Mathematics High School

X3
If x = 7, what is the value of the expression above?
A. 21
B. 147
C. 343
D. 2,187 plz explain

Answers

Answer 1

Answer:

A

Step-by-step explanation:

if X is 7, and is connected/touching the three. You have to multiply and 7×3=21

Answer 2
If the question is X multiplied by 3 then the answer is 21 (7 multiplied by 3)

If the question is X to the power 3 then the answer is 343 (7 to the power 3 or 7 multiplied by 7 and then multiplied by 7 again)

Related Questions

Kyle has $25 and gets a job walking Chihuahuas for $2 per hour. Sophia has $4 and walks Rottweilers for $9 per hour. How many hours will they both have to work to have the same amount of money?

Answers

Answer:

  3 hours

Step-by-step explanation:

Let k represent Kyle's balance after h hours. Let s represent Sophia's balance after h hours. Then we have ...

  k = 25 +2h

  s = 4 +9h

We want to find h so that k=s:

  25 +2h = 4 +9h

  21 = 7h . . . . . subtract 4+2h

  3 = h . . . . . . . divide by 7

If both work 3 hours, they will have the same amount of money.

Harry owns a car dealership. During a sale one week, he sold 8 small cars out of every 11 cars he sold. Harry sold a total of 33 cars during the sale. How many small cars did he sell during the sale? Question 3 options: 8 9 24 33

Answers

Answer:

24

Step-by-step explanation:

The property can be used to remove the parentheses in the expression 1.7(x + 9).

Answers

Answer:  Distributive property

Can someone please check this chart I made for me? ​

Answers

Seems good to me! Have a good day!

Answer:

I think it's great.

Good job!

what is 6.257 x 10^-7

Answers

Answer:

-62570000

Step-by-step explanation:

6.257× -10000000

-62570000

What value of q satisfies this equation?
59 + 5q = 159 - 11

Answers

Answer:

0,454

Step-by-step explanation:

= 59 + 5q = 159q - 11

= 5q - 159q = 11 + 59

= 154q = 70

= q = 70 : 154

= q = 0,454

Answer:

89/5 or 17.8

Step-by-step explanation:

   

solve this equation 3/10x-4=40-2x

Answers

I Am Pretty Sure The Answer Is x=440/23

Hope This Help's

Which sets of ordered pairs show equivalent ratios use the grid to help you check all that apply

Answers

Answer:

(2,2), (4,4), (6,6)

Step-by-step explanation:

2×1= 2

2×2 = 4

2×3 = 6

Answer:

2nd and 4th options are correct choices.

Step-by-step explanation:

From the incomplete picture given below, we have:

2nd = (2,2), (4,4), (6,6)

4th = (4,1), (8,2), (12,3)

Enjoy!

i need help im to lazy right now (5y+3)(3y-6

Answers

Answer:

15y²-21y-18

Step-by-step explanation:

(5y+3)(3y-6)15y²-30y+9y-1815y²-21y-18

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height of the second rectangle is 9 inches, by what factor was the first rectangle changed?

Answers

Answer:

3.2

Step-by-step explanation:

3.2/1

how do you solve 7 - x = -11 * EXTRA POINTS

Answers

Answer:

X = -18

Step-by-step explanation:

7-18=-11

-11-7=-18
-X=-18
Change the signs
X=18

What is the best estimate for the value of the expression?
[34/8 - 16/3] -14/9
O -3
O -2 1/2
O 7
O 7 1/2

Answers

Answer:

-2 1/2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

-2 1/2

help me i have no clue

Answers

Answer:

It seems like D if I eyeball it.

the shower should be d. i hope this helps.

Mr.Joseph recently received a notice that his average gas and electric bill would increase at the beginning of the year. He went online to see the amount of his last 12 bills. If his average bill over the past 12 month goes up 17%, what can he expect to pay on average next year.

Answers

Answer:

about 2,546

Step-by-step explanation:

2x−1=34x+9
can someone solve this ?

Answers

Answer:

25

Step-by-step explanation:

9+25=34

-0.3125 is the decimal and the fraction is -5/16

Explain what mistake was made in the problem below and what should be the
right answer.
Student Work:
2(x + 4) – 8 = 3x+10-4
2x + 8–8 = 3x + 6
2x = 3x + 6
- 3x – 3x
X = 6

Answers

Answer:

Instead of moving the 3x to the opposite side of the equation they moved the 2x. And the correct answer is x=-6 not x=6.

