|3x−2|=19 please help quick thanks

Answers

Answer 1

Answer:

x=7,-17/3

Step-by-step explanation:

Answer 2
Hey there
The answer for X=7 here is the equation
[3x5-2]=19

Related Questions

which number is a fact of 6?

Answers

Answer:

if you meant factor then 1, 2, 3 and 6

Answer:

1,2,3,6

Step-by-step explanation:

A factor of a number is any number that can go evenly into another number.

1 x 6 = 6

2 x 3 = 6

So, 1,2,3,6 are factors of 6

Tell me if I wrong.

If right, can I have brainliest

Two basketball players average the same number of points per game. What information would be most helpful in determining
which player's game performances show the least variability?
the most and least points each player has scored in a game
the number of games each player has played
O the average number of points each players team scores per game
the total number of points each player has scored

Answers

Answer:

the average number of points each team scores per game

Step-by-step explanation:

Answer:

B. the number of games each player has played

Step-by-step explanation:

Please help!
I'm having a tuff time figuring this out.

Answers

Answer:

x = 17

Step-by-step explanation:

Since the triangles are congruent

<I = <P

3x+4 = 72-x

Add x to each side

3x+4+x = 72-x+x

4x+4 = 72

Subtract 4 from each side

4x+4-4 = 72-4

4x = 68

Divide each side by 4

4x/4 = 68/4

x = 17

A cone shaped tepee has a radius of 4 feet and a slant height of 7feet. If joe is six feet tall, determine whether joe is shorter or taller than the height of the tepee.

Answers

Answer:

Therefore Joe is taller than the height of the tepee.

Step-by-step explanation:

Cone:

Cone is three dimensional shape. It has an vertex.Slant height of an object is a height that measured along a lateral surface from the vertex to the the base. The slant height of a cone is =   [tex]\sqrt{height^2+radius^2}[/tex]The height of a cone is  [tex]=\sqrt{slant\ height ^2- radius^2[/tex]The volume of a cone =  [tex]\frac{1}3 \pi r^2 h[/tex]Lateral surface area is  [tex]=\pi r l[/tex]

Given that,

A cone shaped tepee has a radius of 4 feet and slant height of 7 feet.

The height of the cone is  [tex]=\sqrt{slant\ height ^2- radius^2[/tex]

                                           [tex]=\sqrt{7^2-4^2}[/tex]feet

                                          [tex]=\sqrt{33}[/tex] feet

                                          ≈5.74 feet

Given that, Joe is 6 feet tall.

Since 6 feet> 5.74 feet

Therefore Joe is taller than the height of the tepee.

Answer: Joe is taller than the tepee

select all of the following that are like radicals

Answers

Answer:

READ BELOW, Answers Are: A,B,D,F

Step-by-step explanation:

If you are referring to this Edge problem here:

Answer:

A, B, D

Step-by-step explanation:

Adding and Subtracting Radicals Instruction on Edge

Name all segments parallel to GH.

Answers

All the segments that are parallel to GH in the given shape are, BC, AD and FI. Option A

How to identify all segments parallel to GH

To identify all segments parallel to GH, understand the basic structure of a cuboid and its faces.

A cuboid is a three-dimensional shape with six rectangular faces. Each face of the cuboid is parallel to the opposite face. This property allows us to identify segments that are parallel to each other within the cuboid.

To identify segments parallel to a specific segment in a cuboid, follow these steps:

Understand the orientation of the cuboid:

Visualize the cuboid and identify its three pairs of opposite faces. These faces are parallel to each other.

Identify the given segment:

Determine the specific segment in the cuboid to which you want to find parallel segments.

In this case GH

Locate the faces that contain the given segment:

Identify the faces that contain the given segment. These faces will be parallel to each other.

Based on the highlighted steps above, by visualization,

Segment BC is parallel to GH

Segment AD is parallel to GH

Segment FI is parallel to GH

Therefore, all the segments that are parallel to GH are, BC, AD and FI. Option A

PLwz help thank youuuuuuuuuuuu

Answers

y = |x|

This is absolute value because it's a v-shape.

Combine the like terms to create an equivalent expression: -4q - (-8q) + 10

Answers

Like terms are terms that have the same variable and power/exponent.

