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3 years ago

Pls help quick number 2 and 3 pls!

Mathematics

1 answer:

madreJ [45]3 years ago

3 0

Answer:

y=c (468) =e _24 the answer

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2. Which of the expressions below is equivalent to:

jok3333 [9.3K]

Step-by-step explanation:

$4\sqrt{27} + 3\sqrt{12}$

First, let's rewrite the numbers inside the square roots as factors that include squares:

$4\sqrt{9 * 3} + 3\sqrt{4 * 3}$

Now, we can take the square root of these squares, while keeping the remaining factor(s) inside of the square root:

$(4*3)\sqrt{3} + (3*2)\sqrt{3}$

$12\sqrt{3} + 6\sqrt{3}$

$18\sqrt{3}$

4 0

3 years ago

5. Suppose y varies directly with x, and y= 14<br> when x= 2. What is y when x = 6?

Oduvanchick [21]

Answer:

$\boxed{42}$

Step-by-step explanation:

The formula for direct variation is

y = kx

1. Calculate the value of k

y = 14 when x = 2

$\begin{array}{rcl}14& = & k \times 2\\k & = & \dfrac{14}{2}\\& = & 7\\\end{array}$

2. Value of y

k =7; x = 6

$\begin{array}{rcl}y & = & 7 \times 6\\ & = & \mathbf{42}\\\end{array}\\y = \boxed{\mathbf{42}} \text{ when x = 6}$

7 0

3 years ago

-2/5 × -3/7-1/14-3/7× 3/5 step by

Sonja [21]

Answer:

-11/70

Step-by-step explanation:

Rearrange it first, we got:

-2/5 x -3/7 -3/5 x 3/7 -1/14

Then:

=2/5 x3/7 -3/5x3/7 -1/14

(2/5-3/5) x3/7 -1/14

=(-1/5)x3/7 -1/14

=(-3/35)- 1/14

=(-6/70)-5/70

=-11/70

3 0

3 years ago

A farmer outside of Clinton NC plants 20 plots of a new type of corn. The average yield for these plots is ī= 150 bushels per ac

bogdanovich [222]

Answer:

The 95% confidence interval is $(150\pm 8.8)$ .

Step-by-step explanation:

The information provided is:

$\bar x=150\\\sigma = 20\\n=20$

The critical value for 95% confidence level is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

Compute the margin of error as follows:

$MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}$

$=1.96\times\frac{20}{\sqrt{20}}\\\\=1.96\times 4.47214\\\\=8.7653944\\\\\approx 8.8$

Then the 95% confidence interval is:

$CI=\bar x\pm MOE$

$=150\pm 8.8$

Thus, the 95% confidence interval is $(150\pm 8.8)$ .

5 0

3 years ago

The graph below represents the path of a grasshopper as it jumps which type of function models the data on the graph

Rom4ik [11]

Answer:

4. quadratic

Step-by-step explanation:

8 0

3 years ago