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Varvara68 [4.7K]
3 years ago
5

Help for these to two pls

Mathematics
1 answer:
NeTakaya3 years ago
4 0

Answer:

1) 65%

2)-44%

Step-by-step explanation:

Formula:

((new value - old value)/(old value) )*100

If positive, it's an increase

if Negative, it's a decrease.

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The cost to rent a car is $25 plus an additional $0.15 for each mile the car is driven. Which of the following equations could b
kirill [66]

Answer:

25 + 0.15m = 71.8

Step-by-step explanation:

Given:

Fixed charge = $25

Additional charge for each mile = $0.15

Let number of miles driven be m.

Total Billed amount = $71.80

Now total bill amount is calculated by adding fixed charge with additional charge for each mile times number of miles.

Hence,

Total Billed amount  = Fixed charge + Additional charge for each mile × number of miles driven

25 + 0.15m = 71.8

Hence the equation is 25 + 0.15m = 71.8.

3 0
3 years ago
2(5*3)+2(5*8)+2(3*8)
AlladinOne [14]
158, because due to PEMDAS you would do all the functions in the parenthesis first, then you would move on to multiplication, and finally you would find the sum of the equation
7 0
3 years ago
Please help with that two math problems. I'll give brainly!
Serhud [2]

Answer:

the first one is 9 the second one is 12

Step-by-step explanation:

opposite sides of parallelograms are the same length

first one: 2x-1= x+8

2(9) -1 = 18-1 =17

(9) +8=17

second one: 22= 2x-2

2(12) -2 = 24 -2= 22

7 0
2 years ago
There are two sizes of red and blue marbles in a box. If the big marbles in the box, 45 are red and 3/4 are blue. The fraction o
Nat2105 [25]
Let
x------> amount of <span> big marbles in the box
y------> </span>amount of  small marbles in the box
R----> amount of  small marbles that are red in the box
B----> amount of  small marbles that are blue in the box

we know that
x=45+(3/4)*x----> x-(3/4)*x=45----> x/4=45-----> x=180

R+B=y-----> equation 1
R=(2/5)*y---> equation 2
B=(3/5)*y---> equation 3
B=R+24----> equation 4

substitute equation 2 in equation 1
[(2/5)*y]+B=y----> equation 5

substitute equation 2 in equation 4
B=[(2/5)*y]+24----> equation 6

resolve the system
[(2/5)*y]+B=y---> multiply by 5----> 2y+5B=5y----> 3y=5B
B=[(2/5)*y]+24----> multiply by 5----> 5B=2y+120

using a graph tool
see the attached figure

the solution is
B=72
y=120
R=y-B----> R=48

total marbies=x+y-----> 180+120-----> 300
tota; big marbies=180
<span>percent of the marbles are big marbles
</span>if 100%-----------> 300
 X----------------> 180
x=180*100/300-----> x=60%

the answer is
60%

8 0
3 years ago
Combine like terms 5x+3+2x​
chubhunter [2.5K]

Answer:

7x+3

Step-by-step explanation:

The only like terms are 5x and 2x

5+2=7

4 0
3 years ago
Read 2 more answers
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