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Leto [7]
2 years ago
15

Help me with this please

Mathematics
2 answers:
expeople1 [14]2 years ago
6 0

Answer:

i think 55 i'm not sure

Step-by-step explanation:

VARVARA [1.3K]2 years ago
5 0

Answer: 125

Step-by-step explanation:

You might be interested in
Solve ; 7/x-3/2x+7/6=9/x
german

Answer:

x = 3

Step-by-step explanation:

7/x - 3/(2x) + 7/6 = 9/x

x(7/x  - 3/(2x)  + 7/6) = x(9x)

x*7/x  - 3*x/(2x) + x*7/6 = x*9x

7 - 3/2 + 7x/6 = 9

7x/6 = 9 - 7 + 3/2

7x/6 = 2 + 3/2

7x/6 = 12/6 + 9/6

7x = 12+9

7x = 21

x = 21/7

x = 3

probe:

7/3 - 3/(2*3) + 7/6 = 9/3

14/6 - 3/6 + 7/6 = 3

(14 - 3 + 7) / 6 = 3

18/6 = 3

6 0
2 years ago
Write the phrase as an expression. Six more than three times a number w. An expression for this phase is..?
deff fn [24]

Answer:

6+3x=w

Step-by-step explanation:

6 *more* more always means +

and then three *times* times always means *

so it would equal 6+3x=w

6 0
3 years ago
New tablets are on sale for 40% off. They're
Morgarella [4.7K]

Answer:

$89.7

Step-by-step explanation:

First, find the 40% of 149.5, which is 59.8. Then, subtract the percentage (59.8) from 149.5 which equals 89.7.

So it is $89.7 dollars when it is 40% off.

HOPE THIS HELPS!!!!

BEST OF LUCK!!!

8 0
2 years ago
What is the sine value of 2 pi over 3? negative 1 over 2 1 over 2 negative square root 3 over 2 square root 3 over 2
MatroZZZ [7]

Answer:

\large\boxed{\sin\dfrac{2\pi}{3}=\dfrac{\sqrt3}{2}}

Step-by-step explanation:

\sin\dfrac{2\pi}{3}=\sin\bigg(\pi-\dfrac{\pi}{3}\bigg)\\\\\text{use}\ \sin(x-y)=\sin x\cos y-\sin y\cos x\\\\=\sin\pi\cos\dfrac{\pi}{3}-\sin\dfrac{\pi}{3}\cos\pi\\\\\text{use the table from the attachment}\\\\\sin\pi=0\\\\\cos\dfrac{\pi}{3}=\dfrac{1}{2}\\\\\sin\dfrac{\pi}{3}=\dfrac{\sqrt3}{2}\\\\\cod\pi=-1\\\\\text{subtitute:}\\\\=(0)\left(\dfrac{1}{2}\right)-\left(\dfrac{\sqrt3}{2}\right)(-1)=\dfrac{\sqrt3}{2}

7 0
3 years ago
A.(7,8) <br> B.(2,22)<br> C.(2,8)<br> D.(3,29)
Law Incorporation [45]
Hey there!

To use the substitution method in order to solve the system of equations,
y=7x+8
y=x+20 , first notice that both equations are set equal to the same value, y.

Knowing this, 7x+8 and x+20 both equal the same value so you would set them equal to one another:
7x+8=x+20.

This would be substitution as you are substituting one of the equations in place of y.

Now, solve for x:
7x+8=x+20
6x+8=20
6x=12
x=2

Now that you know x equals the value of 2, you can substitute the value into one of the equations to find y:
y=x+20
y=2+20
y=22

Now that you have x=2 and y=22, you can conclude that your answer would be (2,22) or choice B.

Hope this helps and have a wonderful day! :)
7 0
3 years ago
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