-4q - (-8q) + 10   (two negative signs cancel each other out and become positive)

-4q + 8q + 10     The only like terms you can combine are -4q and 8q, because they have the same variable of q and an exponent of 1.

4q + 10        (this is as far as you can simplify)

Remove the parentheses and change the sign = -4q + 8q + 10

Combine like terms and you get 4q + 10

If you factor it you’d get 2(2q + 5)

Emily purchased a couch, loveseat, in the chair for $2000. The Loveseat cost twice as much as the chair, and the couch cost $600 more than the love seat. Find the cost of the couch, loveseat, and chair.

Answers

Answer:

Chair $280

Loveseat $560

Couch $ 1,160

Step-by-step explanation:

chair = x

loveseat=2x

couch = 2x + 600

x +2x + 2x +600 = 2000

5x + 600 =2000 subtract 600 from both sides

5x =1400 divide by 5

x = $280

Chair is the value of x =$280

Loveseat is twice the value of x = 2 x $280 =$560

Couch is twice the value of x plus $600 = $560 + $600

The cost of a chair, the cost of a loveseat, and the cost of a couch are $280, $560, and $1,160 respectively.

What is the linear system?

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

Emily purchased a couch, loveseat, in the chair for $2000.

The Loveseat cost twice as much as the chair, and the couch cost $600 more than the love seat.

Let

The cost of the chair is x, then the loveseat is 2x and the cost of the couch is 2x + 600.

Then

The sum of the cost of the chair, loveseat, and couch is $2000.

[tex]x + 2x + 2x + 600 = 2000\\[/tex]

On simplifying, we have

x = 280

Then

The cost of the chair = x = $280.

The loveseat = 2x = 2(280) = $560

The cost of the couch = 2x + 600 = 2(280) + 600 = $1,160

Thus, the cost of the chair, loveseat, and couch is $280, $560, and $1,160 respectively.

More about the linear system link is given below.

https://brainly.com/question/20379472

What is y+6=1/3(x-9) written in slope-intercept form?

Answers

Slope intercept form is y = mx + b.

y + 6 = 1/3(x - 9)

y + 6 = 1/3x - 3

y = 1/3x - 9

Hope this helps!! :)

Answer:

[tex]y = 1/3x - 9[/tex]

Step-by-step explanation:

Step 1:  Rewrite in slope-int form

[tex]y + 6 = 1/3(x - 9)[/tex]

[tex]y + 6 = 1/3x - 3[/tex]

[tex]y + 6 - 6 = 1/3x - 3 - 6[/tex]

[tex]y = 1/3x - 9[/tex]

Answer:  [tex]y = 1/3x - 9[/tex]

Tomás is enlarging a square with a side length of 15 cm using this scale factor and scale drawing.

Scale factor = 2 centimeters: 7 meters. A square with side lengths of 15 centimeters.

Which proportion would Tomás use to solve for the side length (x) of the enlarged square in meters?

Answers

Answer:

[tex]\frac{2 CM}{7 M} = \frac{15 CM}{X M}[/tex]

Step-by-step explanation:

I did the assignment.

The side length (x) of the enlarged square in meters has a scale factor will be 52.5 meters.

What is dilation?

Dilation means the changing of the size of the object without changing the shape. The size of the object may be increased or decreased based on the scale factor.

Tomás is enlarging a square with a side length of 15 cm using this scale factor and scale drawing.

Scale factor = 2 centimeters: 7 meters. A square with side lengths of 15 centimeters.

Let x be the dilated length.

Then we have

[tex]\rm \dfrac{15}{x} = \dfrac{2}{7}\\\\x \ \ = 52.5[/tex]

More about the dilation link is given below.

https://brainly.com/question/2856466

Using a scale of 2in: 45 miles

The distance between Troy City and Ben City is 315 miles. How far apart are they on the map? (numerical answer)

Answers

set Up a ratio:

2 inches / 45 miles = x inches / 315 miles

Solve for x

Cross multiply:

45x = 630

Divide both sides by 45

X = 630 /45

X = 14 inches apart

Determine if the expression 7r - 6r3 - 10r4 is a polynomial or not.​

Answers

Answer:

A polynomial is a combination of terms separated by + or - signs. A polynomial does not contain variables raised to negative or fractional exponents, variables in the denominator or under a radical, or any special features such as trigonometric functions, or logarithms.

