Simplify the following polynomial expression. 3x( 4x+5) -4 (-x-3) (2x -5)

Answer:

y=kx

2=k.-4

k=-1/2

then

y=-1/2×20

y=-10

Answer:

y = - 10

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 2 when x = - 4, that is

2 = - 4k ( divide both sides by - 4 )

\(\frac{2}{-4}\) = k, that is

k = - \(\frac{1}{2}\)

y = - \(\frac{1}{2}\) x ← equation of variation

When x = 20, then

y = - \(\frac{1}{2}\) × 20 = - 10

Answer:

correct

Step-by-step explanation:

you got numebr 1 correct you can do this use all the numbers you can think of.

The smallest number is the one closest to zero, or after zero, if it's a negative number, while the largest number is the number with the largest difference from the smallest, or the highest of value (not considering all situations). Usually, you would use the ascending order method for graphing numbers based on their value, which is indeed smallest to largest. According to thefreedictionary.com, "A function or variable continuously approaching zero as a limit." Tip: In ordering numbers based on value, the whole numbers that aren't negative are considerably believed to be the easiest numbers to order.

With that being said, here is the order of the numbers from smallest to largest:

4.38

4.5

4.6

4.9

Answer:

Here are the numbers ordered from closest to zero to farthest from zero:

4.38 (closest to zero)

4.5

-4.6

-4.9 (farthest from zero)

Step-by-step explanation:

Answer:

1:-2x(even)+2x(even)=4x(even)

7x(odd)+7x(odd)=14x(even)

Step-by-step explanation:

hope it helps

Answer:

1:-2x(even)+2x(even)=4x(even)

7x(odd)+7x(odd)=14x(even)

Step-by-step explanation:

use odd and even numbers

<3<3<3 hope this helps

Answer:

1,067/ 10,000 or one thousand sixty seven over ten thousand.

Answer:

32 miles per 1 gallon.

Step-by-step explanation:

8 goes into 256 32 times, so the unit rate is 32/1. 32 miles per 1 gallon. So divide 256 by 32 and you'll get 8.

Step-by-step explanation:

30+s=180

s=180-30

s=150

Answer:

k=9

Step-by-step explanation:

\(slope = \frac{y2 - y1 }{x2 - x1} \\ \frac{ - 5}{2} = \frac{ - 11 - k}{6 - ( - 2)} \\ - ( \frac{5}{2} ) = - ( \frac{11 + k}{8} ) \\ \frac{5}{2} = \frac{11 + k}{8} \\ 5 \times 8 = 2(11 + k) \\ 40 = 22 + 2k \\ k = \frac{40 - 22}{2} \\ k = 9\)

Answer:

area of large triangle=1/2× 14×9=63

area of small triangle=1/2×4××14=28

total area=63+28=91

Part C is the answer

mark me brainliest pls

Answer:

that is 316, 800 feet per hour for the swordfish

and 300,000 meters per hour for the passenger train

Step-by-step explanation:

multiply 60 by 5,280 because there are 5,280 feet in a mile

multiply 300 by 1000 because there are 1000 meters in a kilometer           *hence the prefix kilo

{11, 14, 22}

     Triangle Inequality Theorem states that two sides of a triangle must be greater than the third side.

     Using this method, the answer is {11, 14, 22} because 11+14>22, 11+22>14, and 14+22>11

x = 67°

Same-side interior angles are supplementary.

     x° + 113° = 180°

     x° = 180° - 113°

     x = 67°

r = 2°

     The little box represents 90 degrees, meaning that these angles are complementary.

