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
oksano4ka [1.4K]
3 years ago
9

Factor x2 – 6x – 7.

Mathematics
1 answer:
SpyIntel [72]3 years ago
5 0
You can make an cb chart. so to equal -6 you need the numbers -7, 1. so now the equation is ( x - 7 )( x + 1 ). if you want to solve it set it equal to 0 and solve. 
You might be interested in
21 and 22 are complementary angles. The measure of Z1 is 45 The measure of Z2 is 3x°. Find the value of x. The figure is not dra
Alex

9514 1404 393

Answer:

  x = 15

Step-by-step explanation:

<u>Given</u>:

  ∠1 + ∠2 = 90°

  ∠1 = 45°

  ∠2 = 3x°

<u>Find</u>:

  x

<u>Solution</u>:

  Using the given values in the given equation, we have ...

  45° +3x° = 90°

  15 + x = 30 . . . . . . divide by 3°

  x = 15 . . . . . . . . . . . subtract 15

6 0
2 years ago
I NEED HELP
denpristay [2]
2 times a number minus 9 is less than or equal to 21. and in inequality form that’s: 2x - 9 >_ 21 and u make a number line and a closed circle on 15 and an arrow going right. i hope i understood your question right
7 0
3 years ago
Read 2 more answers
You know that there is a strong correlation between the consumption of ice cream and body weight. The Pearson's r = 0.78. You al
Naddika [18.5K]

Answer:

y = 7.8x + 26

Step-by-step explanation:

Given the following :

Pearson's r = 0.78

Average consumption of ice cream = 5 grams per week (m) with Standard deviation (sd) = 1.5 grams

Average weight = 65 kg with standard deviation of 15kg

Formular for the regression line :

General regression formula :

y = mx + c

y = predicted variable ; m = slope or gradient ; x = predictor variable ; c = intercept

Gradient (m) = change in y / change in x

m = (sd y / sd x) * r

m = (sd weight / sd ice cream) × r

m = (15 / 1.5) × r

m = 10 × 0.78 = 7.8

Intercept:

mean of weight(y) - [Slope×mean of icecream(x)]

65 - [7.8 × 5]

65 - 39 = 26

Hence,

y = 7.8x + 26

5 0
3 years ago
I need help please with this question
uranmaximum [27]

Answer:

around like 33.50$

Step-by-step explanation:

All you have to do is take the number of hours times the amount of money per hour ( so like the equation would look like y=5x) and since the 45 minutes isn't a full hour it shouldn't matter. Just in case though we'll consider the 45 minutes and make it a .7 and multiply that by 5 as well and we get 3.5. Now we just take 5*6+3.5 and bang.

8 0
3 years ago
How does multiplying a vector by a scalar value of -pi change the vector?
Dmitriy789 [7]
I believe the answer to your question is A
6 0
3 years ago
Other questions:
  • Ms. Carr's Class Is Selling Magazines To Raise Money For A Field Trip. The Students In The Class Device They Wanted To Make 5.50
    10·2 answers
  • An account earned interest of 5% per year. The beginning balance was $250. The equation t=log1.05E250 represents the situation,
    15·1 answer
  • Which of the following values has 3 significant figures?
    8·2 answers
  • HELP ME ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.
    10·1 answer
  • How many solutions do the following equations have?
    7·1 answer
  • Write the sum, and then write an equivalent expression by collecting like terms and removing parentheses whenever possible.
    11·1 answer
  • Seclate all the numbers that are solutions to the inequalitt w&gt;1.
    8·2 answers
  • Select the correct answer. 7 2 2 4 Which of the following inequalities is graphed on the coordinate plane? O A y &gt; 2r + 2 B.
    5·1 answer
  • The states C and D spend a total of ​$56.6 million for tourism. The state C spends ​$2.6 million more than the state D. Find the
    12·1 answer
  • Find m∠U.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!