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3 years ago

Chen can ride his bike 3 miles in 15 minutes. How long will it take chen to ride 18 miles

Mathematics

1 answer:

RUDIKE [14]3 years ago

3 0

Answer:

15*6 = 90 minutes (1 hour and 30 minutes)

Step-by-step explanation:

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please help me to solve this word problems leading to quadratic equation: A girl is 6 years younger than her brother. the produc

vova2212 [387]

Answer:

Brother is 70.5 and sister is 64.5

Step-by-step explanation:

you will need to set up a simple equation and give out variables.

Girls age = 6-x

Brother's age= x

the you will take those 2 and add them and place them equal to 135:

6-x+x=135

6-2x+6=135+6

The 6 cancels out

2x=141

2x/2=141/2

x=70.5

The brother's age would be 70.5 then and the girl's would be 64.5

5 0

3 years ago

Michelle is having a poster printed from a picture that is 4 inches wide by 6 inches tall. The enlarged poster is 20 inches wide

MA_775_DIABLO [31]

Answer:

The correct answer is:

Option 2: $\frac{4}{6} = \frac{20}{30}$

Step-by-step explanation:

Given that

Width of picture = 4 inches

Length of picture = 6 inches

Now

Width of poster = 20 inches

Length of poster = 30 inches

The proportion of the picture will be:

$\frac{width}{length} = \frac{4}{6}$

Similarly the proportion of poster can be written as:

$\frac{width}{length} = \frac{20}{30}$

Both proportions when combined can be written as:

$\frac{4}{6} = \frac{20}{30}$

Hence,

The correct answer is:

Option 2: $\frac{4}{6} = \frac{20}{30}$

5 0

3 years ago

Read 2 more answers

Find the angle of elevation of a kite on a 50m<br> string flying 40m vertically above the ground.

Lera25 [3.4K]

Sin(x)=40/50
x= sin^-1(40/50)
x= 53.1301023542—>53.1 rounded to the nearest tenth
angle of elevation is 53.1

6 0

3 years ago

(X+4)(x+7) what’s the problem

lions [1.4K]

Answer:

7=7

Step-by-step explanation:

4 0

3 years ago

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Carly missed 22.5% of the questions on

MatroZZZ [7]

Answer:

40 questions

$correct \: questions = (100 - 22.5)\% \\ = 77.5\% \\ let \: total \: questions \: be \: x \\ = > 77.5\% \times x = 31 \\ \frac{77.5}{100} \times x = 31 \\ 77.5x = 3100 \\ x = 40 \\ = 40 \: questions$

7 0

3 years ago