Evaluate the expression when x=3 and y=5 2xy

Answers

Answer 1

Answer:

30

Step-by-step explanation:

Substitute for x and y

2 x 3 x 5 = 6 x 5 = 30


I hope this helped and please mark mark me as brainliest!

Answer 2
The answer is 30 because 2(3)(5) equals 30

Related Questions

Mathieu grows specialty tomatoes that are much larger than typical tomatoes. The distribution of their weights is strongly skewed to the left with a mean of 232g and a standard deviation of 12g. Suppose we were to calculate the mean weight from a random sample of 16 of Mathieu's tomatoes. We can assume independence between tomatoes in the sample.
What is the probability that the mean weight from the sample of 16 tomatoes x is within 6g of the population mean?

Answers

Answer:

We cannot calculate this probability because the sampling distribution is not normal.

Step-by-step explanation:

Since the parent population is not normally distributed, the small sample size will result in a sampling distribution that isn't normal.

What is the volume of this sphere?
Use a 3.14 and round your answer to the nearest hundredth.
6 yd

Answers

Answer:

Volume = 904.78 yards

Step-by-step explanation:

The formula for a sphere is:

V=4/3πr³

Since we already know that the radius is 3 yards and that π is 3.14 all we have to do is plug in the numbers.

V=4/3(3.14)(6)³

V=4/3(3.14)(216)

V=4.1897(216)

V≈904.78 yards


In one U.S. city, the taxi cost is $5 plus $0.90 per mile. If you are traveling from the airport, there is an additional charge of $3.50 for tolls. How far can you travel from
the airport by taxi for $40.00?

Answers

Answer:

35 miles

Step-by-step explanation:

At the start, you lose $8.5 for tolls and the taxi cost.
You're left with $31.5 after that, every mile costs you $0.9, so you can go 31.5 : 0.9 = 35 miles.

100 points once again, if you answer with nonsense I will report you:
Jackson made a drawing for his residence including a villa and a garden, as in the given figure. Using the scale drawing, what is the perimeter of the villa in real life?

Answers

Answer:

60 meters.

Step-by-step explanation:

Here the villa has length of 6 cm and breadth of 4 cm

Find perimeter using:

2(length + breadth)

2(6 + 4)

20 cm

Here in scale the drawing perimeter is 20 cm

3 meter = 300 cm ......this is for real.

1 cm here --> 20 cm

300 cm in real --> (20*300) cm

Real perimeter = 6000 cm

If 6000 cm converted to m:

(6000/100) = 60 meters.

Find perimeter using:

[tex]2(length + breadth)[/tex]

[tex]2(6+4)[/tex]

[tex]20 cm[/tex]

Here in scale the drawing perimeter is [tex]20 cm[/tex]

[tex]3 meter = 300 cm [/tex]

[tex]1 cm → 20 cm[/tex]

[tex]300 \: cm → (20×300) cm[/tex]

[tex]Real \: perimeter = 6000 cm[/tex]

If [tex]6000 \: cm[/tex]converted to m:

[tex](\frac{6000}{100}) = 60 \: meters[/tex]

If f(x) = x + 1 and g(x) = x^3, the function (fοg)(x) is:

Answers

Answer:

x³ + 1

Step-by-step explanation:

to evaluate (f ○ g)(x) , substitute x = g(x) into f(x)

f(g(x) )

= f(x³)

= x³ + 1

In the figure shown below, the area of the large rectangle is (5x)(8x + 1) and the area of
the small rectangle is (4x)(2x), which of the following expressions represents the area of
the shaded region?
HELP

Answers

Answer:

ok so the shaded area will be the larger rectange minus the smaller one so lets find the area of both by multiplying the sides

(5x)(8x+1)=40x^2+5x

(4x)(2x)=8x^2

so

40x^2+5x-8x^2

32x^2+5x or

x(32x+5)

so a

Hope This Helps!!!

