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3 years ago

15 is 30% of what number?

1 answer:

5 0

#1---> let the number you are trying to find be x for the following questions

30%*x=15
x=15/30%
x=50

#2
10%*x=14
x=14/10%
x=140

#3
(4/32)*100
is the same as (1/8)*100= 12.5%

#4
1%* x=11
x=11/1%
x=1100

by the way * means multiply

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I don’t get this can someone explain this

LekaFEV [45]

Answer:

15.7 units

Step-by-step explanation:

AB = 6, BC = 3

Therefore by Pythagoras theorem

AC = $\sqrt{45}$

$perimeter \: of \: \triangle \: ABC \\ = 6 + 3 + \sqrt{45} \\ = 9 + 6.70820393 \\ = 9 + 6.7 \\ = 15.7\: units$

3 0

3 years ago

2 The points (-15, -3) and (-7, -1) both

hammer [34]

Answer:

The rate of change of f(x) with respect to x is 1/4

Step-by-step explanation:

What this question simply ask is to find the slope of the line that passes through the two points

to find this, we use the slope equation

we have this as;

m= (y2-y1)/(x2-x1)

(x1,y1) = ((-15,-3)

(x2,y2) = (-7,-1)

m = (-1 + 3)/(-7 + 15) = 2/8 = 1/4

3 0

3 years ago

Factorise (3a - b)(a + b) - (3a - b)²

vredina [299]

Answer:

−6a^2+8ab−2b^2

Hope this helps

Pls give brainliest

Have a nice day :D

5 0

3 years ago

Read 2 more answers

Please help me if you can!

bazaltina [42]

Answer:

Step-by-step explanation:

We know that the sum of the measures of angles on one side of the parallelogram is 180°.

We have the equation:

(6x - 12) + (132 - x) = 180

6x - 12 + 132 - x = 180 combine like terms

(6x - x) + (-12 + 132) = 180

5x + 120 = 180 subtract 120 from both sides

5x = 60 divide both sides by 5

x = 12

Opposite angles in the parallelogram are congruent.

Therefore:

6y + 18 = 6x - 12

Put the value of x to the equation and solve it for y:

6y + 18 = 6(12) - 12

6y + 18 = 72 - 12

6y + 18 = 60 subtract 18 from both sides

6y = 42 divide both sides by 6

y = 7

7 0

3 years ago

Please help me - thankyou :)

olga_2 [115]

It is 6 because 1000 would not be the appropiate answer

3 0

3 years ago