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Bumek [7]
3 years ago
10

What is 0.4(5+2x)-0.5=3(0.3x+0.7) I've solved this but I'm not sure I got the right answer

Mathematics
2 answers:
iragen [17]3 years ago
8 0
0.4(5+2x)-0.5=3(0.3x+0.7)
2+0.8x-0.5=0.9x+2.1
0.8x-0.9x=2.1-2+0.5
-0.1x=2.5
x=-25
BlackZzzverrR [31]3 years ago
5 0
If you have a graphing calculator one way to know you are right is put the left side in Y1 and the right side in Y2 then hit 2nd trace and intersection then find the intersection and the X value is your answer. If you don't have a graphing calculator then I'm sorry
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mary robertson sells tires at a large car service center. She earns 10% commission on the first $1000.15 percent on the next $20
Illusion [34]

Answer:

$1530 = 45% commission

Step-by-step explanation:

First, jot down the important facts:

• first $1000 = 10% comm.

• next $2000 = 15% comm.

• total more than $3000 = 20% comm.

• total comm. = $3400

Then, go in order with your jotted facts to withdraw the total commission amount. Here's what I mean:

 $3400   ← total is more than $3000 = +20% comm.

<u>- $1000</u>   ← the first $1000 = +10% comm.

 $2400

<u>- $2000</u>   ← the next $2000 = +15% comm.

   $400

Then, add together the commission percentages:

20% + 10% + 15% = 45% comm.

Convert the percentage to a decimal:

45% × 100 = 0.45

And multiply it with the total amount to find the commission amount:

$3400 × 0.45 = $1530

8 0
3 years ago
Missing pattern 24,21, blank 15 blank ,blank
never [62]
To figure out this pattern, let's see if there's a constant rule that this sequence follows.
From 24 to 21, you're subtracting 3.
Let's try n-3, and fill in the blanks as we go.
24 - 3 = 21.
21 - 3 = 18.
18 - 3 = 15.
15 - 3 = 12.
12 - 3 = 9.
It seems that n-3 works as a rule, so your rule is:
N-3.
The missing blanks are:
18, 12, and 9.
I hope this helps!
8 0
3 years ago
Read 2 more answers
Sylvia earns $7 per hour at her after school job. After working one week she recieved a paycheck for $91. Write and solve an equ
Mashutka [201]
Amount of hours worked = h
7h = 91
h = 13 hours worked that week 
h (is greater to or equal to) 15
7 x 15 would equal 105 which means the most she can make in a week is $105

3 0
4 years ago
PLSSSSSS HELPPPP PLSSSSS 70 POINTSSSS PLSSSSSS
KiRa [710]

Answer:

hhnbvgbcdfgggffffffff

5 0
2 years ago
He volume of a rectangular prism with sides 3 ft, 4 ft, and h ft must be at least 36 cubic ft. Write and solve an inequality tha
levacccp [35]

Answer:sorry dude

Step-by-step explanation:I got nothing

5 0
3 years ago
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