All categories

3 years ago

Juliana wants to find the mass of a watermelon. what unit should she use?

1 answer:

3 0

I would recommend her to use kilograms:

grams are the standard weight unit used in the majority of the countries and in science- that's why it's better than pounds.

But kilograms are better than grams, since a watermelon weights around 2 kg, so it's easier to remember than 2000 grams.

You might be interested in

Sin 90 +cos 50 -tan1

Feliz [49]

Answer:

1.62533254

Step-by-step explanation:

7 0

3 years ago

It takes 3men 5 hours to repair a road.how long will it take 5 men to do the job if they work at the same rate

Ksju [112]

Answer:

3 hours

Step-by-step explanation:

3 Men-5 hours

5 men-?

1 man-3×5= 15 hours

therefore 5 men =15÷5= 3 hours

7 0

3 years ago

Read 2 more answers

Given x=-3, y=6, and z=-4 xz/-2y

zimovet [89]

Answer:

-1

Step-by-step explanation:

sub in the values of x, y and z into the equation

you get:

(-3)(-4)/(-2)(6)

= 12/-12

= -1

8 0

3 years ago

Read 2 more answers

What is factorisation

liubo4ka [24]

Factorization is a method of writing numbers as the product of their factors or divisors.

Solution:

Factorisation:

Factorization is a method of writing numbers as the product of their factors or divisors.

In other words we can say, Finding what to multiply together to get an expression.

It is like "splitting" an expression into a multiplication of simpler expressions.

Methods of factorisation:

Factoring out the GCF

The sum-product pattern

The grouping method

The perfect square trinomial pattern

The difference of squares pattern

Factoring out the GCF:

This methods means that factoring out common factors

For example:

$12x^2 + 3x = 3x(4x + 1)$

This can be used when each term in given expression shares a common factor

The sum-product pattern

A quadratic equation may be expressed as a product of two binomials

For example:

$x^2 + 7x + 12 = (x + 3)(x + 4)$

This method can be used for quadratic equations of form $ax^2 + bx + c = 0$

The grouping method

If the polynomial is of the form $ax^2 + bx + c$ and there are factors of ac that add up to b , we can use this method

For example:

$2x^2 + 7x + 3\\\\2x^2 + 6x + 1x + 3\\\\2x(x + 3) + 1(x + 3)\\\\(x + 3)(2x + 1)$

The perfect square trinomial pattern

If the first and last terms are perfect squares and the middle term is twice the product of their square roots , we can use this method

For example:

$x^2 + 10x + 25\\\\(x + 5)^2$

The difference of squares pattern

If the expression represents a difference of squares, we can use this method

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

For example:

$x^2 - 25\\\\x^2 - 5^2\\\\(x + 5)(x - 5)$

6 0

3 years ago

Given f(x)=14(5−x)2 what is the value of f(11)?

dlinn [17]

Answer:

I was unsure about the way your question was written so I solved for two equations: f(x)=14(5-x)*2 and f(x)=14(5-x)+2

Step-by-step explanation:

8 0

3 years ago