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True [87]
2 years ago
13

(5+6)-+(-5-6)+-(5--6)

Mathematics
2 answers:
cupoosta [38]2 years ago
8 0

Answer:

11

Step-by-step explanation:

5+6=11

-5-6=  -11

5--6=11

11+11=22

22-11=11

answer=11

stellarik [79]2 years ago
7 0

Answer:

(5 + 6) + (5 - 6) + (5 - 6) \\ 11 + ( - 1) + ( - 1) \\ 11 - 1 - 1 \\ 10 - 1 \\ 9

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Sports American football fields measure 100 yards long between the end zones, and are 53 1_3yards wide. Is the length of the dia
Ann [662]

Answer:

113 \frac{1}{3} Yards

Step-by-step explanation:

solving using  Pythagorean Theorem

a^2+b^2=c^2

100^2+53.33^2 = c^2

10,000+2844.0889=c^2

12844.1=c^2 square root

= 113 \frac{1}{3}

Base on the explanation above we can tell that the length of the diagonal across this field is less than 120 yards.

8 0
2 years ago
A survey of 100 similar-sized hospitals revealed a mean daily census in the pediatrics service of 27 with a standard deviation o
Vinil7 [7]

Answer:

We conclude that the mean is greater than 25.  

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 25

Sample mean, \bar{x} = 27

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 6.5

First, we design the null and the alternate hypothesis

H_{0}: \mu = 25\\H_A: \mu> 25

We use One-tailed(right) z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{27 - 25}{\frac{6.5}{\sqrt{100}} } = 3.07

Now, z_{critical} \text{ at 0.05 level of significance } = 1.645

Since,  

z_{stat} > z_{critical}

We reject the null hypothesis and accept the alternate hypothesis.

Thus,  the mean is greater than 25.

3 0
3 years ago
10% of what number is 300?
sergij07 [2.7K]

10% of what number is 300?

This means that the number is greater than 300 and in fact 10 times greater. You can create and equation. Let x be the number.

0.1x=300

x=3000

answer:3000

8 0
3 years ago
Each student ticket for an art museum costs $12.50. the total cost for student tickets, t, varies directly as the number of tick
Troyanec [42]

An equation that models the proportional relationship between t and s.

t = 12.5s

<h3>What is proportional relationship?</h3>

Relationships between two variables where their ratios are equal are known as proportional relationships. The fact that one variable is always a constant value multiplied by the other in a proportionate connection is another way to conceive of them. This parameter is referred to as the "constant of proportionality."

<h3>According to the given information :</h3>

1) Ticket for an art museum costs $12.50

2) In other words, the price will increase by $12.50 for each ticket purchased (or tickets).

In other words, the total expense is always 12.5 times the quantity of tickets sold.

3) This indicates that we can create this ---> t = 12.5s.

An equation that models the proportional relationship between t and s.

t = 12.5s

To know more about proportional relationship visit:

brainly.com/question/12022244

#SPJ4

6 0
2 years ago
A circle has a radius of 3 cm. What is its:<br> a. Diameter? <br> b. Area? <br> c. Circumference?
larisa86 [58]

Answer:

Its B

Step-by-step explanation:

7 0
3 years ago
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