All categories

3 years ago

Problem type join results unknown

Mathematics

1 answer:

Allisa [31]3 years ago

8 0

Not sure what you are asking for, but,

Here is an example of a JRU (Join Result Unknown) word problem:

There were _____ kids on the playground. ____ more kids came onto the playground. How many kids are on the playground?

Here is an example of a JCU (Join Change Unknown) word problem:

There were ____ kids on the playground. Some more kids came on the playground. Now there are ____ kids on the playground. How many kids came on the playground?

Here is an example of a JSU (Join Start Unknown) word problem:

Some kids were on the playground. ____ kids came on the playground. Now there are ____ kids on the playground. How many kids were on the playground at the beginning?

You might be interested in

Sara got 720 marks out of 800 in the Basic Level Examination. How many percent of marks did she obtain?

RUDIKE [14]

90% is obtained by Sara

8 0

3 years ago

PLEASE HELP!!!! Will AWARD BRAINLIEST IF CORRECT!!!

atroni [7]

Following PEMDAS

4*2=8

-8-1=-9

-9+8=-1

The final answer is -1

6 0

3 years ago

For an angle _ with the point (5, _12) on its terminating side, what is the value of cosine?

Vlad [161]

Cos θ = adj/hyp = 5/sqrt(5^2 + (-12)^2) = 5/sqrt(25 + 144) = 5/sqrt(169) = 5/13

5 0

3 years ago

good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.

AVprozaik [17]

Answer:

Part 1

Set B

Part 2

We can use the FOIL method to multiply these expressions:

$\textsf{FOIL}: \quad(a+b)(c+d)=ac+ad+bc+bd$

However, as all the expression are in the format $(a+b)^2$ , we can use the shortcut: $(a+b)^2=a^2+2ab+b^2$

Part 3

Using the shortcut to find the products:

$\begin{aligned}\implies (x+5)(x+5)& =(x+5)^2\\ & =x^2+2(x)(5)+5^2\\ & =x^2+10x+25\end{aligned}$

$\begin{aligned}\implies (2x+9)(2x+9) & = (2x+9)^2\\ & = (2x)^2+2(2x)(9)+9^2\\ & = 4x^2+36x+81\end{aligned}$

$\begin{aligned}\implies (x+1)^2 & = x^2+2(x)(1)+1^2\\ & = x^2+2x+1\end{aligned}$

Part 4

A new example of a multiplication problem based on the structure of Set B is: $(3x+2)(3x+2)$

$\begin{aligned}\implies (3x+2)(3x+2) & = (3x+2)^2\\ & = (3x)^2+2(3x)(2)+2^2\\ & = 9x^2+12x+4\end{aligned}$

Part 5

An example of a multiplication problem that would NOT be included in Set B based on its structure is: $(x+2)(x-2)$

We cannot use the derived Set B shortcut (from part 2) to multiply this expression. Instead, we would have to use a different shortcut of "The Difference of Two Squares" to find the product of this example expression.

5 0

2 years ago

A chemist makes a mixture using 6 cups of power and 0.5 gallons of liquid. what is the unit rate of power to liquid?

frosja888 [35]

Answer:

Step-by-step explanation:

8 0

3 years ago