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2 years ago

11

A baker uses 33 cups of flour to make each cake. If ff represents the total amount of flour, which equation models this situatio

n?

1 answer:

igor_vitrenko [27]2 years ago

7 0

We need to see your selection to chose from but <em>it would look something like the following

x = number of cakes

ff = 33x</em>

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helen didvided her colored pencils evenly among herself and three freinds. write an expression to represent the number of pencil

svetoff [14.1K]

So, As Helen divides these pencils, she will divided among, herself, and also her other friends.

This would then signify that the expression would look like the following:

$\boxed{p\div(4)}$

We really do not know how many pencils Helen had, so this is why <em>p </em>is in the equation.

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2 years ago

The midpoint of \overline{\text{AB}}

Schach [20]

Answer:

<em>The coordinates of b are: B=(-7,-8)</em>

Step-by-step explanation:

We are given the coordinates of the midpoint of $\overline{\text{AB}}$ as M=(-5,-2).

We are also given the coordinates of A=(-3,4). The question requires us to calculate the coordinates of the other endpoint B.

Let (xb,yb) the coordinates of B. The coordinates of the midpoint can be calculated as follows:

$\displaystyle x_m=\frac{x_a+x_b}{2}$

$\displaystyle y_m=\frac{y_a+y_b}{2}$

We know xa=-3 and xm=-5. Solve the first equation for xb:

$2x_m=x_a+x_b\Rightarrow x_b=2x_m-x_a$

Substituting:

$x_b=2\cdot (-5)-(-3)=-10+3$

$x_b=-7$

We can solve the second equation for xb and get:

$y_b=2y_m-y_a$

Since ya=4 and ym=-2, then:

$y_b=2\cdot (-2)-(4)=-4-4$

$y_b=-8$

Thus, the coordinates of b are: B=(-7,-8)

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3 years ago

In the orthonormal system (O; i⃗,j⃗) below, consider point A(3, −1), vector v⃗(2,1), and

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Answer:

Step-by-step explanation:

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2 years ago

Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals

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Answer:

(0.767,0.833)

Step-by-step explanation:

The 95% confidence interval for population proportion p can be computed as

$p-z_{\frac{\alpha }{2} } \sqrt{\frac{pq}{n} }$

The z-value associated with 95% confidence level is 1.96.

whereas p=x/n

We are given that x=440 and n=550.

p=440/550=0.8

$0.8-1.96\sqrt{\frac{0.8(0.2)}{550} }$

$0.8-1.96\sqrt{\frac{0.16}{550} }$

$0.8-1.96\sqrt{0.00029 }$

$0.8-1.96(0.01706)$

$0.8-0.03343$

$0.76657$

Thus, the required confidence interval is

0.767<P<0.833 (rounded to 3 decimal places)

Hence, we are 95% confident that our true population proportion will lie in the interval (0.767,0.833)

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2 years ago

Please answer this question correctly!! 40 points and brainliest to the correct answer!

skad [1K]

Answer:

the answer is 2.1

Step-by-step explanation:

using a calculator:

1. type in 4.2

2. multiply 4.2 by 1/2

3. the answer will then be shown as 2.1

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3 years ago