Final answer:

The expression 7r - 6r^3 - 10r^4 is a polynomial because it consists of terms with variables raised to non-negative integer exponents.

Explanation:

The expression 7r - 6r3 - 10r4 is a polynomial because it is a mathematical expression consisting of terms with variables raised to non-negative integer exponents.

A polynomial is an algebraic expression made up of one or more terms, where each term has a coefficient and a variable raised to a non-negative integer exponent. In this case, the expression has three terms: 7r, -6r3, and -10r4. The variable in the expression is 'r', and each term is raised to a non-negative integer exponent.

Therefore, the expression 7r - 6r3 - 10r4 is a polynomial.

Learn more about Polynomials here:

https://brainly.com/question/23631446

#SPJ3

HELP WILL MARK BRAINLIEST!!
Solve.

Answers

Answer:

[tex]-\frac{11}{12}[/tex]

Step-by-step explanation:

[tex]\frac{5}{8} +\frac{3}{4} =\frac{11}{8} \\\\\frac{11}{8}=1.375\\\\\frac{-2}{3} -\frac{5}{6} =-\frac{3}{2} \\\\-\frac{3}{2}=-1.5\\\\\frac{1.375}{-1.5} =-\frac{11}{12}[/tex]

We'll split this up between the numerator and denominator.

Numerator:

5/8 + 3/4

Step 1) Make all of the denominators the same

5/8 + 6/8

Step 2) Add the numerators together

11/8

Denominator:

-2/3 - 5/6

Step 1) Make all of the denominators the same

-4/6 - 5/6

Step 2) Subtract the numerators

-9/6

Now we have (11/8) / (-9/6). Dividing fractions is the same as multiplying by the reciprocal.

11/8 x -9/6

-99/48

-2 3/48

-2 1/16

Hope this helps! :)

What scale factor did Salome use to go from Triangle R to Triangle T?

Answers

Answer:is there a picture included in this promblem

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

The graph below shows the average daily temperatures on January 1 from 1900 to 1934 for city A.
Average Daily Temperature
Jan. 1 - 1900-1934
City A
Number of Years
20
22 24 26 28
Average Daily Temperature
The mean of the temperatures in the chart is 24° with a standard deviation of 4° Which temperature is within one standard
deviation of the mean?
Save and Fxit

Answers

25 years had temperatures within one standard deviation of the mean.

What is standard Deviation?

The term "standard deviation"  (or σ) refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

Given:

Data for the average daily temperature on January 1 from 1900 to 1934 for city A.

Mean u = 24°C

standard deviation σ = 4°C

Now, Interval for 1 standard deviation ( σ ):                                    

[ u - σ , u + σ ]

[ 24 - 4 , 24 + 4 ]

[ 20 , 28 ] °C

Now, determine the number of years the temperature T lied in the above calculated range: [ 20 , 28 ].

T1 = 20 , n1 = 2 years

T2 = 21 , n2 = 3 years  

T3 = 22 , n3 = 2 years

T4 = 23 , n4 = 4 years  

T5 = 24 , n5 = 3 years

T6 = 25 , n6 = 3 years  

T7 = 26 , n7 = 5 years

T8 = 27 , n8 = 2 years

T5 = 28 , n9 = 1 years

and, The total number of years:

∑ni = n1 + n2 + n3 + n4 + n5 + n6 + n7 + n8 + n9

=  2 + 3 + 2 + 4 + 3 + 3 + 5 + 2 + 1

= 25 years          

Learn more about standard deviation here:

https://brainly.com/question/23907081

#SPJ7

PLEASE ANSWER!!! I NEED HELP!!!

Answers

Answer:

Third Option

Step-by-step explanation:

sqrt(13 = 3.6055512754639893

3.6


Which polynomial has zeros of 2, 5, and -4?

A. (x + 2)(x + 5)(x - 4)
B. (2x - 4)(x + 5)(x + 4)
c. 6 - 2)(x - 5)(x - 4)
D. (2x - 4)(x - 5)(x + 4)

Answers

The polynomial has zeros of 2, 5, and -4 is option (d) (2x - 4)(x - 5)(x + 4).

