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3 years ago

Writing an inequality for x that would give this rectangle a perimeter of at least 300 ft.

Mathematics

2 answers:

sdas [7]3 years ago

4 0

This is how I did it, I really hope it helped you with your homework

WINSTONCH [101]3 years ago

3 0

Answer:

142≤ x.

Step-by-step explanation:

Given : rectangle a perimeter of at least 300 ft and Length: 3ft and width formula: x+5ft.

To find : Writing an inequality for x that would give this rectangle a perimeter.

Solution : We have given length = 3 ft.

Width = x + 5 ft .

Perimeter = 300 feet .

Perimeter = 2 ( length + width ) .

Plugging the values and greater than equal to sign for at least.

300 ≤ 2( 3 + x +5).

300≤ 2( 8 +x) .

300≤ 16 + 2x

On subtracting both sides by 16.

300 -16 ≤ 2x .

284 ≤ 2x.

On dividing both sides by 2.

142≤ x.

We can say x is at least 142.

Therefore, 142≤ x.

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77julia77 [94]

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D=v.t (for the truck)

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v.t=1/2.a.t²

t=2.v/a

t=2.8.50 m/s/ 2.70 m/s²

17m/2.70=6.29

This mean that the distance is

D=v.t=8.50m/s.6.29= 53.465 m/s

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4 0

3 years ago

Halp me plz now I need to go to school Now

ANEK [815]

11.) All you've got to do is subtract thirty-eight(38) from eighty-one(81). This will result in 43.

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3 0

3 years ago

Please help me with this problem i tried

mezya [45]

Answer:

I think the answer is 1280

4 0

3 years ago

Read 2 more answers

Find x please show work if u can

MAVERICK [17]

Answer:

x is 12

Step-by-step explanation:

You can find x two different ways.

The first way is to look at the numbers on the left side. You need to find the scale factor used to get from 4 to 6.

4 x 1.5 = 6

Use this for the 8

8 x 1.5 = 12

The other way you can use is look at the number on the top triangle. You need to find the scale factor used to get from 4 to 8.

4 x 2 = 8

Use this for the 6

6 x 2 = 12

7 0

3 years ago

Ten college students were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 a

solong [7]

Answer:

The 95% confidence interval for the true slope is (0.03985, 0.14206).

Step-by-step explanation:

For the regression equation:

$\hat y=\alpha +\hat \beta x$

The (1 - α)% confidence interval for the regression coefficient or slope $(\hat \beta )$ is:

$Ci=\hat \beta \pm t_{\alpha/2, (n-2)}\times SE(\hat \beta )$

The regression equation for current GPA (Y) of students based on their GPA's when entering the program (X) is:

$\hat Y=3.584756+0.090953 X$

The summary of the regression analysis is:

Predictor Coefficient SE t-stat p-value

Constant 3.584756 0.078183 45.85075 5.66 x 10⁻¹¹

Entering GPA 0.090953 0.022162 4.103932 0.003419

The regression coefficient and standard error are:

$\hat \beta = 0.090953\\SE (\hat \beta)=0.022162$

The critical value of t for 95% confidence level and 8 degrees of freedom is:

$t_{\alpha/2, n-2}=t_{0.05/2, 10-2}=t_{0.025, 8}=2.306$

Compute the 95% confidence interval for $(\hat \beta )$ as follows:

$CI=\hat \beta \pm t_{\alpha/2, (n-2)}\times SE(\hat \beta )\\=0.090953\pm 2.306\times 0.022162\\=0.090953\pm 0.051105572\\=(0.039847428, 0.142058572)\\\approx (0.03985, 0.14206)$

Thus, the 95% confidence interval for the true slope is (0.03985, 0.14206).

6 0

3 years ago