A drill is used to dig down into the earth. After 2 hours, the drill is 12 meters below the surface. After 5 hours, the drill is 30 meters below the surface. Which equation represents the depth of the drill in meters, y, after ​x hours of drilling?

Answer:

90

Step-by-step explanation:

8(94)

= 8(90 + 4)  Use distributive property

= 8(90) + 8(4)

Hope this helps!

Answer:

90

Explanation:

8(90) + 8(4) = 8(94) just add the numbers in the parentheses

In expanded form

8(90) = 720 8(4) = 32

720 + 32 = 752 to check

752 ÷ 8 = 94

Answer:

12

Step-by-step explanation:

2xy+15x

Let x=4 and y= -9

2(-4)(-9) + 15(-4)

Multiply

72 -60

Subtract

12

Answer:

-12

Step-by-step explanation:

2(4)(-9)+15(4) is what it should look like.

Answer:

y=1/2x-1 1/2 = Proper fraction

y=1/2x-3/2= improper fraction

y=x-2 = integer

Step-by-step explanation:

Answer:

is this question in Spanish

Answer:

78/100

Step-by-step explanation:

Since .78 is in the hundredths place just move the decimal two places to the right then put it over 100. But idk if you mistyped this because .78 is not a repeating decimal

Answer:

6/9

Step-by-step explanation:

Change 0.7878 to a fraction.

Let n = 0.7878... Multiply both sides by 100 (by 100 when there are two repeating decimal digits)

100n = 78.7878... Subtract n from 100n.

99n = 78 Divide both sides by 99

n = 78/99 but n is 0.7878..., so

0.7878... = 78/99

Similarly with 0.66...

Let n = 0.66... Multiply both sides by 10 (by 10 when there is only one repeating digit)

10n = 6.66... Subtract n from 10n.

9n = 6 Divide both sides by 9.

n = 6/9 but n is 0.66..., so

0.66... = 6/9

Answer:

1. first option

2. second option

3. second option

Step-by-step explanation:

i dunno i did the math and used a calculator. im pretty confident with my answers so hopefully theyre right

Answer:

c

Step-by-step explanation: because if you go up 5 then move 4 left you will get to the number coresponding it c

answer THE ANSWER IS C, 0 TO 1750

Step-by-step explanation:

Answer:

5*2 - 3

10-3

7

Step-by-step explanation:

mark me as the brainliest

Answer:

8.125

Step-by-step explanation:

Just do 1 and 5/8 times 5

Answer:

8 1/8 hours a week

Step-by-step explanation:

I 5/8 times 5 gives me the product of 8.125. After converting that to a mixed number, you get 8 1/8.

You're welcome.

Answer:

x = 15

Step-by-step explanation:

Since the triangles are similar, then the ratios of corresponding sides are equal, that is

[tex]\frac{9}{3}[/tex] = [tex]\frac{x}{5}[/tex] ( cross- multiply )

3x = 45 ( divide both sides by 3 )

x = 15

Answer:B

Step-by-step explanation: Divide 88 to 11 And You Got Your Answer.

Answer: The correct answer is B. 11x = 88, Divide both sides by 11. Bianca had $8

Step-by-step explanation:

9514 1404 393

Answer:

  4.5

Step-by-step explanation:

It appears the 5 integers must be {3, 3, 4, 5, 7}.

For the mode to be unique, there must be more than one '3', and there cannot be any other repeated numbers. For 4 to be the median, it must be the 3rd-highest number. Then the remaining numbers must be integers greater than 4 with a sum of 12 for the mean to be 4.4.

When 8 is added to the collection, the median is now the average of 4 and 5, so is 4.5.

The new median is 4.5.

_____

Comment on vocabulary

mean: the sum of numbers divided by the number of numbers. 5 numbers with a mean of 4.4 will have a sum of 5×4.4 = 22.

median: the middle number of a collection of an odd number of numbers, when sorted from lowest to highest. It is the 3rd number of a group of 5 numbers. When there are an even number of numbers in the group, the median is the average of the middle two in the sorted list. Here, that means the 3rd number in the list of 5 is '4'. When 8 is added, 4 becomes one of the numbers contributing to the average that will be the new median.

mode: the member of the group that appears the most times. When the mode is unique, it means there are no other numbers repeated as often. Here, we know the 3rd number (of 5) is 4, so there can only be two numbers '3' in the collection. That 3 is the unique mode means no other numbers are repeated at all.

Answer:

Step-by-step explanation:

eq. of line is y-(-2)=-3(x-6)

y+2=-3x+18

y=-3x+18-2

y=-3x+16

∵(a,7) lies on it.

7=-a+16

a=16-7=9

a=9

Answer:

Your answer is: x = 9250

Isolate the variable by dividing each side by factors that don't contain the variable.

Step-by-step explanation:

Hope this helped : )

Answer:

2

Step-by-step explanation:

The number of the 2/5-pound bags can Roberta fill will be 2.25.

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given that Roberta bought 9/10 pounds of raisins. She put 2/5 pounds in bags for her lunch.

The number of bags will be calculated as below:-

Number = ( 9 / 10 ) / ( 2 / 5 )

Number = 2.25

Therefore, the number of the 2/5-pound bags can Roberta fill will be 2.25.

To know more about an expression follow

https://brainly.com/question/23869986

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Answer:

0.16

Hope this Helps!

Answer:

0.16 is your answer hope this helps

Step-by-step explanation:

Answer:

B?

Step-by-step explanation:

A B and C are the same

Answer:

first

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

2x - 80 = 78x

4x+20=24x

Answer

g= 3 1/2 (#D)

Step-by-step explanation:

Answer:

6%

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

x3 - 3x2 + 2 9/2

Step-by-step explanation:

there is really no way to explain this