1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ber [7]
3 years ago
9

If A > B and C > D, then A + C > B + D.

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0
The answer is Always true. because A is greater than B so put it this way if A=2 and B =1 then 2>1 same goes for C>D so if A+C would have to be greater than B+D for instance 2+2>1+1 or 4>2 so
<span>If A>B and C>D, then A+C>B+D Always  true.
</span>
You might be interested in
29+10j= -11<br> Find the value for j
Nezavi [6.7K]
<span>29+10j= -11
</span><span>29+10j - 29 = -11 - 29 (subtract 29 to both sides)
10j = -40
10j/10 = -40/10 (divide both sides by 10)
j = -4


</span>
7 0
3 years ago
Read 2 more answers
Big babies: The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighe
Vedmedyk [2.9K]

Answer:

Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

P-value=P(t>2.84)=0.0024

Step-by-step explanation:

Hypothesis test on the population mean.

The claim is that the mean weight of one-year-old boys is greater than 25 pounds.

Then, the null and alternative hypothesis are:

H_0: \mu=25\\\\H_a:\mu>25

The significance level is α=0.05.

The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.

The degrees of freedom are:

df=n-1=354-1=353

The t-statistic is:

t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{25.8-25}{5.3/\sqrt{354}}=\dfrac{0.8}{0.2817}=2.84

For a right tailed test and 353 degrees of freedom, the P-value is:

P-value=P(t>2.84)=0.0024

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

There is enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

7 0
3 years ago
(6z 2 - 4z + 1)(8 - 3z).
Yakvenalex [24]
Distributive property
a(b+c)+ab+ac
a(b-c)=ab-ac

(6z^2-4z+1)(8-3z)
move for nicety
(8-3z)(6z^2-4z+1)
distribute
8(6z^2-4z+1)-3z(6z^2-4z+1)=
48z^2-32z+8-18z^3+12z^2-3z=
-18z^3+48z^2+12z^2-32z-3z+8=
-18z^3+60z-35z+8
7 0
3 years ago
Quadratics Help please?
irakobra [83]
(x-3)^2 + (x+5)^2=9^2
(x^2-6x+9) + (x^2+10x+25)=81
2x^2+4x+34=81
2x^2+4x-47=0
From here just use quadratic formula
5 0
3 years ago
Read 2 more answers
What is 0.55 as a fraction?
Softa [21]
Eleven over 20. It's eleven over 20. They said my answer needs to be more than 20 characters is why I'm continuing writing
7 0
3 years ago
Read 2 more answers
Other questions:
  • Is this in proper standard notation? 5x - 5y = 7
    11·1 answer
  • -3(×+2)=12 what is x equal to
    8·1 answer
  • The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you graph this relations
    9·2 answers
  • What is the height h of the parallelogram? Not drawn to scale
    11·2 answers
  • Solve cos^2x + 2cosx + 1 = 0 for x over the interval [0, 2pi ). Can someone please give me a step by step answer. I don't unders
    10·1 answer
  • If the height of the rectangle is 4.8cm
    11·1 answer
  • Evaluate 8a- 1+ 0.5b when a = 1/4 and b = 10
    7·2 answers
  • PLEASE HELP BRAINIEST!❤️
    6·1 answer
  • Please help me!!!!!!!!!!!!!!!!!!!!!!​
    6·1 answer
  • What's the solution to the inequality????? 20 points
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!