PLEASE HELP ITS PRE CALC LUV U

Its A i had the same one. Hope it helps.

Answer:

-4

Step-by-step explanation:

Do (y1-y2)/(x1-x2) so (3-(-5))/(0-2)

8/-2=-4

Answer:

2x-7y

8x+2y

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Profit is revenue minus cost.

P(x) = R(x) − C(x)

P(x) = 28x − (7x + 117)

P(x) = 21x − 117

When the profit is 0, the value of x is:

0 = 21x − 117

21x = 117

x = 5.6

Rounding up to the nearest integer, the company starts to turn a profit at 6 milkshakes.

Answer: [tex]\dfrac{665}{1496}[/tex]

Step-by-step explanation:

Given : In a group , there are 20 boys and 14 girls.

Total people = 20+14=34

Number of ways to choose 3 people out of 34 = [tex]^{34}C_3[/tex]

Number of ways to choose  1 girl and 2 boys = [tex]^{14}C_1\times^{20}C_2[/tex]

The  probability that 1 girl and 2 boys are selected = [tex]\dfrac{^{14}C_1\times ^{20}C_2}{^{34}C_3}[/tex]

[tex]\dfrac{14\times\dfrac{20!}{2!18!}}{\dfrac{34!}{3!31!}}\ \ \ [^nC_r=\dfrac{n!}{r!(n-r)!}]\\\\=\dfrac{14\times\dfrac{20\times19}{2}}{\dfrac{34\times33\times32\times31!}{3\times2\tims3!}}\\\\=\dfrac{665}{1496}[/tex]

Hence, required probability = [tex]\dfrac{665}{1496}[/tex]

Answer:

x2/3

Step-by-step explanation:

Just add 1/6 four times because of  the root.

Answer:

=  [tex]5\frac{2}{3}[/tex]Step-by-step explanation:

Answer:  Is this linear regression equation a good fit for the data? Why or why not? A. r = - .7622 , so this is a good negative correlation fit for the data . B. r = - .9919 , so this is a very good negative correlation fit for the data C. r = .9919 , so this is a very good positive correlation fit for the data . D. r = .7622 so this is a good positive correlation fit for the data .

Step-by-step explanation:

Answer:

64

Step-by-step explanation:

16 divided by 0.25 gives you 64 .... welcome

Answer:

64 km/h

I answered it correctly on a mid term

Let s be the speed of the person's kayak in still water.

Given, speed of current = 2 mph

Upstream distance = 9 miles

Speed of the person upstream = s-2

Time traveled upstream = 9/s-2

Downstream distance = 13 miles

Speed of the person downstream = s+2

Time traveled downstream = 13/s+2

Given,

9/s-2 = 13/s+2

Cross-multiplying,

9*(s+2) = 13*(s-2)

9s + 18 = 13s - 26

Grouping like terms together,

13s-9s = 26+18

4s = 44

s = 11 mph

Speed of person's kayak in still water = 11 mph

Answer: x = 39°, y = 5

Step-by-step explanation:

∠ADB and ∠CDB are same which means it's 90 degrees

and the triangle is isosceles, so ∠A=∠X and ∠ABD=∠CBD

180= ∠A + ∠B + ∠D

180= 51 + 90 + ∠D

∠D = 39 = x

for y I told you this is the isosceles triangle

so , AD = DC

Answer:

1 1/4 cup left

Step-by-step explanation:

.75 of a third is a fourth, so that would mean that 2/3 is .50, 75% of 2/3, is 0.50, 1/4 is 0.25, so that would mean .75, which is 3/4 cups, so that would mean he needs 1 3/4 cups, so he has 1 1/4 cup left

Answer:

Step-by-step explanation:

Triangles are not similar

[tex]\frac{11}{33}[/tex] ≠ [tex]\frac{8}{20}[/tex] = [tex]\frac{6}{15}[/tex]

[tex]\frac{2}{5}[/tex] = [tex]\frac{2}{5}[/tex] ≠ [tex]\frac{1}{3}[/tex]

Answer:

15 hours

Step-by-step explanation:

Kelsey + 4 sisters = 5 girls

Each of the 5 girls spent three hours cleaning

Usually, I would do 5 x 3 = c, but since we need to use a division equation, we should use c / 5 = 3 OR c / 3 = 5.

c/5 = 3

3 x 5 = 15

Check:     15/ 5 = 3

Answer:

-1, 1, 5

Step-by-step explanation:

Factor by grouping:

Factor out x² from the first two terms:

f(x) = x³ - 5x² - x + 5

f(x) = x²(x - 5) - x + 5

Factor out -1 from the last two terms:

f(x) = x²(x - 5) -1(x - 5)

Then, put the two terms together:

f(x) = (x² - 1)(x - 5)

(x² - 1) is a difference of squares that can be factored further:

f(x) = (x + 1)(x - 1)(x - 5)

Set this equal to 0, and set each factor equal to zero. Then, solve for x:

x + 1 = 0

x = -1

x - 1 = 0

x = 1

x - 5 = 0

x = 5

So, the zeroes are -1, 1, and 5

Answer:

(x-1)(x-5)(x+1)

Step-by-step explanation:

HOPE YOU UNDERSTOOD! !

