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Alekssandra [29.7K]
3 years ago
13

What is (x - 4) + (x + 9) + ( 2x) + (3x -7) + 4​

Mathematics
2 answers:
pentagon [3]3 years ago
8 0
Answer: 5x+(2x)+2
Explanation
cricket20 [7]3 years ago
5 0

Answer:

7x+2

Step-by-step explanation:

Add x+x+2x+3x to get 7 xs or 7x. Then add -4+9-7+4 to get 2. Put 7x and 2 together to get 7x+2.

Hope it helps!

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Solve on the interval 0,2pi) 2cscx-3=-5
nydimaria [60]
We have that

<span>2cscx-3=-5---------> 2cscx=-5+3---------> cscx=-2/2---------> cscx=-1

we know that
csc x=1/sin x
then
1/sin x=-1--------------> sin x=-1
x=arcsin (-1)---------> x=-90</span>°
x=-90°---------------> 360°-90°-----------> x=270°------------> 3pi/2<span>

the answer is
x=3pi/2 radians



</span>
4 0
3 years ago
PLEASE HELP ITS MY TRIMESTER TEST MY MOM WILL KILL ME IF I FAIL! &lt;3 WILL MARK BRAINLIST!
Masteriza [31]

Answer:

area = area \: of \: two \: semi \: circles + area \: of \: rectangle \\  = 2( \frac{1}{2} \pi {r}^{2} ) + (l \times w) \\  = 2( \frac{1}{2}  \times 3.14 \times  { (\frac{18}{2}) }^{2} ) + (18 \times 4.5) \\  = 254.47 + 81 \\  = 335.5 \:  {ft}^{2}

3 0
3 years ago
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After swimming 50 feet below the surface of the water, a
marissa [1.9K]

Answer:

20, c

Step-by-step explanation:

50-30=20 Go 50 down a number line from 50, you're at 0, then go back up 30. Where are you at? 20 Hope this helps! Have a good day! :)

7 0
2 years ago
Which of the following sets of points are reflections of each other across the x-axis?
bekas [8.4K]
1. <span>A. (4, -7) → (4, 7)

2. </span><span>D. (-2, 7)

3. </span><span>B. (4, -7) → (-4, -7)

Hope this helps!</span>
3 0
3 years ago
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PLS ANSWER FAST 15POINTS ❗️❗️❗️❗️❗️❗️
o-na [289]

Answer:

300 cubic meters

Step-by-step explanation:

Volume of a Rectangular pyramid:

V = (lwh)/3

Given:

l = 10

w = 10

h = 9

Work:

V = (lwh)/3

V = (10 * 10 * 9)/3

V = 900/3

V = 300

4 0
2 years ago
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