     9r + 2° + 70° = 90°

     9r + 72° = 90°

     9r = 18°

     r = 2°

Answer:

i)      P(-1 ≤ z ≤ 1) = 0.6826

ii)     P(-2 ≤ z ≤ 2) = 0.9544

iii)    P(-2.61 ≤ z ≤ 0.57) = 0.7112

iv)      P(-0.95< z < 1.11) = 0.6954

Step-by-step explanation:

i)

P(-1 ≤ z ≤ 1) = P(  z ≤ 1 ) - P(z≤-1)

                  =  0.5 + A(1) - (0.5 - A(-1))

                  =    0.5 + A(1) - 0.5 + A(-1)

                  = A(1) + A(1)     (∵ A(-1) = A(1)

                  = 2 × A(1)

                  = 2×0.3413     ( From Normal table)

P(-1 ≤ z ≤ 1) = 0.6826

ii)

P(-2 ≤ z ≤ 2) = P(  z ≤ 2 ) - P(z≤-2)

                  =  0.5 + A(2) - (0.5 - A(-2))

                  =    0.5 + A(2) - 0.5 + A(-2)

                  = A(2) + A(2)     (∵ A(-2) = A(2)

                  = 2 × A(2)

                 = 2 × 0.4772

                  = 0.9544

P(-2 ≤ z ≤ 2) = 0.9544

iii)

        P(-2.61 ≤ z ≤ 0.57) = P( z ≤ 0.57)-P(z ≤-2.61)

                                       = 0.5 + A(0.57) - (0.5 - A(-2.61))

                                        = A( 0.57) + A( 2.61)       ( ∵ A(-2.61) = A(2.61)

                                        = 0.2157 +0.4955

                                        = 0.7112

       P(-2.61 ≤ z ≤ 0.57) = 0.7112

iv)

      P(-0.95< z < 1.11) = P( z ≤ 1.11)-P(z ≤-0.95)

                                   = 0.5 + A(1.11) - (0.5 - A(-0.95))

                                   = A( 1.11) + A( 0.95)   (∵ A(-0.95) = A(0.95)

                                  = 0.3665 + 0.3289

                                  = 0.6954

       P(-0.95< z < 1.11) = 0.6954

Answer:

845 miles

Step-by-step explanation:

First let us find the speed ( rate ) using the below formula.

\(\sf Speed=\frac{Distance \:\:travellled}{Time\:\:Taken}\)

\(\sf Speed=\frac{585 \:miles}{9 \:h}\)

\(\sf Speed=65\:miles\: per\: hour\)

They also said that, at the same speed he traveled for 13 hours.

So, now we have to find the distance.

For that, you can use the same formula by making the distance as the subject.

Let us find it now.

\(\sf Distance \:\:travellled=Speed\:*\:Time\:\:Taken\\\\\sf Distance \:\:travellled=65\:*\:13\\\\\sf Distance \:\:travellled=845 \:miles\)

Answer/Step-by-step explanation:

If he cuts one lawn each day on the weekend, how much money will he have after he has paid for gas, chocolate, and his cell phone?

earns - 30  pays - $10pb $2b  $5(this is for the 2 days)

SO he gets 30 but spends 19,

Meaning he gets $11 proffit.

30-19 =  $11

Evander would like the same stick that Alexander Ovechkin uses. The regular price is $229.99 (including taxes). How long will it take Evander to save enough money to buy the stick?

He makes $11 every week. so 229.99/11 = 20.9, so it will take him 21 weeks to get it.

When could Evander save enough for the stick if he stopped eating chocolate bars?

Ok so he would be getting 2 dollars more so that would make it $13. So 229.99/13 = 17.69, meaning it will take 18 weeks to get it.

Answer:

(3/2 m)^2 -(5n)^2^

Step-by-step explanation:

Answer: 9m^2 / 4  -  25n^2

Step-by-step explanation:

Use the identity: (a-b)(a+b)=a^2 - b^2
substitute values of a and b, where a=3/2m and b=5n.
The following simplifies to (3/2m)^2 - (5n)^2.

Answer:

84 ounces

Step-by-step explanation:

Total pounds of popcorn bought = 64 pounds

1/4th kept for family ==> 1/4 * 64 = 16 lbs

Remainder = 64-16 = 48 lbs

1/8th of remainder to club ==> 1/8 * 48 = 6 lbs to club

Remainder left over = 48-6 = 42 lbs

Distributed 42 lbs between each of 8 friends equally
Each friend gets 42/8 lbs = (42/8) * 16 = 84 ounces

Since there are 16 ounces in a pound

From the given information each friend receives 84 ounces of popcorn.