What is polynomial?

A polynomial is a mathematical equation made up of indeterminates and coefficients and uses only addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

How to find the correct polynomial?

To find a polynomial that has zeros 2, 5, and -4 substituted x = 2, 5, and -4 in a polynomial.

By substituted x = 2, 5, and -4 in a polynomial (2x - 4)(x - 5)(x + 4).

(a) For x=2.

The polynomial is

(2(2) - 4)(2- 5)(2 + 4) = (4- 4)(-3)(6)

                                 = 0×-3×6

                                 = 0

(b) For x=5.

The polynomial is

(2(5) - 4)(5 - 5)(5 + 4) = (10-4)(0)(9)

                                  = 6×0×9

                                  = 0

(c) For x=-4.

The polynomial is

(2(-4) - 4)(-4 - 5)(-4 + 4) = (-8-4)(-9)(0)

                                  = -`12×-9×0

                                  = 0

Since (2x - 4)(x + 5)(x + 4) has zeros of 2, 5, and -4

For incorrect options

By substituted x = 2, 5, and -4 in a polynomial  (x + 2)(x + 5)(x - 4), (2x - 4)(x + 5)(x + 4) and (6x - 2)(x - 5)(x - 4) is not equal to zero therefore (a), (b) and (c)is not correct option.

Learn more about polynomial here: https://brainly.com/question/11536910

#SPJ2

Final answer:

The correct polynomial with zeros of 2, 5, and -4 is represented by Option C, which is (x - 2)(x - 5)(x + 4), even though there is a typo in the option provided.

Explanation:

The zeros of a polynomial are the values for which the polynomial evaluates to zero. These are also the solutions to the equation obtained by setting the polynomial equal to zero. Given the zeros of 2, 5, and -4, we can form a polynomial by finding the factors associated with each zero and then multiplying those factors together.

The factor associated with the zero 2 is (x - 2), the factor for the zero 5 is (x - 5), and the factor for the zero -4 is (x + 4). Multiplying these factors will give us the polynomial that has these zeros:

P(x) = (x - 2)(x - 5)(x + 4).

Comparing this expression with the options provided:

Option A is incorrect because it has factors of (x + 2) and (x - 4), implying zeros of -2 and 4.Option B is incorrect because it has the factor of (2x - 4), which simplifies to (x - 2), but includes the incorrect (x + 4).Option C is correctly formed with (x - 2)(x - 5)(x + 4), despite the typo, and represents the polynomial with the given zeros.Option D is incorrect, similar to option B.

Therefore, the correct answer is Option C, which is (x - 2)(x - 5)(x + 4).

For the sides, round your answer to the nearest tenth.

DE =

EF =

DF =

Is the triangle scalene, isosceles, or equilateral?
HELPP!!

Answers

Answer:

it should be scalene

Step-by-step explanation:

DE: [tex]\sqrt{90}[/tex]

^^ [tex]\sqrt{(-1-8)^{2}+ (-3--6)^{2} }[/tex]

[tex]\sqrt{-9^{2} +3^{2}[/tex]

[tex]\sqrt{81+9}[/tex]

EF:[tex]\sqrt{65}[/tex]

^^[tex]\sqrt{(-2+1)^{2} + (5+3)^{2} }[/tex]

[tex]\sqrt{-1^{2}+8^{2}[/tex]

[tex]\sqrt{1+64}[/tex]

DF= [tex]\sqrt{101}[/tex]

^^

Match the angle measures with the value of x in each triangle. i!mages below!
145°
33°
46°
124°
60°

Answers

Step-by-step explanation:

left side X°=33(i.e 75+72+x=180)

left side down x°= 60°

right side=145°

right side down= 124

For PLATO Users here is the correct matching

I need The answers for U,V and W

Answers

Answer:

U=30

W=2.25

tho I’m not sure about v

Answers:

U: 5 + 13 + 12 = 30 cm

V: 8 + 7 + 4 + 3,5 = 22,5 ft

W: 2 1/8 + 6 3/4 + 2 = 2 + 0,125 + 6 + 0.75 + 2 = 10,875 mm

Joan draws a bar chart to show the temperatures at midday
on March 1st in five cities.
Joan has made four mistakes
in her diagram.
Write down any three of them.

