3. Simplify: 72 +8 [180 + 4 {10 + (15 - 45 - 9 x 2)}] simplify ​

Answer:

450 miles

Step-by-step explanation:

First you calculate miles per gallon, which you do by dividing 300/20. This gives us 15. So you can go 14 miles on one gallon.

From there you multiply 15 by 30, since you'll be driving 30 miles. This gives us 450 miles.

Step-by-step explanation:

[tex] \frac{300}{x} \times \frac{20}{30} = \frac{20x}{20} \frac{9000}{20} x = 450miles[/tex]

Answer:

The constant of proportionality of the equation is 1.5.

Step-by-step explanation:

Equation of proportional measures:

Suppose that y and x are proportional measures. This situation can be equatialized is:

y = ax

In which a is the constant of proportionality.

y = 1.5x. What is the constant of proportionality of the equation?

a = 1.5, so the constant of proportionality of the equation is 1.5.

Answer:

1560 cm²

Step-by-step explanation:

4*5*22 = 440 cm²

25*8*10 = 2000 cm²

find the difference between the two numbers to find the volume of the solid part of the box

Brₐinliest plz close to leveling up

Answer:

x=2

Step-by-step explanation:

Answer:

x = 2

Step-by-step explanation:

2x = 5x-6

Subtract 5x from each side

2x-5x = 5x-6-5x

-3x = -6

Divide by -3

-3x/-3 = -6/-3

x = 2

Answer:

29/11 = 2 7/11

Step-by-step explanation:

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Answer:

2.636

The 63 keeps repeating itself so you can add a line above the 63 instead.

Answer:

90 degre i cant wright the small o thing but is 90

Step-by-step explanation:

Answer:   (0.00027144,  0.00036176)

Step-by-step explanation:

The sample proportion of cell phone users who develop cancer of the brain or nervous system = [tex]\dfrac{133}{420027}=0.0003166[/tex]

Sample size : 420027

Confidence interval for p: [tex]\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}[/tex], where [tex]\hat{p}[/tex]= sample proportion , n= sample size , z* = crirical z value.

For 90% confidence interval , z*= 1.645

Required confidence interval:

[tex]0.0003166\pm (1.645)\sqrt{\dfrac{0.0003166(1-0.0003166)}{420027}}\\\\=0.0003166\pm 0.00004516\\\\=(0.0003166-0.00004516,\ 0.0003166+ 0.00004516)\\\\=(0.00027144, \ 0.00036176)[/tex]

A ​90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system = (0.00027144,  0.00036176)

Answer:

126 degree

Step-by-step explanation:

use alternate angles and linear pair

Answer:

a-70

Step-by-step explanation:

28+42=70

Hi!

7|H| + 4G = 7 * |-6| + 4 * 7 =

= 7 * 6 + 4 * 7 = 42 + 28 = 70

Grettings!

Answer:

(4,8) is the answer.

Step-by-step explanation:

To solve by substitution, you need to isolate a variable. The bottom equation already has y isolated, so we can just plug that into the other equation:

[tex]2x=-2x+16[/tex]

Add [tex]2x[/tex] to both sides in order to get rid of the [tex]-2x[/tex] on the right side:

[tex]4x=16[/tex]

Now divide by 4 on both sides to get:

[tex]x=4[/tex]

That gives us our x. Now plug in that x into either equation. I will just choose the bottom equation:

[tex]y=2(4)\\y=8[/tex]

Therefore the solution to this problem is (4,8).

Answer:

49

Step-by-step explanation:

because, A right angle has an angle of 90° degree

so, 41+49

= 90

hence, proved.

if it helps don't forget to like and mark me

Answer:

400 seconds

Step-by-step explanation:

150/20 m/s

vt = d

t=d/v

t = 3000m / (150/20m/s)

t = 400 sec

Leave a like and mark brainist if this helped

Answer:

B. y = 3x - 14

The required distance of  Leek from Reidville directly is 186.82 miles.

Given that,
An airplane is flying from Reidville to Leek. The airplane flies 50 miles East and then 180 miles south. How far is Leek from Reidville directly is to be determined.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,
The direct distance can be given as,
x = √[50² + 180²]
x = √34900
x = 186.82

Thus, the required distance of  Leek from Reidville directly is 186.82 miles.

Learn more about arithmetic here:

brainly.com/question/14753192

#SPJ2

Answer:

answer will be A. (2x-3)(2x+3y)

Answer: I got 144cm I'm not sure if its right though

Step-by-step explanation:

I did 12x6=72 then I did 72+72=144

Answer:

55% drop.

Step-by-step explanation:

To find this first divide 63 by 140 to get .45. Then multiply this value by 100 to get a value of 45%. Then you know that 55% is the amount dropped.

Answer:

[tex]Fraction = \frac{3}{5}[/tex]

Step-by-step explanation:

Given

[tex]Fraction = \frac{12}{20}[/tex]

Required

Rename using division

This simply means that we reduce the fraction

So, we have:

[tex]Fraction = \frac{12}{20}[/tex]

Divide by 4/4

[tex]Fraction = \frac{12/4}{20/4}[/tex]

[tex]Fraction = \frac{3}{5}[/tex]

Answer:

1 cheese is left over.

Step-by-step explanation:

Given that,

1219 kg of Swiss cheese is packaged in 3 kg bags.

i.e. 3 kg bags = 1219 kg of Swiss cheese

Implies, 1 kg bag = [tex]\dfrac{1219}{3}[/tex] kg of swiss cheese

If we divide 1219 by 3, we get [tex]46\dfrac{1}{3}[/tex]. Here, 46 is the quotient and  1 is the remainder.

It means 1 cheese is left over.

Answer:

x=3

y=15

Step-by-step explanation:

y=5x

y=-4x+27

5x=-4x+27

+4x +4x

9x=27

/9 /9

x=3

y=5x

y=5(3)

y=15

Answer:

3c + 43 >_ 100

Step-by-step explanation:

Answer:

Individual error rate = 0.01

Therefore, Option b) 0.01 is the correct answer

Step-by-step explanation:

Given the data in the question;

family wise error rate ∝ = 0.05

there are ten levels of one factor but

important comparisons m = 5

the individual error rate need to be for each of those 5 comparisons = ?

we know that;

individual error rate = family wise error rate ∝ / important comparisons m

so we substitute

individual error rate = 0.05 / 5

individual error rate = 0.01

Therefore, Option b) 0.01 is the correct answer

Answer:

317.21 (sales price)

259.53 (discount amount)

Step-by-step explanation:

First, we need to divide.

576.75/100=5.7675 (note that I will be rounding at the end)

5.7675 x 55 (100-45) = 317.2125

Rounds to: 317.21

Now, we need to find the discount amount.

 576.75

-317.21

=259.53

Answer:

f(x) is another way to write y.

You have y = 6x - 8.

To find the inverse, switch the x and the y and solve for the new y.

Switching gives you x = 6y - 8.

You add 8 to both sides to give you 6y = x + 8.

Divide both sides by 6 gives you the inverse as y =1/6x + 4/3

Step-by-step explanation:

Answer: uh explain more about the question cause im bad at this sorryyyy :')

Step-by-step explanation:

have a good day im sorry i feel for weird right now heh..

Answer:

True - Keep the first fraction the same then flip to solve the MULTIPLICATION problem

Step-by-step explanation:

Answer:

It would be A, True - Keep the first fraction the same then flip to solve the MULTIPLICATION problem.

Step-by-step explanation:

Answer:

(C). 155°

Step-by-step explanation: