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horsena [70]
3 years ago
7

Simplify the expression 2/5y - 4 + 7 - 9/10y

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
7 0
The simplified version is 3-y/2
Zina [86]3 years ago
6 0
3- y/2 is your correct answer
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I need to know 9 and 3/4 multiplied by 15 and 1/2
Over [174]
9 3/4 x 15 1/2
= 151 1/8
or 
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3 0
3 years ago
Read 2 more answers
-7x+4y=24, 4x-4y=0 substitution
BartSMP [9]
The first one: -7(x) + 4(y) = 24
The second one: 4(x) - 4(y) = 0

4y - 7x = 24 which is reduced to a negative
(-4y + 4x = 0 )


4(x) = 4(y)

-7(y ) + 4(y) = 24  
- 3(y) = 24

3(y) = - 24 


y-intercept: - 8 
x-intercept: -8

The X & Y intercept is: -8, -8



8 0
3 years ago
Find the length of ST In the kite.
kifflom [539]

Answer:

1.29

Step-by-step explanation:

The diagonals of a kite are perpendicular.

Angles QRT and SRT are congruent.

In right triangle STR, for angle TRS, ST is the opposite leg, and SR is the hypotenuse. The sine ratio relates the opposite leg to the hypotenuse, so we use the sine ratio to find the length of segment ST.

sin <TRS = opp/hyp

sin <TRS = ST/SR

sin 23 deg = ST/3.3

ST = 3.3 * sin 23 deg

ST = 1.29

5 0
3 years ago
In the figure below, secant PQ intersects the circle at R and secant SQ intersects the circle at point T. What is the value of z
BabaBlast [244]

Answer:

19

Step-by-step explanation:

6×(6+14) = 5×(5+z)

120 = 25 + 5z

95 = 5z

z = 19

6 0
2 years ago
A ferris wheel can accommodate 40 people in 30 minutes. How many people could ride the ferris wheel in 3 hours? What was that ra
andrew-mc [135]
240 people could ride it in 3 hours. The rate per hour is 80 people.


3 0
3 years ago
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