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steposvetlana [31]
2 years ago
9

1 3/4 − 4/5 = 35 twentieths − what fraction???Plss help will give brainliest :)

Mathematics
2 answers:
7nadin3 [17]2 years ago
8 0

let's firstly convert the mixed fractions to improper fractions and then to do away with the denominators, let's multiply both sides by the LCD of all denominators.

\stackrel{mixed}{1\frac{3}{4}}\implies \cfrac{1\cdot 4+3}{4}\implies \stackrel{improper}{\cfrac{7}{4}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{7}{4}-\cfrac{4}{5}=\cfrac{35}{20}-\boxed{?}\implies \stackrel{\textit{multipling both sides by }\stackrel{LCD}{20}}{20\left( \cfrac{7}{4}-\cfrac{4}{5} \right)=20\left( \cfrac{35}{20}-\boxed{?} \right)} \\\\\\ 35-16=35-20\boxed{?}\implies 19=35-20\boxed{?}\implies -16=-20\boxed{?} \\\\\\ \cfrac{-16}{-20}=\boxed{?}\implies \cfrac{4}{5}=\boxed{?}

Serhud [2]2 years ago
4 0
If 1 3/4 - 4/5 equals 19/20, and 35/20+19/20 equals 2 7/10. 2 7/10 should be the answer.
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Answer:

The two integers the square root of 62 falls between are 7, and 8.

Step-by-step explanation:

the square root of 62 is 7.874.... so the numbers that it is between are 7 and 8 because its more than 7 but less than 8

4 0
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Which of the following is a composite number?<br> OA) 23<br> OB) 11<br> OC) 25<br> OD) 19
Flauer [41]

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its 25

Step-by-step explanation:

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3 years ago
Other term to write 2x+6
eimsori [14]
You could factor it as 2(x + 3)
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2 years ago
Please helpppp....????​
-BARSIC- [3]

Answer:

x = 45

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Geometry</u>

  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u>Step 1: Set up Equation</u>

x + (x + 65) + 25 = 180

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Combine like terms:                     2x + 90 = 180
  2. Isolate <em>x</em> term:                               2x = 90
  3. Isolate <em>x</em>:                                        x = 45
8 0
3 years ago
A market research company wishes to know how many energy drinks adults drink each week. They want to construct a 80% confidence
Diano4ka-milaya [45]

Answer:

The confidence interval = (7.8 , 8.0)

Step-by-step explanation:

Confidence Interval formula =

Mean ± z × Standard deviation/√n

Mean = 7.9

Standard deviation = 0.9

n = number of samples = 164

z = z score of an 80% confidence interval = 1.282

Confidence Interval = 7.9 ± 1.282 × 0.9/√164

= 7.9 ± 0.0900966432

Confidence Interval

= 7.9 - 0.0900966432

= 7.8099033568

Approximately to 1 decimal place = 7.8

7.9 + 0.0900966432

= 7.9900966432

Approximately to 1 decimal place = 8.0

Therefore, the confidence interval = (7.8 , 8.0)

7 0
3 years ago
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