Ask question

Ask question

All categories

3 years ago

9

Solve: 7-5x= -5x - 6x +7

2 answers:

olga2289 [7]3 years ago

8 0

Answer:

actually it is x=0

Step-by-step explanation:

docker41 [41]3 years ago

6 0

7=-16x+7
0=-16x
0=x

7-0=0-0+7
7=7

You might be interested in

2) The population my nyc 2012 was

bulgar [2K]

$\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8\% of 8000000}}{\left( \cfrac{8}{100} \right)8000000}\implies 640000~\hfill \underset{now}{\stackrel{8000000-640000}{7360000}}$

3 0

3 years ago

Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

<u>Find the value of AC</u>

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

<u>Find the value of BC</u>

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

<u>Find the value of BD</u>

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

<u>the answer is</u>

the length of BD is 11.93 units

8 0

3 years ago

Read 2 more answers

Please help when there are two x's i get confused. answer #3 with an answer!

igomit [66]

Answer:

x = 1

Step-by-step explanation:

We know that the two angles must be equal to each other. So:

65x - 12 = 43x + 10

First add 12 to both sides:

65x - 12 + 12 = 43x + 10 + 12

65x = 43x + 22

Then subtract 43x from both sides:

65x - 43x = 43x - 43x + 22

22x = 22

x = 1

7 0

3 years ago

Pleaseeee helpppp!!!!

ANTONII [103]

Answer:

The easiest way to do this is to reflect Figure I over the Y axis. Then move it up 3 and left 2.

5 0

4 years ago

Read 2 more answers

I need help for question 17 in my big ideas math homework, it says "Use the figure to find the measures of the numbered angles."

Dafna1 [17]

Answer:

can you show a pic tell me in the comments

Step-by-step explanation:

7 0

3 years ago