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2 years ago

Solve the system below for x: (2 pts)

Mathematics

2 answers:

Troyanec [42]2 years ago

8 0

X=-5
Step by step explanation
6x+4 =5x-1
X+4=-1
X=-5

saw5 [17]2 years ago

3 0

Answer:

x=-5

Step-by-step explanation:

6x+4=5x-1

x+4=-1

x=-5

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A number is selected randomly from the integer from 10to30 what is the probability of picking a multiple of 4or5

arlik [135]

Answer:

$\frac{3}{7}$

Step-by-step explanation:

Start by finding how many integers there are from 10-30...

30-10+1=20+1=21

Note we have to add 1 since it is inclusive.

Now, let's find how many multiples of 4 or 5 there are from 10-30...

4*3=12

4*4=16

4*5=20

4*6=24

4*7=28

5*2=10

5*3=15

5*4=20

5*5=25

5*6=30

5+5-1=9

Note we have to subtract 1 since 20 is counted twice.

The probability would be...

$\frac{Multiples\ of\ four\ and\ five\ from\ 10-30}{Amount\ of\ integers\ between\ 10-30}=\frac{9}{21}=\frac{3}{7}$

6 0

2 years ago

A tv that normally cost $800

sukhopar [10]

what is the question it might be an Sony-75"

6 0

2 years ago

Carissa and Louann both have savings accounts. Carissa has $250 in her account and deposits $80 per month. Louann has $1230 in h

zlopas [31]

Carissa value after x months=current+amount deposited
louan value after x months=current-amount taken out

carissa depositied=amount per month times x months=80x
louan take out=amount per month tiems x months=60x

when wil amount be equal
se equal

cariss=lousa
250+80x=1230-60x
add 60x both sides
250+140x=1230
minus 250 both sides
140x=980
divide both sides by 140
x=7

find how much that is
250+80(7)=250+560=810

7 months both have $810

8 0

3 years ago

I need help on the yes and no one

lutik1710 [3]

Hello from MrBillDoesMath!

Answer:

10a. YES

10b. YES

10c. NO

10d . YES

Discussion:

If x = 12

10a. Does (3/4) 12 = 9? Does (36/4) = 9 = 9? YES

10b. Does 3x = 36? Does 3(12) = 36 = 36? YES

10c. Does 5x = 70? Does 5(12) = 60 = 70? NO

10d. Does x/3 = 4? Does 12/3 = 4 = 4 ? YES

Thank you,

MrB

5 0

3 years ago

select the irrational number? A)√9 B)√12 C)√16 D)√20 E)√25 (there should be more than one answer)

GenaCL600 [577]

The answers are:
__________________________
[B]: "√12 " ; AND:
__________________________
[D]: "√20" .
__________________________
Note: "Irrational numbers" have decimals that are: 1) non-terminating; AND: 2) non-repeating.
__________________________
Consider the answer choices given; and consider the given information that there "should be no more than one answer.
__________________________________
Consider the following answer choices:
__________________________________
Choice A) "√9" = 3 . Rule out this choice.
__________________________________
Choice C) "√16" = 4 . Rule out this choice.
__________________________________
Choice E) "√25" = 5. Rule out this choice.
_________________________________
We are left with 2 (two) remaining answer choices:
[B]: "√12" ; and: [D]: "√20" .
_________________________________
If there are more than one answer, then these two choices should be the correct answer. However, let us explore these two choices, using a calculator.
____________________________
[B]: "√12" = 3.4641016151377546

[D]: "√20" = 4.4721359549995794
_________________________________
These two answer choices should the correct answers.

6 0

3 years ago