All categories

3 years ago

-4x+7=11 I need some to explain

Mathematics

2 answers:

oee [108]3 years ago

5 0

$-4x+7=11\\
-4x=4\\
x=-1$

Sonbull [250]3 years ago

4 0

$-4x+7=11\ \ \ \ \ \ \ \ \ \ |x's\ on\ the\ left\ free\ numbers\ on\ the\ right\\-4x=11-7\\-4x=4\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |:(-4)\ both\ sides\\x=-1$

You might be interested in

A phere has a diameter of 12 ft. What is the volume if the sphere? Give the exact value in terms of pi

Gekata [30.6K]

if the diameter of it is 12, its radius is half that or 6.

$\bf \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3} \begin{cases} r=radius\\ \cline{1-1} r=6 \end{cases}\implies V=\cfrac{4\pi (6)^3}{3}\implies V=288\pi$

3 0

3 years ago

Read 2 more answers

Simplify the expressions below. Write the final product in standard form and show your work to receive full credit.

frozen [14]

1.
1.2 x^4 ( 4 x² + 3 x + 1 ) = 4.8 x^6 + 3.6 x^5 + 1.2 x^4
2.
( 4 x - 3 ) ( 2 x² - 7 x + 1 ) = 8 x³ - 28 x² + 4 x - 6 x² + 21 x - 3 =
= 8 x³ - 34 x² + 25 x - 3
3.
( x² + 4 x - 3 ) ( 2 x² + x + 6 ) =
= 2 x^4 + x³ + 6 x² + 8 x³ + 4 x² + 24 x - 6 x² - 3 x - 18 =
= 2 x^4 + 9 x³ + 4 x² + 21 x - 18

7 0

3 years ago

Find the area of the triangle with the following coordinates. A (-5,9) B (1,-7) C (8,4)

Virty [35]

QUESTION : > FIND THE ARE OF THE TRIANGLE WITH THE FOLLOWING COORDINATES.

A. (-5,9)

B . (1,-7)

C . (8,4)

ANSWER :> A.

 (-5,9). 

HOPE IT HELPS

 THANK ME LATER. 

<h2>#CARY ON LEARNING </h2>

4 0

2 years ago

How would 125% be expressed as a decimal. You also need to explain what is the rule in changing Percent to decimal . Give anothe

aliya0001 [1]

Answer:

$\frac{45}{100}\\\\ \frac{9}{10}$

$\frac{10}{100} = 10%$

Step-by-step explanation:

125 % can be expressed as decimal as

$\frac{125}{100} \\\frac{25}{20} \\\frac{5}{4}$

Rule in changing Percent to decimal

a) Divide a percent by 100

b) Remove percent sign

example

30%

= 3/10

45 %

$\frac{45}{100}\\\\ \frac{9}{10}$

$\frac{10}{100} = 10%$

8 0

3 years ago

There was a big snowstorm overnight that dumped over 12 inches of snow on Math Town. Luckily, it got a lot warmer, and 0.5 inch

PSYCHO15rus [73]

Answer:

14 hours

Step-by-step explanation:

12 inches -5=7

0.5x14=7

8 0

2 years ago