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stira [4]
3 years ago
12

Identify the domain please thanks

Mathematics
1 answer:
Minchanka [31]3 years ago
3 0
Idk ask your teacher about that
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Ed is 7 years older than Ted. Ed’s age is also 3/4 times Ted’s age. How old are Ed and Ted?
svetlana [45]
Let Ted be x.

Ed is 7 years older =  x  + 7

Ed = (3/4)Ted

(x + 7) = (3/4)x

x + 7 = 3x/4

x - 3x/4 = -7

x/4 = -7

x = -28,           Ted = -28 years.

(x + 7) = -28 + 7 = -21,      Ed = -21 years

Goodness. We had negative numbers for the ages, well does that make sense?  No it doesn't.

Our answer is correct. But the sense in the question is lacking. The question has been wrongly set.

<span>We might assume negative ages to mean before they came into the world, before birth! </span>
7 0
3 years ago
Can someone please help me with this
timofeeve [1]

Answer:

x= 6

Step-by-step explanation:

since both sides equal the same amount..

5x-7=3x+5

you plug it in through a calculator or work it out. if you dont know how to work it out, try the app <u>photomath</u><u>,</u><u> </u>it shows you solving steps :))

8 0
3 years ago
An investment website can tell what devices are used to access their site. The site managers wonder whether they should enhance
lbvjy [14]

Answer: a)  Unimodal and symmetric

b) 0.26

c) 0.038

Step-by-step explanation:

Given: Sample size of investors (n)= 131

True proportion of smartphone users(p)  =26%

a) Since sampling distribution for the sample proportion is approximately normal when n is larger.

Normal distribution is Unimodal and symmetric.

So correct option : Unimodal and symmetric

b)  mean of this sampling​ distribution = p = 0.26

c)  standard deviation of the sampling​distribution = \sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26\times (1-0.26)}{131}}=\sqrt{0.00146870229008}

=0.0383236518364\approx0.038

6 0
3 years ago
roy has a price chart below for various ingredients he needs to order for his pizza parlor. Pizza Ingredients Item Cost (per pou
denis23 [38]
93.75 is right answer 20 words so snddnw dwdinwd
8 0
3 years ago
Read 2 more answers
A regular pentagon has a perimeter of 5x+15 what is the length of one side
dsp73

Answer:

plz give full question

its just half

6 0
3 years ago
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