Brainliest if correct

Answers

Answer:

-6

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

3(-2)(-1)(-1)= -6

[RevyBreeze]

A bike with an original price of 90$ is discounted 40%. What is he sale price

Answers

Answer:

$54

Step-by-step explanation:

Original Price = $90

Discounted = 40%

Percent to decimal 40% = .40

$90 x .40=36 ( 36 is the Discount)

$90 - 36=54

Sale Price = $54

Hence, Sale Price = $54

[RevyBreeze]

Which is greater 24.005 or 24.05

Answers

Answer:

24.05

Step-by-step explanation:

24.005 has more numbers but worth less

24.05 is more

Write an equation of a line that passes through -4, -4 and 4,4

Answers

Answer: y=x

Step-by-step explanation:

The slope is (y2-y1)/(x2-x1) = 8/8 = 1

Plugging it into the equation y = mx+b:

y = x + b

Plugging in one of the coordinates:

4 = 4+b

b = 0

Therefore, the equation of the line is y=x

The trapezoids below are similar. Find z.

Answers

92+88=180°

ratio remains same.

[tex]\\ \tt\longrightarrow \dfrac{2}{14}=\dfrac{7}{2z}[/tex]

[tex]\\ \tt\longrightarrow 4z=14(7)[/tex]

[tex]\\ \tt\longrightarrow 4z=98[/tex]

[tex]\\ \tt\longrightarrow z=98/4[/tex]

[tex]\\ \tt\longrightarrow z=24.5[/tex]

i need help with math asap

Answers

I’m pretty sure the answer is y=-2x

[tex]\huge\blue{\mid{\fbox{\tt{\:ANSWER\:}}\mid}}[/tex]

[tex]y=-2x[/tex]

____________________

The graph,

Kira is a lovable dog who is full of energy. Her owner thought it would be fun to train her by throwing a frisbee for her to catch. When the frisbee is thrown, it follows a parabolic path that is modeled by the function h(t) = – 0.145t2 + 0.019t + 5.5. How many seconds will it take for the frisbee to hit the ground?

–6.2 seconds
–6.1 seconds
5.5 seconds
6.2 seconds

Answers

Answer:

6.2 seconds

Explanation:

             Given function: h(t) = – 0.145t² + 0.019t + 5.5

Here h(t) which determines the height, when Frisbee touches the ground, the height shall be 0.

solve the quadratic equation:  

using the formula:  [tex]\left[\begin{array}{ccc} t = \frac{ -b \pm \sqrt{b^2 - 4ac}}{2a}\end{array}\right][/tex]

Solving steps:

→  –0.145t² + 0.019t + 5.5 = 0

→  [–0.145t² + 0.019t + 5.5 = 0 ]* 100

→  -145t² + 19t + 5500 = 0

→  [tex]t = \frac{ -19 \pm \sqrt{19^2 - 4 ( -145)(5500)}}{2(-145)}[/tex]

→  [tex]t_1=\frac{-19+\sqrt{3190361}}{2\left(-145\right)},\:t_2=\frac{-19-\sqrt{3190361}}{2\left(-145\right)}[/tex]

→  [tex]t = -6.09[/tex] , [tex]t = 6.2[/tex]

→  [tex]t = 6.2[/tex]

Time cannot be negative here.

So time taken: 6.2 seconds.

Answer:

D. 6.2 seconds

Step-by-step explanation:

When the frisbee hits the ground, the value of h is zero.

Find the time required:

– 0.145t² + 0.019t + 5.5 = 0145t² - 19t - 5500 = 0t = (19 + √(19² + 4*145*5500))/290 = (19 + 1786,1)/290 = 6.2 seconds (rounded)Note, taking positive root only as time is never negative

Drag each value to the correct location on the table.
Identify whether each cube root or square root lies between 2 and 3, 4 and 5, or 9 and 10.
3\/101
\/90
3\/90
3\/20
\/20
\/7
8\/800

Between 2 and 3
Between 4 and 5
Between 9 and 10
PLEASE HELP!!!