Step-by-step explanation:

Student Work:

2(x + 4) – 8 = 3x+10-4

2x + 8–8 = 3x + 6

2x = 3x + 6

- 3x – 3x

X = 6

My work:

2(x+4)-8=3x+10-4

2x+8-8=3x+6

2x=3x+6

-x=6

x=-6

Emily owns 10.2 shares of stock in a company. On Friday, the stock dropped by $1.35/share. What was the total change in value of Emily’s stock? −$13.77 −$7.56 +$7.56 +$13.77

Answers

Answer:

-$13.77

Step-by-step explanation:

Write 821 in scientific notation

Answers

Answer:

8.21 x 102

Step-by-step explanation:

cus thats the answer

1) 3(3x - 4) = -2(1 – 4x)

Answers

Let's solve your equation step-by-step.
3
(
3
x
−
4
)
=
−
2
(
1
−
4
x
)
Step 1: Simplify both sides of the equation.
3
(
3
x
−
4
)
=
−
2
(
1
−
4
x
)
(
3
)
(
3
x
)
+
(
3
)
(
−
4
)
=
(
−
2
)
(
1
)
+
(
−
2
)
(
−
4
x
)
(Distribute)
9
x
+
−
12
=
−
2
+
8
x
9
x
−
12
=
8
x
−
2
Step 2: Subtract 8x from both sides.
9
x
−
12
−
8
x
=
8
x
−
2
−
8
x
x
−
12
=
−
2
Step 3: Add 12 to both sides.
x
−
12
+
12
=
−
2
+
12
x
=
10

Answer:

x = 10

Step-by-step explanation:

3(3x - 4) = -2(1 - 4x)

9x - 12 = -2 + 8x

9x - 8x = -2 + 12

x = 10

Hope this helps!

Find a general term a, for the sequence whose first four terms are given.
1 /1,1/4,1/9,1/16

Answers

Answer:

  an = 1/n^2

Step-by-step explanation:

We notice that the denominators are the squares of successive integers. The general term will be ...

  [tex]\boxed{a_n=\dfrac{1}{n^2}}[/tex]

) A train leaves Hamilton at 9.50 am and arrives in Wellington at 7.25pm. Work out, in hours and minutes, the time taken for this journey.

Answers

this is your answer.............

7 - 5/2 (8r - 6) + 2r =32

Answers

Answer:

r=-5/9

Step-by-step explanation:

Factor out the 2 from the expression

Reduce the numbers with the greatest common factor 2

Distribute the 5

Add Like terms

And then divide to get r

Please help me with this question ASAP Inequalities 9+3/5x>81/5

Answers

Answer:

9+3/5x-(81/5)=0

Step-by-step explanation:

pleseeeeeeeeeeeeeee helllllllppppp fassttttty pleaseeeeeeeee​

Answers

Answer:

0.10

Step-by-step explanation:

[tex]0.15 = \frac{15}{100} \\ 0.40 = \frac{40}{100} \\ 0.35 = \frac{35}{100} \\ [/tex]

Since all of them have the denominator as 100,

the total no. of sweets must be 100. So,

No of strawberries= 100-15-40-35

= 10

p(taking a strawberry sweet)= 10/100

= 0.10

Answer:

0.10

Step-by-step explanation: did work

Jordan will hike a 10 mile trail at a rate of 2 mi/h. Write a linear equation to represent the distance of the trail that Jordan still has to hike after x hours. What does the y-intercept of the equation represent?

Answers

Answer:

  y = 10 -2x; 10 is the length of the trail

Step-by-step explanation:

Jordan's remaining distance starts at 10 miles, and decreases 2 miles each hour:

  y = -2x +10

The y-intercept is the length of the trail.

if it is 9:39 what time would it be a hour and a half later

Answers

Answer:

It would be 11:09

Answer:

11:09

Step-by-step explanation:

30 mins after 9:30 is 10pm,add an hour that's 11 pm plus the 9 additional minutes its 11:09

What is 500 Divided by 4039.905

Answers

Answer:

0.12376528

Step-by-step explanation:

Answer:

≈ 0.12

Step-by-step explanation:

500/4039.905

≈ 0.12

To be more exact:  

0.1237652...

Solve the system of linear equation. 2x-5= 14
3x+2y = 40

Answers

Answer:

x=9.5, y=5.75

Step-by-step explanation:

2x-5=14, 3x+2y=40

focus on 2x-5=14 first:

2x-5=14 (add 5 to both sides) 2x=19(divide both sides by 2) x=9.5

Now subtitute x into the second equation and find y:

3(9.5)+2y=40(simplify) 28.5+2y=40(subtract 28.5 on both sides) 2y=11.5(divide both sides by 2) y=5.75

X=9.5, Y=5.75. Step by Step Explanation is-
First take 2x-5=14
= 2x=14+5 ; 2x=19 ; x=19/2=9.5
Now take 3x+2y=40; We substitute the value of x with 9.5. So the equation is-
=3*9.5+2y=40 ; 2y+28.5=40 ; 2y=40-28.5=11.5 ; y=11.5/2=5.75.
Thank you and hope it helped

3/4 of a cup of pasta sauce for every 12 ounces whats the unit rate

Answers

Answer:

the unit rate is 1/4 every 4 ounces

Step-by-step explanation:

12/3=4          3/3=1 so 1/4 of a cup every 4 ounces.

A ten-pin boeling ball has the volume of about 5374 cm^3. A cadlepin bolwing ball has a volume of about 48 in^3. About how much greater is the volume of ten-pin bowling ball than the volume of candlepin bowling ball.

Answers

Answer: 16122/144= 111.95

Step-by-step explanation: 5374cm^3=16122  48in^3=144= 111.95

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