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Ganezh [65]
4 years ago
11

27% people chose salads. 81 people chose salads. How many in survey?

Mathematics
2 answers:
r-ruslan [8.4K]4 years ago
8 0

Answer:

Step-by-step explanation:

Semmy [17]4 years ago
4 0
300 people

81/27=3
3x100=300
You might be interested in
How to work out 20% of £54
Alexandra [31]

Answer:

£10.80

Step-by-step explanation:

20% = \frac{20}{100} = 0.2 , then

£54 × 0.2 = £10.80

3 0
3 years ago
The cost of 6 pounds <br> of coffee is $3.
4vir4ik [10]

Answer:

ok 2 pound per 1 doller and 1 pund per0.50 cent

Step-by-step explanation:

4 0
3 years ago
Kylie explained that (negative 4 x 9) squared will result in a difference of squares because (negative 4 x 9) squared = (negativ
JulijaS [17]

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression. Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Given information-

The expression for the given problem is,

(-4x+9)^2

<h3>Perfect square trinomial</h3>

A perfect square trinomial is the result in algebraic form which is obtained by solving the squared binomial expression.

The perfect square trinomial can be given as,

ax^2+bx+c

The given expression can be solved as,

(-4x+9)^2=(-4x+9)\times(-4x+9)\\(-4x+9)^2=-4x(-4x+9)+9(-4x+9)\\(-4x+9)^2=16x^2-36x-36x+81\\(-4x+9)^2=16x^2-72x+81

Hence Kylie did not understand that this is a perfect square trinomial and she did not determine the product correctly. Thus the option C is the correct option.

Learn more about the perfect square trinomial here;

brainly.com/question/88561

3 0
3 years ago
The radius of a sphere with a surface area of 64
IRINA_888 [86]

Answer:

2.257

Step-by-step explanation:

5 0
3 years ago
Let 3z=(2w-5)^3. If dw/dt =1/3, find dz/dt when z=9
jekas [21]

3<em>z</em> = (2<em>w</em> - 5)³

When <em>z</em> = 9, we have

27 = (2<em>w</em> - 5)³   →   3 = 2<em>w</em> - 5   →   <em>w</em> = 4

Differentiate both sides with respect to <em>t</em> :

3 d<em>z</em>/d<em>t</em> = 3 (2<em>w</em> - 5)² d<em>w</em>/d<em>t</em>

d<em>z</em>/d<em>t</em> = (2<em>w</em> - 5)² d<em>w</em>/d<em>t</em>

Plug in everything you know and solve for d<em>z</em>/d<em>t</em> :

d<em>z</em>/d<em>t</em> = 3² • (1/3)

d<em>z</em>/d<em>t</em> = 3

5 0
3 years ago
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