Answers

I think it’s C I could be wrong .


A small college had 7,500 students enrolled in 2010, and the number of students enrolled has increased by 3% each year since. If f(n) represents the number of students enrolled n years after
2010, then which function best represents its value?

Answers

Answer:

7800

I already take a homework with this question

What is the fraction of 1/2+1/3=

Answers

1/6 would be the fraction of 1/2+1/3= 1/6!

Answer:  [tex]\frac56[/tex]

Work Shown:

[tex]\frac{1}{2}+\frac{1}{3}\\\\\frac{3}{6}+\frac{2}{6}\\\\\frac{3+2}{6}\\\\\frac{5}{6}\\\\[/tex]

To visualize this, cut up a circle into 6 equal pieces.

3 of those pieces represent half the circle (3/6 = 1/2)

2 more pieces represent one third (2/6 = 1/3)

We have 3+2 = 5 pieces out of 6 total. This is visual confirmation that 1/2 + 1/3 = 5/6

Larry wants to buy a car cover for his vintage corvette. His car is 15 feet in length, but car covers are only sold in yards. Choose the cover that fits Larry's corvette best.
A) 3 yards
B) 5 yards
C) 7 yards
D) 45 yards

Answers

Answer:

5 yards

Step-by-step explanation:

15/3=5

Roger pays $2,240 in rent every month. This amount is $180 more than four times what his brother Raul pays for rent. How much does Raul pay for rent?

Answers

180 x 4 = 720
2,240 - 720 = 1,520
Raul pays 1,520 for rent

What is the answer
7a-9b+6a-4b

Im having problems with this and need an answer with explanation if is positive maybe that way can be more easy to understand

Answers

13a-13b
This is because you have to add/subtract your like variables. So 7a + 6a=13a. Then you have -9b-4b=negative 13b. So 13a-13b

james has 202 cookie his friend wanted 132 cookies how much is the amount?

Answers

334

202 cookies plus 132 = 334

70 PTS will mark brainly

This is Josh’s solution for the equation x^2-6x-7=0
x^2-6x-7=0
x^2-6x=7
x^2-6x+9=7+9
(x-3)^2=16
x-3=16
x=19
x-3=-16
x=-13

explain what mistake he made on step 5 which is x-3=16

Answers

Answer:

See below.

Explanation:

easy way to solve:

[tex]x^2-6x-7=0[/tex]

[tex]x^2+x-7x-7=0[/tex]

[tex]x(x+1)-7(x+1) =0[/tex]

[tex](x-7)(x+1)= 0[/tex]

[tex]x = 7, -1[/tex]

Mistake:

In step 5,

Josh should have given:

[tex](x-3)^2=16[/tex]

[tex]x-3 = \pm \sqrt{16}[/tex]     [ changing sides changes square sign to [tex]\pm[/tex] square root ]

[tex]x-3 = \pm 4[/tex]

[tex]x -3 = 4[/tex], [tex]x-3 = -4[/tex]

[tex]x = 7[/tex], [tex]x = -1[/tex]

Of students in the AP curriculum at a prep school, 40% take one AP exam, 45% take two AP exams, and the remaining 15% take 3 AP exams. The highly desirable score of 5 is hard to earn, and only 20% of these students will earn a 5 on any given exam they take. Assuming their results on each exam are independent, what is the probability a student in the AP curriculum will earn at least one 5

Answers

It should be noted that the probability that a student will earn at least one 5 will be 0.3152.

How to calculate the probability

Test P(x). P(at least one 5)

1. 0.4. 0.2

2. 0.45. 0.36

3. 0.15. 0.488

Therefore, the probability that a student in the AP curriculum will earn at least one 5 will be:

= (0.4 × 0.2) + (0.45 × 0.36) + (0.15 × 0.488)

= 0.3152

In conclusion, the correct option is 0.3152.

