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3 years ago

X + 8 = 14 solve each equation using the substitution method

Mathematics

2 answers:

attashe74 [19]3 years ago

7 0

Answer:

x=6

Step-by-step explanation:

14-8 equals 6, thos leaves you with x=6

likoan [24]3 years ago

6 0

Answer:

X + 8 = 14

- 8 | - 8

__________

X = 6

Step-by-step explanation:

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What value of x is in the solution set of –5x – 15 > 10 + 20x?

Scilla [17]

Hello,

-5x-15>10+20x
==>-15-10>20x+5x
==>-25>25x
==>-1>x
==>x<-1

6 0

4 years ago

20 people applied for a job. Everyone either has a school certificate or diploma or even both. If 14 have school certificates an

STatiana [176]

Given:

Either has a school certificate or diploma or even both = 20 people

Having school certificates = 14

Having diplomas = 11

To find:

The number of people who have a school certificate only.

Solution:

Let A be the set of people who have school certificates and B be the set of people who have diplomas.

According to the given information, we have

$n(A)=14$

$n(B)=11$

$n(A\cup B)=20$

We know that,

$n(A\cup B)=n(A)+n(B)-n(A\cap B)$

$20=14+11-n(A\cap B)$

$20=25-n(A\cap B)$

Subtract both sides by 25.

$20-25=-n(A\cap B)$

$-5=-n(A\cap B)$

$5=n(A\cap B)$

We need to find the number of people who have a school certificate only, i.e. $n(A\cap B')$ .

$n(A\cap B')=n(A)-n(A\cap B)$

$n(A\cap B')=14-5$

$n(A\cap B')=9$

Therefore, 9 people have a school certificate only.

3 0

3 years ago

If f(x) = 3x - 2 then what is f(10)?

babymother [125]

Answer:

f(10) = 3(10) - 2 = 28

Step-by-step explanation:

6 0

3 years ago

The sum of one-third of a number and three-fourths of the number exceeds that number by one. Which equation could be used to fin

Marrrta [24]

$\frac{n}{3} + \frac{3n}{4} = n+1 
$
$4n + 9n = n+1$
$13n = n+1$
$13n-n = 1$
$12n = 1$

8 0

3 years ago

Read 2 more answers

Is this correct? <br><br> #2 <br><br> Please check

julsineya [31]

Yes you are correct!

you first have to get rid of the number next to the variable m. so you have to subtract 9 to get rid of the variable. then you subtract 9 from both sides and get that answer.

4 0

4 years ago