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3 years ago

1-(-4) ,, (-4) is squared outside the parentheses

Mathematics

1 answer:

Naddika [18.5K]3 years ago

5 0

1-(-4)^2
1-(-4 times -4)
1-(16)
1-16
-15

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Jennifer and Kamlee are walking to school. After 20 minutes, Jennifer has walked 4/5 miles. After 25 minutes, Kamlee has walked

Nimfa-mama [501]

Answer:

Jennifer's speed is 2.4 miles/hour

Kamlee's speed is 2 miles/hour

Step-by-step explanation:

To find their speed,

Speed can be determined from the formula below,

$Speed = \frac{Distance}{Time}$

Also, to determine the speed in miles per hour (miles/hour), we will convert the time spent by each of them to hour (NOTE: 60 minutes = 1 hour)

For Jennifer,

Distance = 4/5 miles

Time = 20 mins (Convert to hour)

∴Time = (20/60) hour = 1/3 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{4/5 miles}{1/3hour}$

$Speed = \frac{4}{5} \times \frac{3}{1}$

$Speed = \frac{12}{5}$

$Speed = 2.4 miles/hour$

Hence, Jennifer's speed is 2.4 miles/hour

For Kamlee,

Distance = 5/6 miles

Time = 25 minutes (Convert to hour)

Time = (25/60) hour = 5/12 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{5/6miles}{5/12 hour}$

$Speed = \frac{5}{6} \times \frac{12}{5}$

$Speed = 2 miles/hour$

Hence, Kamlee's speed is 2 miles/hour

4 0

3 years ago

angad was thinking of a number. angad halves the number and gets an answer of 78.5. form an equation with x from the information

8_murik_8 [283]

Answer:

157

Step-by-step explanation:

Let the number Angad was thinking be 'x'

Equation:-

1/2(x) = 78.5

x = 78.5(2)

x = 157

5 0

3 years ago

What is the 5th term of the sequence defined by f(n)=5(n-2)

irina1246 [14]

F(5)=5(5-2)=15
The answer is 15.

4 0

3 years ago

WILL GIVE BRAINLIEST<br> If ABCD ~ PQRS , find each missing value

umka2103 [35]

Answer: I think CD=23 RS=67 $\leq$ p=3

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The side lengths of a triangle are given by the expressions 5x + 3, 5x – 5, and 3x – 2. Write and simplify a linear

rewona [7]

Answer:

The perimeter is $P=13x-4$

Step-by-step explanation:

The perimeter of a triangle is the distance around its edges.

The given triangle has side lengths 5x + 3, 5x – 5, and 3x – 2.

The perimeter is : $P=(5x+3)+(5x-5)+(3x-2)$

Group similar terms to get:

$P=5x+5x+3x+3-5-2$

Combine the similar terms to get: $P=13x-4$

Hence the perimeter in terms of x is $P=13x-4$

5 0

4 years ago