All categories

3 years ago

I don't understand this problem. I thought the answer was -9 but my teacher wouldn't accept it. please help.

Mathematics

1 answer:

crimeas [40]3 years ago

4 0

Answer:

Use https://www.bartleby.com/ it has helped me out a lot . Its actual tutors/teachers who answer your questions in about 30 minutes :)

Step-by-step explanation:

You might be interested in

For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of

Gala2k [10]

Answer:

G= 93 to 147

Step-by-step explanation:

From the question we are told that

Mean x = 120

Standard deviation o = 9

Percentage for men =99.75%

Generally the empirical rule 68%,95% and 99.7% of data value lay b/w 1,2,3 standard deviation of mean

Standard deviation n= 9

Mean x= 120

Generally the interval of systolic blood pressure for middle 99.7 of male G is mathematically given as

G = mean + 3 * o

G = 120 + 3 * 9

G = 93 to 147

please brainless

3 0

2 years ago

Read 2 more answers

how many pounds of candy worth $12 per pound should be mixed with candy costing $19 per pound to produce a 70 pound mixture that

sweet-ann [11.9K]

Answer:

40 pounds

Step-by-step explanation:

Given: Cost of a candy $(c_1)$ = $\$ 12$ per pound

Cost of candy $(c_2) = \$ 19\ per\ pound$

Total amount of mixture of be produced = $70\ pound$

Selling price of mixture = $\$ 15 \ per\ pound$

Let´s x be the amount of $c_1$ to be mixed in the mixture.

∴ Cost of $c_1$ in the mixture = 12x

Next, Cost of $c_2$ in the mixture = $(70 - x)\times 19$

And we know the cost of final mixture = $70 \times 15 = 1050$

Now, putting all the value in the equation

⇒ $12x + 19 \times (70 - x) = 1050$

⇒ $1330 - 7x = 1050$

⇒ $-7x = -280$

∴ $x = 40\ pound$

∴ 40 pounds of candy worth $12 per pound to be mixed in the mixture.

6 0

3 years ago

{(5,2),(-6,2),(8,4),(5,13)}

babymother [125]

Answer:

the domain is 5,-6,8,5 the range is 2,2,4,13 it is not a function

8 0

3 years ago

Find the number of multiples of 11 between 999 and 1999.

melomori [17]

I don’t know
if you u need an actual answer....but brainliest?

7 0

3 years ago

The following triangle shows the length of each side using expressions.

grigory [225]

Answer:

A). 2(2n+7)+3n

B). 2(2(8)+7)+3(8)
2(16+7)+ 24
2(23)+24
46+24
70

4 0

3 years ago