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3 years ago

In class 6, 80percent of the children like crisps.

Mathematics

2 answers:

dezoksy [38]3 years ago

6 0

80% like crisps
75% of the 80% like chocolate.

What percent of the total are the children who like chocolate and crisps?

75% of 80% = 60%

This 60% of children like chocolate and crisps

Alex17521 [72]3 years ago

4 0

This should be your answer <em>(attached in the photo)</em>

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SIMPLIFY (4-74+7) A. 223 B. 9 27 C. 9+2/7 D. 9

sesenic [268]

Answer:

The correct option is D.

Step-by-step explanation:

The given expression is

$(4-\sqrt{7})(4+\sqrt{7})$

Difference of two squares property:

$a^2-b^2=(a+b)(a-b)$

Using the above property, the given expression can be written as

$(4)^2-(\sqrt{7})^2$

Applying square we get

$16-7$

$9$

Therefore the correct option is D.

6 0

2 years ago

Hernando's salary was $54,500 last year. This year his salary was cut to $52,355. Find the percent decrease. Round to the neares

Otrada [13]

Answer:

Decrease by 3.9%

Step-by-step explanation:

54,500(1-x) = 52355

x=0.03935... = 3.935% or 3.9%

8 0

2 years ago

Read 2 more answers

Given f(x)=2x+3 and g(x)=x^2-5, find the following

dalvyx [7]

a) 13

b) 0

c) 1

d) 4/9

<h3>What is function?</h3>

An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable)

Given:

f(x)= 2x+3 and g(x)= x²-5.

a) (f+ g)(3)

= f(3)+ g(3)

= 2(3)+3 + (3)²-5

=6+3+9-5

=13

b) (f-g)(4)

= f(4)- g(4)

= 2(4)+3 - (4)²+5

=8+3-16+5

= 0

c) (fg)(-2)

= f(-2)*g(-2)

=[ 2(-2)+3][(-2)² -5 ]

=(-1)(-1)

= 1

d) (g/f)(3)

= g(3)/f(3)

= 3²-5/ 2(3)+3

= 4/9

Learn more about this concept here:

brainly.com/question/93497

#SPJ1

7 0

1 year ago

Consider a circle whose size can vary. Let r represent the radius of the circle (in cm) and let C represent the circumference of

Phantasy [73]

Answer:

$g(C)=\frac{C}{2\pi}$

Step-by-step explanation:

Let r represent the radius of the circle (in cm) and

let C represent the circumference of the circle (in cm).

First solve the equation for 'r' using circumference formula

Circumference of circle formula is $C= 2\pi r$

Solve for r, divide both sides by 2pi

$r=\frac{C}{2\pi}$

the function g determines the radius of the circle in cm

So we replace 'r' with g(C), where C is the circumference

$g(C)=\frac{C}{2\pi}$

8 0

3 years ago

Find the quotient. x2-4xy+3y2 <br> ----------------- +(x2-xy-6y2)<br> x+2y

Lelu [443]

9514 1404 393

Answer:

(b) (x -y)/(x +2y)^2

Step-by-step explanation:

You want the quotient ...

$\dfrac{\left(\dfrac{x^2-4xy+3y^2}{x+2y}\right)}{x^2 -xy-6y^2}=\dfrac{(x-3y)(x-y)}{(x+2y)(x-3y)(x+2y)}=\boxed{\dfrac{x-y}{(x+2y)^2}}$

4 0

2 years ago