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
vekshin1
3 years ago
14

What is 7*7-1??????????

Mathematics
1 answer:
Margarita [4]3 years ago
8 0

Answer:

48

Step-by-step explanation:

7*7= 49-1=48

You might be interested in
Answer this easy question.
KengaRu [80]

Answer:

your camera is too close, i don't understand

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Given two dependent random samples with the following results:
Naddik [55]

Answer:

The null hypothesis will not be rejected.

Step-by-step explanation:

The hypothesis for the test is:

<em>H</em>₀: There is no difference between the two population means, i.e. <em>d</em> = 0.

<em>Hₐ</em>: There is a significant difference between the two population means, i.e. <em>d</em> ≠ 0.

Consider the Excel output attached.

The mean of the differences is, \bar d=-2.75.

The standard deviation of the differences is, S_{d}=4.268.

Compute the test statistic as follows:

t=\frac{\bar d}{S_{d}/\sqrt{n}}=\frac{-2.75}{4.268/\sqrt{8}}=-1.82

The degrees of freedom is, n - 1 = 7.

Compute the <em>p</em>-value as follows:

p-value=2\cdot P(t_{7}

The decision rule is:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

<em>p</em>-value = 0.112 > α = 0.02.

The null hypothesis will not be rejected.

4 0
3 years ago
If a polynomial function f(x) has roots 1+square root of 2 and-3, what must be a factor of f(x)?
nevsk [136]
To find the factor a a polynomial from its roots, we are going to seat each one of the roots equal tox, and then we are going to factor backwards.

We know for our problem that one of the roots of our polynomial is -3, so lets set -3 equal tox and factor backwards:
x=-3
x+3=0
(x+3) is a factor of our polynomial.

We also know that another root of our polynomial is 1+ \sqrt{2}, so lets set 1+ \sqrt{2} equal to x and factor backwards:
x=1+ \sqrt{2}
x-1= \sqrt{2}
x-1- \sqrt{2}=0
(x-(1+ \sqrt{2})=0
((x-(1+ \sqrt{2} )) is a factor of our polynomial.

We can conclude that there is no correct answer in your given choices.
8 0
3 years ago
The following are the ages (years) of 5 people in a room:
juin [17]

Answer:

10

Step-by-step explanation:

14+14+18+18+22=86

6*16=96

96-86=10

7 0
3 years ago
Read 2 more answers
What is the value of x in the equation 2(x+3) = 4(x-1)?<br> own
11111nata11111 [884]

Step-by-step explanation:

Solving

2x + 6 = 4x - 4

Bringing like terms on one side

6 + 4 = 4x - 2x

10 = 2x

10 / 2 = x

5 = x

8 0
3 years ago
Other questions:
  • Let x represent any number in the set of even integers greater than 1. Which inequality is true for all values of x?
    11·2 answers
  • When multiplying or dividing an inequality by a negative number, you must reverse (flip) the sign of the inequatlity.
    8·2 answers
  • What is the result of 96-6? Use the model to find the answer.<br> 8<br> 12<br> 16<br> 32
    5·2 answers
  • What is the function equation in function notation?
    14·1 answer
  • You and a friend each kick a soccer ball up into the air. The polynomials -16 T squared +6040+2 and -16 T squared +5060+1 repres
    5·1 answer
  • -2 1/3-(-5) =<br><br><br>What is the answer (3 1/3)<br><br>(-7 1/3 ) (2 2/3) (3 2/3)
    8·2 answers
  • What is the solution? <br> I will mark you as the brainliest abswer!
    15·2 answers
  • What is the value of 6 in 236​
    9·1 answer
  • What is the image of (-12,9) after dilation by a scale factor of 1/3
    15·1 answer
  • 14) Are these TRUE or FALSE?<br>3/1= 1/3<br>3/1 = 1<br>3/3 = 1​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!