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1 year ago

I need help asap. we need the surface of the roof including the bottom

Mathematics

2 answers:

mixas84 [53]1 year ago

5 0

Answer:

0.64m squared

Step-by-step explanation:

Surface area is the area of the sides added together

I am going to assume that the bottom is a square

0.4 multiplied by 0.6 is 0.24

0.24 halved is 0.12

0.12 multiplied by 4 is 0.48

0.4 multiplied by 0.4 is 0.16

0.48 plus 0.16 is 0.64

Anarel [89]1 year ago

3 0

Answer:

0.64 m²

Step-by-step explanation:

Total Surface Area : Area (4 triangles) + Area (square)

4 x 1/2 x 0.4 x 0.6 + (0.4)²
2 x 0.24 + 0.16
0.48 + 0.16
0.64 m²

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Find the inverse of the function: f(x) = 3x + 6

natta225 [31]

Answer:

x = -2

Step-by-step explanation:

Pull out like factors :

-3x - 6 = -3 • (x + 2)

Solve : -3 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solve : x+2 = 0

Subtract 2 from both sides of the equation :

x = -2

4 0

3 years ago

Alice’s backyard is a rectangular piece of property that is twice as long as it is wide. The total area of her yard is 1,000 m2.

irina [24]

The approximate width of Alice's backyard is 22.36 in.

Let l be the length of the rectangle and w be the width.
l = 2w
A = 1000 m2 = l*w
1000 m2 = 2w *w
500 m2 = w^2
√500 m2 = √w^2
w = 22.360679775 in or 22.36 in

Thank you for posting your question. I hope you found what you were after. Please feel free to ask me more.

8 0

3 years ago

Read 2 more answers

A bag of apples cost to that $2.88 what is the cost of one apple

Airida [17]

Answer:

Step-by-step explanation:

how many apples are in the bag?

4 0

2 years ago

Read 2 more answers

Based on a poll, 867 of 1050 randomly selected adult said that they always wear seat belts. Construct and interpret a 97% confid

Mekhanik [1.2K]

The 97% confidence interval for the proportion of adults is 0.801<P<0.851.

Given that 867 adults are randomly selected from 1050 who always wear seat belts.

A confidence interval refers to the probability that a population parameter will fall between a set of values for a certain proportion of times.

Let's assume n=1050 and x=867

Find the sample proportion by dividing the given proportion with sample size as,

$\begin{aligned}\hat{p}&=\frac{x}{n}\\\hat{p}&=\frac{867}{1050}\\ \hat{p}&=0.826 \end$

Find the α by subtracting the given confidence interval that is 97% from 1 as

α=1-(97÷100)

α=1-0.97

α=0.03

To find the critical value that is $Z_{\frac{\alpha}{2}}$ by dividing alpha with 2,

$\begin{aligned}Z_{\frac{\alpha}{2}}&=Z_{\frac{0.03}{2}}\\ Z_{\frac{\alpha}{2}}&=Z_{0.015}\end$

From this table which is shown in the figure it says that the critical value is

$Z_{crit}=\pm 2.17$

Use this formula to find the confidence interval $P=\hat{p}\pm Z_{Crit}\times \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

Substitute the values in the formula,

$\begin{aligned}P&=0.826\pm 2.17\times \sqrt{\frac{0.826(1-0.826)}{1050}}\\ P&=0.826\pm 2.17\times \sqrt{\frac{0.826\times 0.174}{1050}}\\ P&=0.826\pm 2.17\times 0.0116995\\ P&=0.826\pm 0.025\end{aligned}$

Hence, a 97% confidence interval for the proportion of adults who always wear seat belts is 0.801<P<0.851.

Learn more about confidence interval from here brainly.com/question/13929861

#SPJ4

7 0

2 years ago

Explain why 3x2 can be said to be in both standard form and factored form.

topjm [15]

I beleve that you can't. if it was 3x2=___ then you could have put

standered form

3x2=____

factored form

____=3x2

7 0

2 years ago