3 years ago

Question 6 Look at image, what is the value of x?

Mathematics

1 answer:

spayn [35]3 years ago

8 0

Answer:

x=5

Step-by-step explanation:

16x+5=85

16x=80

x=5

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What is the distance between these points C(-4,1) and D(1,1)

Maslowich

Answer:

Step-by-step explanation:

Use the distance formula

d= $\sqrt{(1+4)^{2}+(1-1)^{2} }$

$d=\sqrt{5^{2}+0^{2} }$

$d=\sqrt{25+0} \\d=\sqrt{25} \\d=5$

Hope this helps!

8 0

4 years ago

Solve each system of linear equations albebraically

ANEK [815]

Step-by-step explanation:

$1.\\\left\{\begin{array}{ccc}y=3x&(1)\\2y=6x&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\2(3x)=6x\\6x=6x\qquad\text{subtract}\ 6x\ \text{from both sides}\\6x-6x=6x-6x\\0=0\qquad\text{TRUE}\\\\Answer:\ \text{Infinitely many solutions}\\\\\left\{\begin{array}{ccc}y=3x\\x\in\mathbb{R}\end{array}\right$

$2.\\\left\{\begin{array}{ccc}y=2x+5&(1)\\y-2x=1&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\(2x+5)-2x=1\\2x+5-2x=1\qquad\text{combine like terms}\\(2x-2x)+5=1\\5=-1\qquad\text{FALSE}\\\\Answer:\ \text{No solution.}$

$3.\\\left\{\begin{array}{ccc}3x-2y=9\\-6x+4y=1&\text{divide both sides by 2}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x-2y=9\\-3x+2y=0.5\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad0=9.5\qquad\text{FALSE}\\\\Answer:\ \text{No solution.}$

5 0

3 years ago

I don't know how to do this!!

saw5 [17]

3x-1=77 (due to exterior alternate angle)
Or, 3x=77-1
or, 3x=76
or, x=76/3
or, x=25.3

6 0

3 years ago

⎪6 − 4⎪ − ⎪3 − 8⎪ = ?<br> Please help!!!!

andriy [413]

Answer:

-3

Step-by-step explanation:

Numbers that come out of the absolute values are always positive.

|6 - 4| -|3 - 8| =

| 2| - | -5| =

2 - 5 =

-3

3 0

3 years ago

Q 16 Two numbers are in the ratio 3 : 17. If the first is 6, what is the other?

liberstina [14]

Answer:

D 34

Step-by-step explanation:

i hope you understand

3 0

3 years ago