Answers

Final answer:

Possible mistakes in Joan's bar chart could be incorrect scale, inaccurate labeling, and inconsistent bar lengths. Correcting these errors would make the chart a more accurate representation of the temperature data.

Explanation:

Without the specific bar chart, it is difficult to identify Joan's mistakes, but possible errors in a bar chart depicting temperatures could be the following:

Incorrect scale: The scale of the bar chart must correspond to the range of temperatures. For example, if temperatures vary from 15 degrees Celsius to 35 degrees Celsius, the scale should encompass this range.Incorrect labeling: Each city and corresponding temperature should be accurately labeled on the chart.Inconsistent bar lengths: The length of the bars should represent the actual data accurately. A higher temperature should have a longer bar and a lower temperature a shorter one.

Learn more about Bar Chart Mistakes here:

https://brainly.com/question/32121650

#SPJ3

Can someone please give me the right answer to this question please???

Answers

Answer:

x=87 degrees

Step-by-step explanation:

Answer:

The answer is 87 degrees.

Step-by-step explanation:

All angles in a triangle add up to 180 degrees

37 + 56 = 93

180 - 93 = 87

Lin plays a game that involves a standard number cube and a deck of ten cards numbered 1 through 10. If both the cube and card have the same number, Lin gets another turn. Otherwise, play continues with the next player. What is the probability that Lin gets another turn?

Answers

Answer:

6/60

Step-by-step explanation:

The probability that Lin gets another turn, P(E) could be 6/60

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

We are given that Lin plays a game that involves a standard number cube and a deck of ten cards numbered 1 through 10.

Therefore,

P(E) = Number of favorable outcomes / total number of outcomes

Outcomes of cube = { 1, 2, 3, 4, 5, 6}

Outcome of Card = {1, 2, 3} from each group.

when both the cube and card have the same number, then Lin gets another turn.

The probability that Lin gets another turn, P(E) =6/60

P(E) = 1/10

Learn more about probability here;

https://brainly.com/question/9326835

#SPJ6

What is the answer to this

Answers

Answer:

I'm not totally sure but i want to help as best i can the graphs i narrowed it down to are a and c because the equation is less than or equal to its a dotted line and i think it would be answer c

Step-by-step explanation:

Before soccer practice Allyson jogs around the field that measures 100 yards by 65 yards twice. How far will she jog?

Answers

Answer:

she will jog 660

Step-by-step explanation:

(100+65)×2=1 lap

330×2=2 laps (660yards)

Final answer:

Allyson will jog around the perimeter of the soccer field twice, which totals 660 yards.

Explanation:

Allyson is jogging around a soccer field that has dimensions of 100 yards long and 65 yards wide. To find out how far she will jog, we need to calculate the perimeter of the field and then multiply it by the number of times she jogs around it.

Calculating the Perimeter:

The perimeter P of a rectangle is given by P = 2(length + width). In this case:

Length (L) = 100 yardsWidth (W) = 65 yards

So the perimeter of the soccer field is:

P = 2(100 yards + 65 yards) = 2(165 yards) = 330 yards.

Total Distance Jogged:

Since Allyson jogs around the field twice, the total distance she will jog is:

Total Distance = Perimeter × Number of Laps = 330 yards × 2 = 660 yards.

Therefore, Allyson will jog a total distance of 660 yards.

The total weight of the golf balls from Julio's golf bag was 273 grams. If each golf ball weighed 45.5 grams, which graph
shows the weight of golf balls as it relates to the number of golf balls?
Weight of Golf Balls
Number of Golf Balls
Weight (in grams)
45.5
273

Answers

Answer:

Attached graph

Step-by-step explanation:

Since all the six balls have same weight and the total weight is given as 273g, then weight of one ball will be

273/6=45.5 g

1 ball=45.5 g

2 balls =2*45.5=91 g

3 balls =3*45.5=136.5 g

4 balls=4*45.5=182 g

5 balls =5*45.5=227.5 g

6 balls =6*45.5=273 g

Since the graph to select is not given, I attached ny own sketch. Any other graph with these corresponding figures in x and y axis as indicated will be correct.

