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yulyashka [42]
2 years ago
12

Martha estimated there were 83 marbles in a jar for a contest. The actual number of marbles in the jar was 105. What was the per

cent error of Martha's estimation?
Mathematics
1 answer:
Luba_88 [7]2 years ago
4 0

Answer:

26.5%

Step-by-step explanation:

i did the math, that answer should be correct, but the question is stated  strange.

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The following table shows the monthly income and expenses for a new business.
raketka [301]

a. use the month for x

Income

point (1,1500) (2 3500)

slope (y2-y1)/(x2-x1) =(3500-1500)/(2-1)=2000

y-y1=m(x-x1)

y-1500 = 2000(x-1)

y-1500=2000x-2000

y = 2000x-500

Expenses

point (1,21400) (2 18800)

slope (y2-y1)/(x2-x1) =(18800-21400)/(2-1)=-2600

y-y1=m(x-x1)

y-21400 = -2600(x-1)

y-21400=-2600x+2600

y = -2600x+24000


b  2000x-500=-2600x+24000

add 2600x to each side

4600x -500 = 24000

add 500 to each side

4600x = 24500

divide by 4600

x=5.326 months


Solve the system by graphing

{2x - 4y = -4      -4y = -2x-4   y = 1/2x +1  slope is 1/2 y intercept 1

{3x - y = 4    -y =-3x +4   y = 3x-4   slope is 3 y intercept is -4

this one you have to do  cannot graph here  the solution is x=2, y=2


Classify the system without graphing  

{y = 12 - 5x

{x - 4y = -6    

independent system


dependent system is the same line and has infinite solutions

inconsistent system has no solutions  (parallel lines)





6 0
3 years ago
The roof is leaking in Tim's cabin. He has put small containers (all the same size) and large containers (all the same size) aro
professor190 [17]

Answer:

The large container holds 6 cups of water

Step-by-step explanation:

If two small containers and one large container equal 10 cups and one large minus one small equals 4 cups then that means that each small container has to equal 2 cups of water.

5 0
3 years ago
Can I get help on 1 and 2
kvasek [131]

Answer:

1.the slope is 1/2 and the y int is -4

2.the slope is -3 and the y int is 6

6 0
3 years ago
What shape always has four congruent sides
pshichka [43]

Answer:

A rhombus

Step-by-step explanation:

A rhombus is a parallelogram with 4 congruent sides and it always has four congruent sides. It also has two pairs of equal angles.

4 0
3 years ago
Read 2 more answers
The yearly profits of a new small business, in hundreds of dollars, during its first 10 years can be modeled by p(x) = x3 + x2 –
zhuklara [117]
Dso in year 6
for x=6

p(6)=6³+6²-2(6)+27
p(6)=216+36-12+27
p(6)=252+15
p(6)=267
in hundreds of dollars
time 100

267 times 100=26700


D is answer
3 0
4 years ago
Read 2 more answers
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