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LiRa [457]
3 years ago
15

Write an equation to represent the

Mathematics
2 answers:
eimsori [14]3 years ago
8 0

Answer:

x-11=-18

x=-7

Check work:

-7 -11 = -18

When both numbers are negative, you add them.

-7 "plus" -11 equals -18.

myrzilka [38]3 years ago
6 0

<u>Answer: </u>

The equation to represent the  relationship "a number decreased by  11 is equal to -18 is  x - 11 = -18. The value of x is -7

<u>Solution: </u>

From the question:

Given:

A number decreased by 11 is equal to -18.

That would be written as:

To Find the Number:

Assume the variable be X in its place

x - 11 = -18---------- (1)

Whenever it says "decreased by" a number, you know you are subtracting that number

Therefore from equation (1)

Now, to solve x - 11 = -18  

x - 11 = -18  

x=-18 + 11

x = -7

Hence the value of x is -7  Hence the equation to represent the relationship is x - 11 = -18

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Answer:

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Step-by-step explanation:

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Assume that military aircraft use ejection seats designed for men weighing between 141.8 lb and 218 lb. If​ women's weights are
Mariulka [41]

Answer:

P(141.8

And we can find this probability with this difference and using the normal standard table:

P(-0.639

Then the answer would be approximately 55.3% of women between the specifications. And that represent more than the half of women

Step-by-step explanation:

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(173.6,49.8)  

Where \mu=173.6 and \sigma=49.8

We are interested on this probability

P(141.8

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(141.8

And we can find this probability with this difference and using the normal standard table:

P(-0.639

Then the answer would be approximately 55.3% of women between the specifications. And that represent more than the half of women

8 0
3 years ago
Can somebody plz help me with this question plz someone I swear I need help asap
boyakko [2]

[ Answer ]

\boxed{270 \ Yards^{2} }

[ Explanation ]

  • Find Area Of Rectangle That Measures 18 Feet Long And 15 Feet Wide

-----------------------------------

Area = Base · Height

Base - 15

Height - 18

  • Insert Numbers Into Equation

15 · 18

  • Solve

15 · 18 = 270

  • Answer

270 Yards^{2}

\boxed{[ \ Eclipsed \ ]}

3 0
3 years ago
An art dealer is trying to determine whether the age of a painting plays a significant role in its price at auction. She collect
klasskru [66]

Answer:

-0.20

Step-by-step explanation:

Given the data:

Age at auction (x) ____price sold (y)

391

51

32

84

47

104

88

43

470

51

Y:

76.9

95.4

86.3

49.3

80

57

47.8

80

70

86.9

General formula for a simple linear regression :

y = ab + c

Where ;

y = predicted variable ; a = slope / gradient

b = predictor / independent variable ; c = intercept

From the result obtained from the calculator :

y = -0.01246X + 74.65552

Correlation Coefficient is used to measure the strength of relationship between linear variables.

The regression Coefficient obtained is - 0.20

This shows that there is a weak negative correlation between the age at auction and the price at which painting is sold. This is because the negative sign means that value of y decreases as x increases or vice versa, however, due to a correlation vale which is closer to 0 than 1 or - 1, we can conclude that the negative relationship between the variables is weak.

5 0
3 years ago
The volume of a pyramid is 37cm3. Its base area is 6cm2. What is its height? Round your answer to the nearest tenth of a unit.
STALIN [3.7K]

Answer 3.1

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V=\frac{lwh}{3}

H=3\frac{V}{lw}

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rounded to : 3.1

(P.S. I also Used a calculator)

7 0
3 years ago
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