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Afina-wow [57]
3 years ago
12

Add 2 x 2 + 5 x + 6 to − 4 x 2 − x + 7

Mathematics
1 answer:
brilliants [131]3 years ago
6 0

Add 2 x 2 + 5 x + 6 to − 4 x 2 − x + 7

Add the expressions.

13

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3.64 divided by 60.5 ROUNDED plz answer!!!
olga nikolaevna [1]

Answer:

0.06

Step-by-step explanation:

5 0
3 years ago
A 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina
serious [3.7K]

Answer:

Sample size should be atleast 617

Step-by-step explanation:

given that a 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit.

i.e. margin of error <0.3

Std devition sample = 3.8

For 95% assuming sample size large we can use z critical value

Z critical = 1.96

we have

1.96 * std error 616.3634

Sample size should be atleast 617 to get an accurate margin of error 0.3

7 0
3 years ago
The ponce de leon lighthouse in St.Augustine, Florida, is the second tallest brick tower in the United States.It was built in 18
vovikov84 [41]
Using a right triangle formed by boat with base and top of lighthouse.Note: 15 minutes = 0.25 degreesLet d be distance the boat is from shore.tan(90−13.25)=d/175
d=175∗tan(76.75)=743.2
6 0
3 years ago
Read 2 more answers
A package of 4 red,white and blue hats costs $8. What is the unit rate
love history [14]

Answer:

$2/ hat

Step-by-step explanation:

Find the unit rate:

$ to hats

8 to 4

Divide by four to get the unit rate; over 1

2 to 1

So, $2 per hat

Hope this helps!

8 0
2 years ago
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A pet store sold 36 Siamese cats. If the ratio of Siamese cats to house cats sold was 4:9, what is the combined amount of cats s
Dafna11 [192]

 The combined amount of cats sold is 117.

Ratio expresses the relationship between two variables. It shows the frequency of which that one value is contained within another variable.

The ratio of  Siamese cats to house cats = 4 : 9

Number of Siamese cats = 36

Number of combined cats = c

This equation can be formed using the above information:

4/13 x c = 36

4c = 468

c = 468 / 4

c = 117

A similar question was answered here: brainly.com/question/411732

5 0
3 years ago
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