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borishaifa [10]
3 years ago
5

Karla is given the equation 10x + 15 = 20 to solve. She says the solution is 1 2 . Which reason justifies her solution? *A) Karl

a says that to solve the equation you first add 15 and then multiply by 10. *B) Karla says that to solve the equation you first multiply by 10 and then add 15. *C) Karla says that to solve the equation you first subtract 15 and then divide by 10. *D) Karla says that to solve the equation you first divide by 10 and then subtract 15
Mathematics
1 answer:
Sav [38]3 years ago
8 0
C. Karla says that to solve the equation you first subtract 15 and then divide by 10.

Karla is given the equation 10x + 15 = 20 to solve. She says the solution is 1/2

10x + 15 = 20
10x = 20 - 15 (subtract 5)
10x = 5 (divide by 10)
x = 5/10 = 1/2
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PLEASE SOMEONE HELP ME WITH THESE QUESTIONS I'VE BEEN STUCK ON HERE FOR SO LONG​
Neporo4naja [7]

Answer:

# means number

Step-by-step explanation:

Distance = Y-axis or output

Cost= X-axis or input

you do not need to add the brackets for the formula(BEDMAS), but it makes things clearer

For A -

the Y-intercept is where the first coordinate, or the # or the X-axis, is 0 (on the graph the y-intercept 0,4)

For B -

y = mx + b

m =  slope

x = input or # on the X-axis

b = y-intercept

or

formula = (input x increase in the slope) + output for 0 or (distance x increase in cost) + output for 0

input(x axis)         output(y axis)

0                 5    ← output for 0

1                  9  

2                 13

there is a +4 increase in the slope, the increase in the slope is an output #(in this case 9) - the previous output number (in this case 5)

formula = (input x increase in the slope) + output for 0 = distance

formula in use = (3 x 4) + 5 = 17

For C:

The dependent variable is the output or the cost because the input or the distance will determine the cost travelled. Eg. if I travel 9 miles it will cost $41. If the dependent variable is the cost then the independent variable is the distance

For D: (input x increase in the slope) + output for 0

(4.2 miles x $4) + 5

16.8 + 5 = $21.8; It will cost $21.8 to travel 4.2miles

For E: (distance x increase in cost) + output for 0

(? x 4) + 5 = 14

(14 - 5) = 9

9 ÷ 4 = 2.25miles; with 14 dollars I could travel 2.25 miles

(It is a bit confusing lol, but this is the way I understand it, if you can't understand it this way then use y = mx + b)

4 0
2 years ago
Juliette is making a fruit salad.she purchased 9 2/3 ounces each of 6 different fruits . how many ounces of fruit did she purcha
Anettt [7]
9 2/3 total ounces is a total split up among 6 fruits.

So we need to divide 9 2/3 among the 6 fruits.

= 9 2/3 divide 6

= change 9 2 / 3 in improper fraction
= 9*3 + 2/3

= 29/3 divided by 6/1

= 29/3 x 1/6

= 29/18, change that to mixed fractions.

The answer is 1 11/18 ounces of each fruit.
3 0
3 years ago
The sum of two numbers is 8,79,245. if one of them is 2,35,678, find the other number.
murzikaleks [220]
643,567

235678+643567=879245
5 0
2 years ago
What are some equivalent expressions for..
den301095 [7]
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3 years ago
A submarine is at 200 meters below sea level to begin its mission. Then, it dives to a depth of 4 times its initial depth.Where
Kaylis [27]

Answer:

1000 meters below sea level

Step-by-step explanation:

Since the submarine dives at a depth of 4 times 200 meters, then it dives 800 meters.

Sso the submarine now is at 200 meters + 800 meters =1000 meters below sea level.

3 0
2 years ago
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