Answer:

Sales Tax: $100.75

Total Price: $1400.75

Step-by-step explanation:

1,300 × .0775 = 100.75

1,300 + 100.75 = $1400.75

Answer:

Tax: $100.75

Total: $1,400.75

Step-by-step explanation:

1,300*0.0775 = 100.75, 1,300 + 100.75 = 1,400.75

Answer:

Step-by-step explanation:

3-8/2+3×5

3-4+3×5

3-4+15

-1+15

14.

So answer is 14.

Answer:

450

Step-by-step explanation: 90x 5 = 450  hoped i helped

Answer:

10.91%

Step-by-step explanation:

Take your number: 10.9091

Now find the first 3 decimals: 10.909

If the last (3rd) decimal is 5 or more raise the 2nd decimal: 10.909 → 10.91

That is 2 decimal places

(if your teacher doesn't want it rounded then just 10.90%)

Answer:

10.91%

Step-by-step explanation:

Answer:

Division

Step-by-step explanation:

3x = 3 times x so, you must do the opposite of multiplication to get rid of the 3, which is division.

The solution of the equation with a single variable  3x = 15 will be 5.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The equation is given below.

3x = 15

Divide the equation by 3 into both sides, then we have

3x / 3 = 15 / 3

x = 5

The solution of the equation with a single variable  3x = 15 will be 5.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

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Answer:

D, A,B I think that’s it

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given the ratio of sugar and flour by weight expressed by the ratio 3:2

Total ratio = 3+2 = 5

Ratio of sugar = 3

If we are to make 10pounds cake, the amount of sugar needed will be expressed as;

Amount of sugar = Ratio of sugar/Total sugar *weight of cake

Amount of sugar  = 3/5 * 10

Amount of sugar  = 3 * 2

Amount of sugar  = 6pounds

Hence 6pounds of sugar is needed to make the cake

Answer:

Add both of the function together.

Step-by-step explanation:

s(x) + a(x) = 450 + 6(x - 2)

Answer:

1) The function that represents how the money in her suit case is s(x) = 450

The function that represents the amount she is able to make from baby sitting is a(x) = 6(x - 2)

Given that the values of the two function are the same units, dollars, and the amount are to be put to the same use for spending money for her first year of college, the combination of the two functions is the sum of their values given as follows;

f(x) = s(x) + a(x) = 450 + 6(x - 2)

2) For simplification, we expand the second term and add the constant terms as follows;

f(x) = 450 + 6·x - 12

f(x) = 450 + 6·x - 12

f(x) = 438 + 6·x

The sum of the two terms becomes, f(x) = 438 + 6·x

Answer:

Two answers are possible

Step-by-step explanation:

Both are listed below

Answer:

$5,158.14

Step-by-step explanation:

$81,223 - $13,725.35 - $5,600 = $61 897.65

$61 897.65 ÷ 12 = $5158.1375 ⇒ $5158.14

Answer:

10.7%

Step-by-step explanation:

Hope this helps :)

Answer:

Cost of turkey sandwich is $4.50 and cost of salad is $3.50

Step-by-step explanation:

Let cost of 1 turkey sandwich be $t and cost of 1 salad be $s.

2t + 4s = 23 --(1)

s + 1 = t

s = t - 1 --(2)

Sub (2) into (1):

2t + 4(t - 1) = 23

6t - 4 = 23

6t = 27

t = 4.5

sub t = 4.5 into (2):

s = 4.5 - 1

s = 3.5

therefore, cost of turkey sandwich is $4.50 and cost of salad is $3.50

Answer

2/5

Step-by-step explanation:

if you multiply each fractions numerator and denominator so that they can be in the same group you will get

2/5=8/20

1/4=5/20

therefore 2/5 is bigger.

^^ i hope that made sense :)

The solution is: 2/5 is the fraction which fraction is larger than 1/4.

Here, we have,

given that, the fractions are, 2/5 & 1/4 ,

if we multiply each fractions numerator and denominator so that they can be in the same group.

here, we have to multiply 1st fraction by 4 both and 2nd fraction by 5 both.

we will get:

2/5=8/20

1/4=5/20

now, we know that,

8 > 5

=> 8/20 > 5/20

=> 2/5 > 1/4

therefore 2/5 is bigger.

Hence, The solution is: 2/5 is the fraction which fraction is larger than 1/4.

To learn more on fraction click:

brainly.com/question/10354322

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