given option which is not a characteristic of a point is therefore option A. Flat surface

Research more about the characteristics of points here:

https://brainly.com/question/4700224

https://brainly.com/question/2751182

Answer: C

Step-by-step explanation:

Answer:

B. SSA

Step-by-step explanation:

Because we have 2 sides with a non-included (not in-between the two sides) angle, the triangles are similar by SSA Similarity.

I hope this helps!

Answer:

The answer is 31 hope this helps

Answer:

If it is raining, then soccer practice is cancelled

If soccer practice is cancelled, then you can go to the mall

Step-by-step explanation:

p then q

q then r

p, r

Answer:

Here is my best smile ☺️

Answer:

-6x

Step-by-step explanation:

This is correct because an unknown product is always classified as a variable or a most common used one, X. The product of -6 with an uknown variable, also known as a number, is -6x. Hope this helped and have a Great Day!!!

Answer:

Step-by-step explanation:

We are looking for a fraction with the numerator f and denominator g + 11.

This is:

Answer:

A distinctions does Russia enjoy is explained below in details.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

D None of these choices are correct.

Step-by-step explanation:

The value of x is 27.

[tex]\frac{x}{9} = \frac{9}{3}[/tex], x = 9 x [tex]\frac{9}{3}[/tex] = 27

answer:

12 x 4 = 4 you have to multiply and divide and do math and geometry and to be honest i have no idea what i doing but just pretend like this the answer