1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
12

The frist brand is 30% and the second on is 55% in order to obtain 30 gallons of mixture that contains 35% how many gallons of e

ach brand must you usr
Mathematics
2 answers:
snow_tiger [21]3 years ago
4 0

yeet


first brand quantity is x

2nd brand quantity is y


x+y=30

0.3x+0.55y=0.35(30) or 0.3x+0.55y=10.5

solve for x and y

multiply first equation  by -0.3

-0.3x-0.3y=-9

add to 2nd equation


0.3x-0.3y=-9

<u>0.3x+0.55y=10.5 +</u>

0x+0.25y=1.5


0.25y=1.5

divide both sides by 0.25

y=6

sub back

x+y=30

x+6=30

x=24


you need 24 gallons of the first brand and 6 gallons of the 2nd brand

vladimir1956 [14]3 years ago
3 0

Answer: First Brand = 24 gallons, Second Brand = 6 gallons

<u>Explanation:</u>

                          Quantity         %           Qty (%)

First Brand              x              0.30          0.30x

Second Brand  <u>   30 - x   </u>     <u>  0.55  </u>        <u>0.55(30 - x) </u>= 16.5 - 0.55x

              Total       30        *    0.35     =     0.30x + 16.5 - 0.55x

                                            30(0.35)  =    16.5 - 0.25x

                                                10.5      =    16.5 - 0.25x

                                                -6.0      =            - 0.25x

                                                  24      =                      x

Second Brand: 30 - x   = 30 - 24   = 6

You might be interested in
I WILL GIVE BRAINLIEST to who answers this question correctly.
Alborosie
You start counting from 0 onwards:

C = 6
D = 8

Then C x D = 48

So the product CxD is situated at 48 units from 0



4 0
3 years ago
Dan bought 1/8 of a pound of
Alja [10]

Answer:

he bought 1 pound

Step-by-step explanation:

1/8 + 7/8 = 7+1=8, same denominator so it stays, =8/8=1

4 0
3 years ago
Read 2 more answers
12=3y-y+4y plz help me with this problem
Diano4ka-milaya [45]
Y=<span>2 is your answer. Hope this helps :)</span>
3 0
3 years ago
Brandon buys a radio for $44.97 in a state where the sales tax is 7%.
emmasim [6.3K]

Answer: If a magazine costs $2.35 and has a 6% sales tax, then what is the total cost of the item. First, we need to convert the sales tax percentage into a decimal

Step-by-step explanation:

8 0
2 years ago
Help plz!! i am having a hard time
beks73 [17]
If x represents the number of flower baskets, then, just as you showed, the answer cant be either a or b because store A doesnt charge $15 per flower basket but rather $15 for delivery. To see whether it is c or d, simply use the same number to represent the number of flower baskets in both inequalities. The easiest would be 1 because then youre multiplying - in the case of store A - 19.25 (how much each flower basket costs) times 1 (the total number of flower baskets) and then adding 15 (the cost of delivery) which is a total of 34.25. For store B it would be 17.5 times 1 plus 30 which equals 47.5. Therefore, the inequality for store A is less than that of store B, so D would be the answer. (i hope that sort of makes sense sjdjdjjs)
8 0
3 years ago
Other questions:
  • Plz help I have 10 mins left!
    6·2 answers
  • Find the value of angle L
    12·1 answer
  • Use the order of operations to solve the problem. 3 x 2 + 7​
    11·1 answer
  • Find the distance between the points (3,-5)<br> and<br> (3,-2).
    15·1 answer
  • If a person is 6 feet 11 inches tall, and weighs 153<br> pounds, what is their BMI?
    8·1 answer
  • If f(x)= 3x+1 is reflect across the y-axis; what would the slope &amp; y-intercept be? *
    10·1 answer
  • Help asap! This is due in three hours! Casey wants to buy a gym membership. One gym has a $156 joining fee and costs $29 per mon
    5·1 answer
  • Mrs. Adele is buying a new tie from Macy's. It says
    8·1 answer
  • I WILL GIVE BRAINLIEST I NEED HELP
    8·1 answer
  • Please *atleast* answer one of them!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!