Can someone help me pls

The total amount of corn starch left is 320 grams.

He gives each student 80 grams of corn starch from a 2-kilogram bucket.

Each students collected 80 grams of corn starch.

Therefore,

1 student = 80 grams of corn starch

His class has a total of 21 students.

Therefore,

total mass of corn starch distributed = 21 × 80

total mass of corn starch distributed = 1680 grams

The corn starch from the bucket = 2 kg

1kg = 1000 g

2kg = 2000g

Hence,

The corn starch from the bucket = 2000 grams

Finally,

amount in grams of corn starch left  = 2000 - 1680

amount in grams of corn starch left  = 320 grams.

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right 2 and down 1 so its (2,-1)

Answer:

The constant is actually 40 because every minute, 40 more copies are made. The equation would be c = 40t.

Step-by-step explanation:

Answer:

-2 < x < 3

Step-by-step explanation:

-14 < 7x < 21

Divide all three sides by 7 :

[tex]-14 < 7x < 21[/tex]

[tex]\Longleftrightarrow \frac{-14}{7} < \frac{7x}{7} < \frac{21}{7}[/tex]

[tex]\Longleftrightarrow -2 < x < 3[/tex]

The solution in interval notation (-2 , 3)

Answer:

Yes

Step-by-step explanation:

The solved equation will be n<-1

-11 is less than -1 so that will be answer

Answer:

lower right

Step-by-step explanation:

The lower quartile is located at the left side of the box

The upper quartile is located at the right side of the box

The lower quartile 24 and upper quartile 42

are positioned correctly on the lower right box plot

Answer:

x = 35

Step-by-step explanation:

we know that all triangles add up to 180

you first need to make an expression in which the angles equal 180

105 + 140 + x = 180

         145 + x = 180

subtract 145 from both sides

                  x = 35

to get the slope of any straight line, we simply need two points off of it, let's use the ones in the picture below

[tex](\stackrel{x_1}{-2}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{2}-\stackrel{y1}{0}}}{\underset{run} {\underset{x_2}{2}-\underset{x_1}{(-2)}}} \implies \cfrac{2 }{2 +2}\implies {\LARGE \begin{array}{llll} \cfrac{1}{2} \end{array}}[/tex]

Answer:

15.3

Step-by-step explanation:

Answer:

1,900

Step-by-step explanation:

Answer:

9 is the answer to that question

Answer:

Step 2

Step-by-step explanation:

(100 + 3)² = 100² + 2 x 100 x 3 + 3²

This is by the law of squares
(a + b)² = a² + 2ab + b²

Answer:

102 Takis sold

Step-by-step explanation:

x = # drinks sold

y = $ Takis sold

System of Equations:

x = y - 20

3x + 2y = 370

Use substitution method to solve.

Answer:

76.5

Step-by-step explanation:

25.50 x 3 = 76.5

Answer:

$8.50

Step-by-step explanation:

put 25.50/3 and you get 8.50

Answer:

1.38888888889

Answer:

250x + 525y ≤ 7800

no, 15 refrigerators and 8 pianos will not fit on the truck

Step-by-step explanation:

we know that x is the refrigerators and each one is 250 lbs

this can be written as 250x

we know that y is the pianos and each one is 525 lbs

this can be written as 525y

we also know that "no more than" is the same that as less than equal to

so this can be written as ≤

we can also say that the refrigerators and pianos has to be ≤ 7800

so now we have: 250x + 525y ≤ 7800

plug in 15 to x and 8 to y

250(15) + 525(8) ≤ 7800

3750 + 4200 ≤ 7800

7950 ≤ 7800

this statement is not true so no, 15 refrigerators and 8 pianos will not fit on the truck

Answer:

f(x)=4x-1

substitute x=4

f(4)=4×4-1

f(4)=15

Answer:

125℅

Step-by-step explanation:

40/32 x 100℅=125℅

Answer: segment CD

Step-by-step explanation:

Answer:

Lier, if it was simple then do. Just ban me already

Step-by-step explanation:

The FitnessGram Pacer test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter Pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal *boop*.

Answer:

i think y is correct

hope this helps

Answer:

C=√4^2+100^2=100.08

Step-by-step explanation:

a(n) = a +(n-1)d

a=20

d=26-20=6

°.° a(n) = 20 +(n–1)6

a(1) = 20 +(1–1)6=20

hope this helps

Answer:

B

Step-by-step explanation:

just multiply each x input by 3 and add 9

Answer:

B

Step-by-step explanation:

If you were to graph this, the four points line up with the linear equation.

Answer:

y = -1.50x + -3

---------------------------------------------

Step 1: Calculating Slope (m).

m = y2-y1/x2-x1

m = 3-0/-4--2

m = 3/-2

m = -1.50

Now putting value of m in equation (i)

y = -1.50x + b

Step 2: Calculating Y-intercept (b).

Lets choose the first point, (-2,0) for calculating y-intercept:

y = mx + b

0 = -1.50(-2) + b

0 = 3 + b

-3 = b

b = -3

Now putting value of b in equation

y = -1.50x + -3

Answer:

74%

Step-by-step explanation:

37/50

= 74

Answer:

74%

Step-by-step explanation:

37/50 = x/100

50x=3700

x=74

This means that you are in the experiment group

It is common to choose a group of people to study the effect of certain things like the one given in this question. The selection of people is done after designing the sample size for a certain population. The design varies depending on whether the analysis is qualitative or quantitative.

The people who lie in the sample size actually contribute to the experiment are said to be part of it.

Therefore, if you are part of the study that is used to test the effectiveness of a new drug for treating the common cold. It means you are part of the experiment group.

You can learn more about the experiment groups and control groups from

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Answer:

$3

Step-by-step explanation:

The equation we can create for this respective problem is "10x = 30" where the 10 represents the dollars and the 30 represents the tickets. We can start off by dividing each side by 10 since the coefficient is accompanied by a variable, therefore, the inverse would be division. 30/10 equals 3, thus making the answer $3 per ticket.

Hope this helps!  :D

Answer:

One ticket costs 0.333...

Hope this helps

Step-by-step explanation:

10 / 30 = 0.33333...

For example,

If it was 10 tickets for 30$, one ticket would cost 3$. But it is the opposite, it's 30 tickets for 10$.

30 / 10 = 3

The duration of the sprinkler used by each families are-

Linear equations in two variables are equations with one, none, and infinitely many solutions where each of the two variables has the highest exponent order of 1.

Now, as per the given question;

Let the total time taken by Green family is 'x'.

Let the total time taken by Adams family is 'y'

The total time for which the sprinkler are used is 55 hours.

Thus, x + y = 55 (equation 1)

The water output rate for the Green family's sprinkler was 30 L per hour.

The water output rate for the Adams family's sprinkler was 20 L per hour.

The total output of the water is 1400 L.

Then,

30x + 20y = 1400 (equation 2)

Substitute the value of x from equation 1 in equation 2.

30(55 - y) + 20y = 1400

Dividing whole equation by 10.

3(55 - y) + 2y = 140

Solving the equation.

165 - 3y + 2y = 140

y = 165 - 140

y = 25 hours. (Time for which Adams family used the sprinklers)

Put value of y in equation 1 to find x.

x = 55 - y

x = 55 - 25

x = 30 hours. (Time for which Green family used the sprinklers)

Therefore, the time for which both of the families used the sprinklers is estimated.

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The complete question is-

The Green family and the Adams family each used their sprinklers last summer. The water output rate for the Green family's sprinkler was 30 L per hour. The water output rate for the Adams family's sprinkler was 20 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1400 L. How long was each sprinkler used?