Learn more about probability on:

https://brainly.com/question/24756209

If point A, shown on the coordinate plane below, is reflected over both axes to create A’, what will be the coordinates of A’?


(-6, 3)
(-6, -3)
(6, -3)
(6, 3)

Answers

Answer:

  (c)  (6, -3)

Step-by-step explanation:

Reflection over both axes is the same as reflection across the origin, or rotation 180° about the origin. It has the effect of negating both coordinates:

  (x, y) ⇒ (-x, -y) . . . . . reflection over both axes

The coordinates of A are (-6, 3), so the coordinates of A' will be ...

  A(-6, 3) ⇒ A'(6, -3)

you have 5 apples, multiply it by x, and get 1345. What is x?

Answers

Answer:

x = 269

explanation:

5 apples multiplied by x and equals to 1345

solve:

5 * x = 1345

x = 1345/5

x = 269

Therefore x is 269.

note: changing sides changes multiplication(*) to division(/) and division(/) to multiplication(*).

Answer:

x = 269

Step-by-step explanation:

For this question, they are asking you to create a problem out of the information given. For this problem, we will require the use of division. Before we can solve, we need to create the problem first.

Because the problem says 5 multiplied by x, we have to multiply these two. (Important:) Anytime you are multiplying a coefficient (5 in this case) by a variable (x in this case) we have to put the coefficient in front of the variable, like this:

5x _ ___.

Now that we know that, the question states that this basically equals 1345. With that said, that just gave us the rest of the problem. Now let's put it together:

5x = 1345.

Now we can solve. To single out the variable (x) to find our answer, divide 5 into 1345:

5x = 1345

5        5

So, 1345 ÷ 5 = 269. After that, we are left with x and 269 (because the 5 was canceled out with the division). So, the answer is:

x = 269.

I hope that this helps.

The base diameter and the height of a cone are both
equal to x units
Which expression represents the volume of the cone, in
cubic units?

Answers

Answer:

D

Step-by-step explanation:

V=(1/3)(pi)(r^2)(h)

=(pi/3)((x/2)^2)(x)

=(pi/3)(x^2/4)(x)

=x^3 * pi/12

Answer:

D

Step-by-step explanation:

One-twelfthπx3

What is the value of the expression: 4(n+13) where n=5

45

235

72

41

Answers

The correct answer is 72

Answer:

72

Step-by-step explanation:

=> 4(n+13)

putting the value of n which is 5

=> 4(5+13 )

=> 4(18)

=> 72

Solve these equations
1. 3x^2-16x-10=-15x
2. (3x - 7)(2x + 5) = 0
3. 2x + 5 - 3x = 4x + 17 + x
4. x^2 - 49 = 0
5. x^2 + 8x + 12 = 0
6. 0= (2x^2 - 3x + 5) - (x^2 + x + 37)
7. 12x^2 + 4x - 1
8. x^2 - 7x + 12
9. 6x^2 - 3x - 3

Answers

Answer: 1. x=2,-5/3

Step-by-step explanation:

Austin surveys 60 women in an apartment building to determine the most preferred form of exercise they perform on a regular basis. he tabulates the results as shown​

Answers

The answer is D because 34% of 1000 is 340

Find the factored form of the expression.
3x^2 + 300 = 0

Answers

Answer:

x = 10i - 10i

Step-by-step explanation:

3x^2 + 300 = 0

3(x^2 + 300) = 0

x^2 + 100 = 0

x^2 = -100

x = -100 (sqr root)

x = 10i - 10i

Hope this is more of the answer you where looking for.

Answer:

10

Step-by-step explanation:

it just is

Awnser down below!

⬇ ⬇ ⬇

Answers

Answer:

1. 103        

2. 156

3. 114
4. 115.14

5. 140

6. 123.8

7. 120.28

8. 107

Step-by-step explanation:

Answer:

hope it helps you :)) !

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