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sergejj [24]
3 years ago
14

For the given values of n and d, find integers q and r such that n = dq + r and 0 ≤ r < d. n = −67, d = 8

Mathematics
1 answer:
Firlakuza [10]3 years ago
7 0

Answer:

q = 8

r = 3

Step-by-step explanation:

Given

n = dq + r

0 \le r < d

n = 67 --- not -67

d = 8

Required

Find q and r

Substitute values for d and b

n = dq + r

67 = 8 * q + r

67 = 8q + r

Make q the subject

q = \frac{67 - r}{8}

0 \le r < d means that r is less than 8 but greater than or equal to 0

And r and q are integers.

Let r = 3

q = \frac{67 - 3}{8}

q = \frac{64}{8}

q = 8

No other true values of r and q can be gotten.

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After 2 weeks, a plant is 9 centimeters tall. After 5 weeks, it has grown to 15 centimeters. If the plant grows at constant rate
Reil [10]

Answer:

y = 2x + 5

Step-by-step explanation:

First, find the slope using rise over run, (y2 - y1) / (x2 - x1)

With this information, we can create 2 points: (2, 9) and (5, 15)

Plug in the points:

(15 - 9) / (5 - 2)

6 / 3

= 2

Plug in the slope and a point into y = mx + b, and solve for b:

y = mx + b

15 = 2(5) + b

15 = 10 + b

5 = b

Plug in the slope and b into the equation:

y = 2x + 5 is the equation of the line

8 0
2 years ago
Read 2 more answers
Work out the value of z, given that x+y=42 and x/13=y/8=z/9.
Andru [333]

Answer:

z = 18

x = 26 and y = 16

Step-by-step explanation:

Given:

x + y = 42

\dfrac{x}{13}=\dfrac{y}{8}=\dfrac{z}{9}

Rewrite  x + y = 42  to make y the subject:

\implies y=42-x

Substitute this into \dfrac{x}{13}=\dfrac{y}{8}:

\implies \dfrac{x}{13}=\dfrac{42-x}{8}

Cross multiply:

\implies 8x=13(42-x)

\implies 8x=546-13x

\implies 21x=546

\implies x=26

Substitute found value of x into x + y = 42 and solve for y:

\implies 26 + y = 42

\implies y=16

Substitute found value of y into \dfrac{y}{8}=\dfrac{z}{9} and solve for z:

\implies \dfrac{16}{8}=\dfrac{z}{9}\\\\\implies 2=\dfrac{z}{9}\\\\\implies 18=z

4 0
2 years ago
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elena55 [62]

Answer:

-5

Step-by-step explanation:

1*1=1

1-6= -5

Hope this helped!

4 0
2 years ago
Jeremy has three pencils. One pencil is 9.36 inches long. The second pencil is 6.7 inches long. The third pencil is 8.025 inches
klasskru [66]
Yes it does equal more the 2 feet
7 0
3 years ago
Read 2 more answers
Is the square root of 2 between 1.3 and 1.4? how do you know!
anastassius [24]
<span>Find the square root of 2 between 1.3 and 1.4
=> Square root of 2 is 1.4
Square root is a number that is multiplied twice like x2, y2
=> 1.4 is the square root of 2
Now, let’s check if we got the correct answer:
=> 1.4 * 1.4
=> 1.96 or rounded to 2
Notice that the square root of 2 is a decimal number, this is called  not perfect squares.
Perfect square root are those with whole numbers answers.


</span>



4 0
3 years ago
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