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2 years ago

Please ignore my work and show step by step for number 9 please and thank you

Mathematics

1 answer:

Butoxors [25]2 years ago

5 0

$( x + 3)( x - 7) + (x + 8)(x + 3) = (x + 3)(x - 7 + x + 8) \\ = (x + 3)(2x + 1)$

(3) is the answer?

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Point C is on line segment \overline{BD} BD . Given CD=x,CD=x, BC=5x-5,BC=5x−5, and BD=2x+7,BD=2x+7, determine the numerical len

NARA [144]

Answer:

$CD = 3$

Step-by-step explanation:

Given

$CD = x$

$BC = 5x - 5$

$BD = 2x + 7$

Required

Determine CD

Since, C is a point on BD, the relationship between the given parameters is;

$BD = BC + CD$

Substitute the values of BD, BC and CD

$2x + 7 = 5x - 5 + x$

Collect Like Terms

$2x - 5x - x = -5 - 7$

$-4x = -12$

Divide both sides by -4

$\frac{-4x}{-4} = \frac{-12}{-4}$

$x = 3$

To determine the length of CD;

Substitute 3 for x in $CD = x$

Hence;

$CD = 3$

3 0

3 years ago

A satellite is composed of 30 modular units, each of which is equipped with a set of sensors, some of which have been upgraded.

Mazyrski [523]

Answer:

1/7 (option d) of the sensors on the satellite have been upgraded

Step-by-step explanation:

Each unit contains the same number of non-upgraded sensors

number of non-upgraded sensors for each module (nus)

total number of upgraded sensors on the satellite (tus)

satellite is composed of 30 modular units

total number of non-upgraded sensors on the satellite (tnus):

tnus=30*nus

total number of sensors on the satellite (ts):

ts=tnus+tus = 30*nus + tus (I)

The number of non-upgraded sensors on one unit is 1/5 the total number of upgraded sensors on the entire satellite

nus=(1/5)*tus

tus = 5 * nus (II)

Fraction of the sensors on the satellite have been upgraded (FU):

FU = tus/ts

Using I and II

FU= (5* nus)/(30*nus + tus)

FU = (5* nus)/(30*nus + 5 * nus)

FU = (5* nus)/(35*nus)

FU = 1/7

1/7 (option d) of the sensors on the satellite have been upgraded

6 0

2 years ago

Graph each function (equation) by making a table y = |2x| + 1 please help

Svetradugi [14.3K]

Answer:

the table:

x | y

-2 | 5

-1 | 3

0 | 1

1 | 3

2 | 5

for the graph: go up from the middle point, then right then up by two and repeat on the other side as well, should look something like this

<h2> ( up one, go left, up 2) ∨ (up one, go right up two)</h2>

8 0

3 years ago

What is the value of e? A 32 B 238 C 58 D 122

Romashka-Z-Leto [24]

Answer:
C
Explanation:

4 0

1 year ago

Need help as soon as possible

Lubov Fominskaja [6]

Answer:

CosC = $\frac{3}{5}$

Step-by-step explanation:

Cos C = $\frac{Adjacent}{Hypotenuse}$

Where Adjacent = 24 , Hyp = 40

Cos C = $\frac{24}{40}$

In simplest form

CosC = $\frac{3}{5}$

7 0

3 years ago