Four more than a number is negative twenty..

$200/5 lamps= $40 per lamp

Final answer: $40

Using the elimination principle, the cost of one lamp is $16

Let :

3a + 5b = 176 - - - - (1)

5a + 3b = 208 - - - (2)

Multiply (1) by 5 and (2) by 3

15a + 25b = 880 - - - - (3)

15a + 9b = 624 - - - - - (4)

Subtract (3) and (4)

16b = 256

b = (256 ÷ 16)

b = $16

Therefore, the cost of one lamp is $16

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Answer:

B is the correct answer I the math hopes this helped!

Answer:

− 4

Step-by-step explanation:

The mean of a set of numbers is the sum divided by the number of terms.

Answer:

It compares two numbers that can represent many of things. For example, people, food & items.

Step-by-step explanation:

Answer:

its b Brother

Step-by-step explanation:

Answer:

Answer:

462

Step-by-step explanation:

15 x 11 + 33 x 9 = 462

100% sure gimme brainliest please thanks

Answer:

Its 462

Step-by-step explanation:

Answer:

The 95% confidence interval for the standard deviation is (0.14, 0.54).

Step-by-step explanation:

The complete data and question is:

Sloth CW Ratios ; {1.5 , 1.09 , 0.98 , 1.42 , 1.49 , 1.25}

The 95% confidence interval for the standard deviation of this data is  < σ <   (two decimals - include the leading zero) .

Solution:

Compute the sample standard deviation as follows:

[tex]\bar x=\frac{1}{n}\sum x=\frac{1}{6}\times 7.73=1.2883\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{6-1}\times 0.2387}=0.2185[/tex]

The (1 - α)% confidence interval for the variance is:

[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]

Confidence level = 95%

⇒ α = 0.05

The degrees of freedom is,

df = n - 1 = 6 - 1 = 5

Compute the critical values of Chi-square:

[tex]\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.025,5}=12.833\\\\\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{0.975,5}=0.831[/tex]

*Use a Chi-square table.

Compute the 95% confidence interval for the variance as follows:

[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]

     [tex]=\frac{5\times (0.2185)^{2}}{12.833}<\sigma^{2}<\frac{5\times (0.2185)^{2}}{0.831}\\\\=0.0186<\sigma^{2}<0.2873\\\\=\sqrt{0.0186}<\sigma<\sqrt{0.2873}\\\\=0.1364<\sigma<0.5360\\\\\approx 0.14<\sigma<0.54[/tex]

Thus, the 95% confidence interval for the standard deviation is (0.14, 0.54).

Answer:

255 mL = .255 L

Step-by-step explanation:

820 cm = 8.2 m

Answer:

3-(-6)​ = 9

Step-by-step explanation:

3-(-6) simplifies to 3 + 6.

We would have to distribute the outside negative into the inside to get rid of the parenthesis. Then, we would add.

[tex]3-(-6)\\\\-1 * -6 = 6\\\\3-(-6)=\boxed{3+6}=9[/tex]

Hope this helps.

p = 27

r = 0

p(1+r3) = 27

27(1+0(3)) = 27

27(1+0) = 27

27(1) = 27

27 = 27

Answer:

Sponge Bob Square Pants!

Absorbent and yellow and porous is he.

Sponge Bob Square Pants!

If nautical nonsense be somethin' ya wish.

Sponge Bob Square Pants!

Then drop on the deck and flop like a fish.

Sponge Bob Square Pants!

Ready?

Sponge Bob Square Pants,

Sponge Bob Square Pants,

Sponge Bob Square Pants,

Sponge Booob Square Paaants!

Ah Ha Ha, Ha Ha Ha, Ha, hArgh wh..arire..Ha arrrigh.

Step-by-step explanation:

Answer:

omg that one is hard but it is 18j-6m

Answer:

2,3

Step-by-step explanation:

The slope of the line that passes through points (1, 1) and (7, 5) is 2/3.

Slope is a notation that shows that a surface of which one end or side is at a higher level than another surface.

The formula for slope of a line that passes through two points (x₁.y₁) and (x₂,y₂) is,

y₂ - y₁ = m(x₂ - x₁)

The given points are, (1, 1) and (7, 5).

The slope of the line is given by formula m = (y₂-y1)/(x₂-x₁)

m= (5-1)/(7-1)

m = 4/6

m = 2/3

The slope of the line that passes through points (1, 1) and (7, 5) is 2/3.

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Answer:

A

Step-by-step explanation:

Because subtraction and addition are alike just how multiplication and division are.

The inverse of f(x) is (x+6)/5, the correct option is A

Suppose that the given function is

[tex]f:X\rightarrow Y[/tex]

Then, if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is

[tex]f^{-1}: Y \rightarrow X[/tex]

such that:

[tex]\forall \: x \in X : f(x) \in Y, \exists \: y \in Y : f^{-1}(y) \in X[/tex]

It simply means, inverse of 'f' is undo operator, that takes back the effect of 'f'

Given;

f(x) = 5x - 6

f^-1 (x ) = x+6/5

Let, y = f(x) and rearrange making x the subject;

y = 5x - 6 ( add 6 to both sides )

y + 6 = 5x ( divide both sides by 5 )

x = (y+6)/5

Change y back into terms of x

x  = (x+6)/5

Therefore, the answer in inverse will be (x+6)/5

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Answer:

32

Step-by-step explanation:

We are finding X and it connects to the base and the height, so it is going upward only a bit, so you add the base to the height or 26 + 6 = 32.

Answer:

32

Step-by-step explanation:

All you need to do is add 26 + 6=32

It is linear. Not non-linear. The line goes straight, even if it has a y axis, it does not curve and the change in y is constant and same each time.

Answer:

x = 39

Step-by-step explanation:

3x - 15 + 2x + 2x + 2x +24 = 360

9x = 360 + 15 - 24

9x = 351

x = 39

Answer:

16

Step-by-step explanation:

If the ratio is 3 red marbles to 4 blue marbles we can solve this using the following:

[tex]\frac{12}{b} = \frac{3}{4}[/tex]

[tex]12 * 4 = 3b\\48 = 3b\\\frac{48}{3} = b\\b = 16[/tex]

So we have 16 blue marbles.

Based on the ratio of red to blue marbles, the number of blue marbles in the bag is 16 marbles.

The bag has red marbles to blue marbles in a ratio of 3:4.

If there are 12 red marbles, the number of blue marbles can be found by direct proportion:

3   :   4

12  :   x

Cross-multiply:

3x  = 48

x = 48/3

x = 16 blue marbles

In conclusion, there are 16 blue marbles in the bag.

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Answer:

k = 10

Step-by-step explanation:

180° - 115° = 65°

(4k + 5) + (6k + 10) + 65 = 180

4k + 5 + 6k + 10 + 65 = 180

10k + 80 = 180

10k = 100

k = 10

Answer:

solution:

Answer:

The answer is c

Step-by-step explanation:

got it right on edge

Answer:

C / 2 times 10 Superscript 16

Step-by-step explanation:

Answer:

Its not proportional and not combarable

Answer:

See below

Step-by-step explanation:

1. Reflection by a factor of (-3) and vertical shift down -12 units

2. Vertical shift up by 4 units and reflection by a factor of (-3)

The answer is A, D, and F.

We have given that the following are exterior angles.

The angle between a side of a polygon and an extended adjacent side. an angle formed by a transversal as it cuts one of two lines and is situated on the outside of the line.

Therefore, The answer is A, D, and F.

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Answer: D, F

Step-by-step explanation:

The answer is D: <2 and F: <4

Answer:

The answer is 6. Does that help?

it would be 15 in. diagonal