Let's solve the problem using thee concept of Fractions

1. Miriam bought 64 pounds of popcorn.

2. She kept 1/4 of the popcorn for her family. So, the amount of popcorn left after this step is \(\(64 \times \frac{3}{4}\)\).

Now, let's calculate the popcorn remaining after Miriam keeps some for her family:

\(\(64 \times \frac{3}{4} = 48\)\) pounds.

Next, Miriam gave 1/8 of the remaining popcorn to her club, leaving her with \(\(48 \times \frac{7}{8}\)\) pounds.

Now, let's calculate the popcorn remaining after Miriam gives some to her club:

\(\(48 \times \frac{7}{8} = 42\)\) pounds.

Finally, she distributed the rest equally among 8 friends. To find out how much each friend gets, we'll divide the total popcorn left by the number of friends:

Amount each friend gets =\(\(\frac{42}{8}\)\) pounds.

The problem asks for the answer in ounces, not pounds.

To convert pounds to ounces, we know that 1 pound is equal to 16 ounces. So, to get the amount of popcorn each friend gets in ounces, we'll multiply the previous answer by 16:

Amount each friend gets = \(\(\frac{42}{8} \times 16\)\) ounces.

Amount each friend gets = \(\(84\)\) ounces.

So, each friend will get 84 ounces of popcorn.

In summary, Miriam's 64 pounds of popcorn were reduced to 42 pounds after sharing with her family and club. Finally, the remaining popcorn was divided equally among her 8 friends, with each friend receiving 84 ounces.

To know more about Fractions here

https://brainly.com/question/29186998

#SPJ2

Step-by-step explanation:

The difference beteen 9.2 ounces and 8.1 ounces is  1.1 ounces

   and the difference in price is   .49

       so 1.1 ounces cost .49

           $ .49 / 1.1 oz = $  .445  per ounce

Then Reid's bowl should cost   7.8 oz  * $ .445 / oz = $3.47

Answer: The correct answer is:

Probability of rolling a number less than 3: 2/6 or 1/3

Step-by-step explanation:

Explanation: Out of the six possible outcomes (numbers 1, 2, 3, 4, 5, 6), there are two outcomes that meet the condition of rolling a number less than 3, which are 1 and 2. Therefore, the probability of rolling a number less than 3 is 2 out of 6, which simplifies to 1/3.

Probability of not rolling a number less than 3: 4/6 or 2/3.

Explanation: To find the probability of not rolling a number less than 3, we consider the outcomes that are not favorable (i.e., rolling a 3, 4, 5, or 6). There are four such outcomes, so the probability of not rolling a number less than 3 is 4 out of 6, which simplifies to 2/3. :D

Answer:

40.5 inches

Step-by-step explanation:

I’m not sure if this is correct or not but my thinking is that you just add 26.9, 8.5, and 5.1 together since it says “How much more snow fell in the one day storm in 2006 than normal falls in February and March combined?” And combined basically means all together.

Answer: 13.3 more inches of snow fell in one day storm than normally falls in February and March combined.

February and March combined: 8.5+5.1 = 13.6

Since the question asked how much more, that means you subtract:

26.9 - 13.6 = 13.3

hope this helped =)

-YinAhara

Answer:

60%

33.33%

50%

175%

40%

serially

Answer:

90

Step-by-step explanation:

when  you multiply two negative integers they always equal positive so in this case its (-9) x (-10), you can just do 9x10 which gets u 90

Multiplying two positive integers always result in a positive integer.

Multiplying two negative integers always result in a negative integer.

Multiplying a positive or negative integer always result in a negative integer.

Answer:

I will study about it and tell u

okk frd

Answer:

Step-by-step explanation:

U8bdcqb9di9bhqerf

Answer:

124/67 and 1/3

Step-by-step explanation:

The second ratio is 1.5/4.5, which readily reduces to 1/3.

Dividing both numerator and denominator of 24.8 / 13.4 by 2 yields the simpler 12.4 / 6.7  or  124/67.  This latter result cannot be reduced.

\(x/7 = 3.2 = x = 22.4\)