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
alekssr [168]
3 years ago
8

Find the missing coefficient (5d - 7)(5d - 6) = 25d2 + what d + 42

Mathematics
1 answer:
MrMuchimi3 years ago
8 0
The coefficient is -65.

You might be interested in
10) An object is moving at a speed of 8 miles
liq [111]

Answer:

1. 5,400 inches to miles. 5400 in 4. Copage. 12 in. 2. 16 weeks to seconds ... 9. 32 ft/sec to meters/min. 324. 2 in 12.54cm bor mm / 585,22 m/min.) 10. You find ... Directions: Use dimensional analysis to convert each rate. ... Round your answer to the nearest hundredth. 1. ... What is the cyclist's speed in feet per minute?

8 0
2 years ago
Read 2 more answers
3) Last year Kerry’s take home pay was £15 000 She spent 40% of her take home pay on rent. She used the rest of her take home pa
gregori [183]
3,000. You take 15,000 and multiply by .4 to get how much she spent on rent (6,000). They you subtract the rent money from her total pay to get her money that she spent on living expenses, clothes and entertainment in total (9,000). Since she spent her money in six parts (3+2+1), you divide 9,000 by 6 to get 1,500 to get each part. Since for entertainment she has two parts you multiply 1,500 by 2 to get 3,000.
4 0
2 years ago
Suppose that we want to test the hypothesis with a significance level (alpha) of .05 that the climate has changed since industri
saw5 [17]

Answer: we reject the initial claim

(50. 3802, 51.6198)

Step-by-step explanation:

A)

The initial statement is that the mean temperature throughout history is 50°

This is the null hypothesis and it is denoted as H'

H': u = 50.

After taking a sample of 40 years, we realized that the mean temperature is 51°.

This is the alternative hypothesis, in contradiction to the alternative.

The alternative hypothesis is denoted as H1

H1: u > 50 ( upper tailed).

Sample size (n) = 40

Sample mean (x) = 51

Population standard deviation (σ) = 2

We use a z test to get the value of the test statistics.

We are using a z test because sample size is greater than 30 ( n = 40) and population standard deviation is given.

Z score = x - u/ (σ/√n)

Z score = 51 - 50 / (2/√40)

Z score = 1 / 0.3162

Z score = 3.16

Our level of significance is 5%, and the critical value at this level of significance is 1.645.

By comparing the z score relative to the critical value, since our z score is greater than 1.645, it implies that we are in the rejection region hence we reject the initial claim.

B)

We are to construct a 95% confidence interval for population mean temperature.

For upper limit

u = x + Zα/2 ×(σ/√n)

Where Zα/2 = 1.96 which is the critical value for a two tailed test at 5% level of significance.

For upper limit, we have that

u = 51 + 1.96 × (2/√40)

u = 51 + 1.96 (0.3162)

u = 51 + 0.6198

u = 51.6198.

For lower limit, we have that

u = 51 - 1.96 × (2/√40)

u = 51 - 1.96 (0.3162)

u = 51 - 0.6198

u = 50. 3802.

Hence the 95% confidence level for mean temperature is given as (50. 3802°, 51.6198°)

7 0
2 years ago
Helppppp!!!!<br> I don’t understand it
oksian1 [2.3K]
Okay so for 2x-y > 3
Subtract -2 from each side
-y>-2x+3
Divide by -1
And when you divid you gotta switch signs
So it’s y<2x-3

3x-5y less than and equal to 25
Subtract 3
-5y is less than and equal to -3x+25
Then divide by -5
Flip since we divide
Y more than and equal to 3/5x-5
We always flip signs when we divid or multiple
I hope this help
Sorry if I’m wrong
6 0
2 years ago
A TV store buys TV's for $250 each, and then increases the price by 120%. What is the sales price of a TV at this store?
faltersainse [42]

Answer:

$300

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • The temperature in Belleville was 8°C. In Wildgrove, the temperature was 39°C lower than in Belleville. What was the temperature
    10·2 answers
  • Kathleen made 29, 38, 45, 42, and 36 points on her assignments.
    11·1 answer
  • Evaluate 0.53n+5 when n=3
    9·1 answer
  • translate the sentence into an equation. four more than the quotient of a number and 2 equals 7. Use the variable W for the unkn
    11·1 answer
  • 23. Explain the Error Student A and student B were given the following graph and asked to find the value of f(x) when x= 1. Stud
    8·1 answer
  • PLZZZZZ HELPPP ME!!!!
    12·1 answer
  • What is the equation of this line?<br> o y = -1/4x<br> o y = – 4x<br> o y = 1/4x<br> O y = 4x
    12·1 answer
  • Find the square root of the following: <br>a. 1434/25<br>​
    12·2 answers
  • Please answer the question in the picture
    6·1 answer
  • Give full working and explanation
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!