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2 years ago

Help please!!! I would appreciate it!

Mathematics

2 answers:

Genrish500 [490]2 years ago

8 0

Draw a number line, or look for a number line online.

a. Count the number of units from 5 to 0. It is 5.

b. Count the number of units from -5 to 0. It is 5.

c. |5| means the absolute value of 5, and it represents the distance 5 is from 0 on the number line. The answer is 5.

d. |-5| means the absolute value of -5, and it represents the distance 5 is from 0 on the number line. The answer is 5.

sertanlavr [38]2 years ago

7 0

A.) 5 Units
B.) 5 Units
C.) 5 Units
D.) 5 Units

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4. Simplify 105 O A. 2/7 O B. / 105 O c. 42 O D. 2/3

Assoli18 [71]

Answer:

B. 105

Step-by-step explanation:

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2 years ago

Read 2 more answers

X-2(x+10)=12 , -15=5(3q-10)-5q Please Help

Rashid [163]

Answer:

-4,3.5

Step-by-step explanation:

1st one

x-2x-20 = 12

-x = 32

x=-4

2nd one

-15=15q-50 - 5q

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q = 3.5

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2 years ago

Find the value of k so that 48x-ky=11 and (k+2)x+16y=-19 are perpendicular lines.

Rufina [12.5K]

Answer: k = -1 +/- √769

Step-by-step explanation:

48x - ky = 11

-48x -48x

-ky = -48x + 11

$\frac{-ky}{-k} = \frac{-48x}{-k} + \frac{11}{-k}$

$y =\frac{48x}{k} - \frac{11}{k}$

Slope: $\frac{48}{k}$

*************************************************************************

(k + 2)x + 16y = -19

- (k + 2)x -(k + 2)x

16y = -(k + 2)x - 19

$\frac{16y}{16} = -\frac{(k + 2)x}{16} - \frac{19}{16}$

$y = -\frac{(k + 2)x}{16} - \frac{19}{16}$

Slope: $-\frac{(k + 2)}{16}$

**********************************************************************************

$\frac{48}{k}$ and $-\frac{(k + 2)}{16}$ are perpendicular so they have opposite signs and are reciprocals of each other. When multiplied by its reciprocal, their product equals -1.

$-\frac{(k + 2)}{16}$ * $\frac{k}{48}$ = -1