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3 years ago

QUICK PLEASE!!!

Mathematics

2 answers:

Delicious77 [7]3 years ago

8 0

Answer:

im just going to copy and paste the correct ones and their answers:

Problem: The sum of twice a number and −6 is 9 more than the opposite of the number. Find the number.

Equation: 2n − 6 = 9 − n

n = 5

Problem: Anna drove 450 km in 6 hours. Find her rate of travel.

Equation: 450r = 6

r = 75

Problem: Three times a number increased by 44 is the same as the opposite of the number. Find the number.

Equation: 3n + 44 = −n

n = -11

omeli [17]3 years ago

4 0

Answer:

a and c

Step-by-step explanation:

a. $2n-6=9-n$

$2n+n=9+6$

$3n=15$

$n=\frac{15}{3}=5$

b. $Rate=\frac{distance}{time}$

Distance=450 km

Time=6 hours

Rate= $\frac{450}{6}=75 Km/h$

But from given equation

$450r=6$

$r=\frac{6}{450}$

Hence, it is wrong.

c. $3n+44=-n$

$3n+n=-44$

$4n=-44$

$n=\frac{-44}{4}=-11$

d.Let number of quarter=x

Number of dimes=5 x

According to question

$x+5x=$ $5.25

But given equation

$x+10x=$ $5.25

This is wrong.

Hence, option a and c are true.

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Learning Task 1: Identify similar and dissimilar fractions. On your note- book write S if the fractions are similar and D if dis

Ronch [10]

<h2>Complete Question: </h2>

Learning Task 1: Identify similar and dissimilar fractions. On your note- book write S if the fractions are similar and D if dissimilar.

1. $\frac{2}{3} $ and $ \frac{1}{3}$

2. $\frac{3}{4} $ and $ \frac{1}4}$

3. $\frac{4}{7} $ and $ \frac{7}{8}$

4. $\frac{2}{5} $ and $ \frac{5}{11}$

5. $\frac{7}{13} $ and $ \frac{7}{9}$

<h2>The answers:</h2>

1. $\frac{2}{3} $ and $ \frac{1}{3}$ - Similar (S)

2. $\frac{3}{4} $ and $ \frac{1}4}$ - Similar (S)

3. $\frac{4}{7} $ and $ \frac{7}{8}$ - Dissimilar (D)

4. $\frac{2}{5} $ and $ \frac{5}{11}$ - Dissimilar (D)

5. $\frac{7}{13} $ and $ \frac{7}{9}$ - Dissimilar (D)

Note:

Similar fractions have the same denominator. i.e. the bottom value of both fractions are the same.
Dissimilar fractions have different value as denominator, i.e. the bottom value of both fractions are not the same.

Thus:

1. $\frac{2}{3} $ and $ \frac{1}{3}$ - They have equal denominator. Both fractions are similar (S).

2. $\frac{3}{4} $ and $ \frac{1}4}$ - They have equal denominator. Both fractions are similar (S).

3. $\frac{4}{7} $ and $ \frac{7}{8}$ - They have equal denominator. Both fractions are dissimilar (D).

4. $\frac{2}{5} $ and $ \frac{5}{11}$ - They have equal denominator. Both fractions are dissimilar (D).

5. $\frac{7}{13} $ and $ \frac{7}{9}$ - They have equal denominator. Both fractions are dissimilar (D).

Therefore, the fractions in 1 and 2 are similar (S) while those in 3, 4, and 5 are dissimilar (D).

Learn more here:

brainly.com/question/22099172

7 0

3 years ago

CAN SOMEONE PLEASE HELP ME, with the worksheet will MARK AND 5 STARS!!!

mote1985 [20]

Answer:

26 miles per houre

Step-by-step explanation:

sow you put 450 amd 3.4 so you subtract but first you gat to put on the 45.0 -3.4 and then you git youre answred

4 0

3 years ago

Read 2 more answers

Change each fraction to a decimal. If the division doesn’t end, round your answer to the nearest hundredth. a. 3⁄4 b. 7⁄16 d. 3⁄

Goshia [24]

A. 0.75
b. 0.44
d. 0.6
e. 0.18
f. 2.55

8 0

3 years ago

Is a prime number is a prime number 61 or 21

goldenfox [79]

61 is a prime number.

5 0

3 years ago

Round to the nearest tenth

yan [13]

Note: I am assuming we have to determine the value of the side 'x'.

Answer:

The value of x = 8.1 units

Step-by-step explanation:

Note: I am assuming we have to determine the value of the side 'x'.

Given

Angle Ф = 32°

To determine:

x = ?

Using the trigonometric ratio

tan Ф = opposite / adjacent

here

Ф = 32°

opposite to angle 32° = x

adjacent to angle 32° = 13

Therefore,

substituting adjacent = 13, Ф = 32°, opposite = x in the equation

tan Ф = opposite / adjacent

$\tan \left(32^{\circ \:}\right)=\frac{x}{13}$

$\:x\:=\:13\:\times tan\:32^{\circ }\:$

x = 8.1 units tan 32° = 0.62

Therefore, the value of x = 8.1 units

7 0

3 years ago