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topjm [15]
3 years ago
5

Which statement is not always true?

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0
Which statement is not always true?(1) The product of two irrational numbers is irrational.
(2) The product of two rational numbers is rational.
(3) The sum of two rational numbers is rational.
(4) The sum of a rational number and an irrational number is irrational.
The statement that is not always true is the <span>sum of two rational numbers is rational. The answer is number 3.</span>
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David swan, biked, and ran in the Camp Race. She biked twice as long as she ran, and swam 15 minutes more than she ran. Her tota
lidiya [134]

Answer:

She biked 40 minutes.She ran 20 minutes.She swam 35 min.

Step-by-step explanation:

since you have 95 minutes for all parts first subtracted 15 from what she swam the you have four equal parts left the time she ram then twice she ran she biked and then the she swam 15 minutes More that she ran so you dived 95-15 which is 80  80/4 is 20 so she ran 20 min so 20 x 2 is 40 for she bike 40 then 20+15 is 35 so 40+20+35=95 an hour an 35 minutes

6 0
3 years ago
D. 10 + 11k can someone plzz help meeee plzzzz
torisob [31]

Answer:

(A).  \frac{15}{2} + \frac{33}{4} <em>k</em>

Step-by-step explanation:

\frac{3}{4} × 2(2 + 4k + 3 + \frac{3}{2} k ) = \frac{3}{2} ( 5 + \frac{11}{2} k ) = \frac{15}{2} + \frac{33}{4} k

8 0
3 years ago
What is decimal of 2 2/9​
Ghella [55]

Answer:

2.22

Step-by-step explanation:

To get 2 2/9 in decimal form, we basically convert the mixed number to a fraction and then we divide the numerator of the fraction by the denominator of the fraction. Here are the detailed math steps we use to convert 2 2/9 mixed number to decimal form:

Step 1: Multiply the whole number by the denominator:

2 × 9 = 18

Step 2: Add the product you got in Step 1 to the numerator:

18 + 2 = 20

Step 3: Divide the sum from Step 2 by the denominator:

20 ÷ 9 = 2.222222

That's it! The answer to 2 2/9 in decimal form is displayed below:

2 2/9 ≈ 2.22

7 0
4 years ago
The new apartment you are about to sign a one-year lease on is $1,500 per month. The lease
slamgirl [31]

Answer:

The new apartment you are about to sign a one-year lease on is $1,500 per month. The lease

requires you to put up first month's rent and a $750 security deposit to move in. In addition,

5 0
3 years ago
A certain city's population is 120,000 and decreases 1.4% per year for 15 years.
mart [117]

Answer:

  • Decay Problem.
  • Decay rate,  r = 0.014
  • Initial Amount =120,000
  • P(t)=120000(0.986)^t
  • P(10)=104,220

Step-by-step explanation:

The exponential function for growth/decay is given as:

P(t)=P_0(1 \pm r)^t, where:\\P_0$ is the Initial Population\\r is the growth/decay rate\\t is time

In this problem:

The city's initial population is 120,000 and it decreases by 1.4% per year.

  • Since the population decreases, it is a Decay Problem.
  • Decay rate, r=1.4% =0.014
  • Initial Amount =120,000

Therefore, the function is:

P(t)=120000(1 - 0.014)^t\\P(t)=120000(0.986)^t

When t=10 years

P(10)=120000(0.986)^10\\=104219.8\\\approx 104220 $ (to the nearest whole number)

8 0
3 years ago
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