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3 years ago

Help me with this too!

Mathematics

1 answer:

Tasya [4]3 years ago

4 0

X = 17
5 = x - 12
12 + 5 = x
17 = x

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Rename 120,000 = ten thousands

djverab [1.8K]

Stop at the ten thousands column - so it is equal to 12 ten thousands
Check: 12 x 10,000 = 120,000

8 0

4 years ago

T<br> W hat is the value of 3ab+50-6 when a=-1 and D=3?<br> - -<br> ООО

rodikova [14]

Answer:

Step-by-step explanation:

i'm either really confused or there's a lot of weird typos in this

assuming there's just a lot of weird typos, this is how you would solve it:

1. plug in -1 for a and 3 for b

$3(-1)(3)+50-6$

2. multiply 3 by -1

$3(-3)+50-6$

3. multiply 3 by -3

$-9+50-6$

4. add 50 to -9

$41-6$

5. subtract 6 from 41

$35$

3 0

3 years ago

A university offers 3 calculus classes: Math 2A, 2B and 2C. In both parts, you are given data about a group of students who have

ankoles [38]

Answer:

4 students

Step-by-step explanation:

The total number of students is given by:

$|A|+|B|+|C|-|A\cap B|-|A\cap C|-|B\cap C| + |A\cap B \cap C| = N$

Where N is the total number of students, A is the number of students that have taken Math 2A, B is the number of students that have taken Math 2B, and C is the number of students that have taken Math 2C:

$|A|+|B|+|C|-|A\cap B|-|A\cap C|-|B\cap C| + |A\cap B \cap C| = N\\51+80+70-15-20-13 + |A\cap B \cap C| = 157\\ |A\cap B \cap C| =4$

4 students in Group A have taken all three classes.

*The number of students that have taken two classes has be subtracted so those students do not get counted twice

4 0

4 years ago

A scale on a hiking map shows that 1.5 inches represents 4 miles

Alexxandr [17]

Answer: 24 miles.

Step-by-step explanation:

1. You must keep on mind that, according the scale on the map, 1.5 inches represents 4 miles. Then, you can set up the following ratio:

$\frac{1.5}{4}=\frac{6}{x}$

Where x is the number of actual miles asked

2. You must solve for x, as following:

$(1.5)(x=4*6\\x=\frac{24}{1.5}\\x=16$

3. Therefore, 6 inches on the map represents 24 miles.

6 0

4 years ago

Read 2 more answers

I have a bag containing red, green, blue, and white marbles and the ratio $\text{red}:\text{green}:\text{blue}:\text{white}$ is

Jobisdone [24]

Answer:

Step-by-step explanation:

Let 2x be how many red/green marbles there are,

let 5x be how many blue marbles there are, and

let 7x be how many white marbles there are.

2x + 2x + 5x + 7x = 304

16x = 304

x = 19

As 5x is defined as how many blue marbles there are, we could just plug x for 19:

5*19 = 95

I hope this helped, and if it did please consider giving me brainliest :)

5 0

3 years ago