Answer:

A

Step-by-step explanation:

Since all the six balls have same weight and the total weight is given as 273g, then weight of one ball will be

273/6=45.5 g

1 ball=45.5 g

2 balls =2*45.5=91 g

3 balls =3*45.5=136.5 g

4 balls=4*45.5=182 g

5 balls =5*45.5=227.5 g

6 balls =6*45.5=273 g

Since the graph to select is not given, I attached ny own sketch. Any other graph with these corresponding figures in x and y axis as indicated will be correct.

For homework, Anya had to find the width of a bedroom after the scale changed from 1 inch : 4 feet to 1 inch : 7 feet. Her work is shown below.

Answers

Answer:

The correct answer is A!!

Step-by-step explanation:

Answer:

the first one

Step-by-step explanation:

a

Find the value of x.

Answers

what is the value of.

Answer:

x = 12

Step-by-step explanation:

By property of intersecting secants outside of a circle:

[tex]x \times 15 = 20 \times 12 \\ x = \frac{20 \times 12}{15} \\ x = \frac{20 \times 3}{5} \\ x = 4 \times 3 \\ x = 12[/tex]

331 students went on a field trip. six buses were filled and 7 students travled in cars. how many students were in each bus

Answers

Answer:

54 Students in each bus

Step-by-step explanation:

331-7= 324

324/6 = 54

you have to initially subtract 7 fro 331 because they took cars. the rest of the students took the 6 buses.

now you are left with 324/6 which gives you 54 students per bus

Other Questions
HELP ASAP PLEASE!!!Which of the following lines are parallel?a. line c and line db. line b and line cc. line a and line bd. line d and line eYou may pick more than one. The ratio of nickels to dimes that Wade had saved in his bank was 10/13. If total number of nickels and dimes saved was 391, how many of them were dimes? When did fuedalism begin Residual income is Select one: A. the excess of investment center income over the minimum return set by management. B. income beyond the breakeven point determined by the product's lifecycle. C. excess income earned after budgeted income has been achieved. D. a percentage of income received by an organization for its participation in a joint venture. A 36-year-old male was accidentally shot with a nail gun into the chest. You see the nail, which protrudes about 2 to 3 centimeters from the thorax, when you visualize the injury site. Under which of the following circumstances should you remove the nail from the injury site?A. Bleeding from the patient's wound is minimal.B. The patient develops a tension pneumothorax.C. The patient begins to complain of shortness of breath.D. None of the above The length of the base of an isosceles triangle is x. The length of a leg is 3x-6. The perimeter of the triangle is 51. Find x You come up with what you think is a great idea for a new advertising campaign for your company. Your boss is worried that the ads will cost a lot of money and she wants to be 99% confident that the ads increase sales before rolling the new ads out nationwide. You run the ads in a typical city and take a random sample to see if people who saw the ad are more likely to buy the product. When you reported the results to your boss, you made a Type II error. 18. Explain in words the statistical meaning of this type of error. Please helppppppppppp Jaquan found 2 footballs in his closet to practice throwing long distances. Both footballs are of equal size. However, one has a mass of 1 kg and the other is 2 kg. Which football will travel the farthest distance when thrown and why? Or will they travel the same distance? Why did Franklin Delano Roosevelt agree to desegregate the defenseindustry? can someone please help !!!!!!!!!!!!!!!! "In the far future, a starship becomes trapped inside the event horizon of a black hole. Although the crew discovers that their ship cannot out, they at least want to send a message to other ships in the area to stay away from the danger zone. If they send out a message in the form of a radio wave, what will be its fate? Construct a linear equation in standard form. The triangle shown below has an area of 121212 units^2 2 squared.Find xxx. According to the chart, Indias voter turnoutA)reached its peak in 1990.B)is the lowest in all of Asia.C)has decreased over the past 20 years.D)has increased over the past 20 years.Eliminate 40 POINTS! Please look at the two small pictures below. Here are the questions.7. a) Write a multiplication statement to represent the algebra tiles. (picture #1)b) If the tiles below are divided by 2x, what is the quotient? Hinduism teaches all of the following concepts except __________. felipe is training to run a marathon. today he ran 24 miles in 2.5 hours. at what rate did felipe run today? How would one be able to apply algebra to solve a random number problem? what are the ten times tables