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Anit [1.1K]
3 years ago
13

What's the next step to substitution for this equation -4+y=-4

Mathematics
1 answer:
Marina86 [1]3 years ago
6 0
Subtract the y then add the 4 to the other side so y=0
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What is the area of the parallelogram shown?
o-na [289]

Step-by-step explanation:

heght x base

13 x 18

the hight can be measured by the paralel

7 0
2 years ago
Omg pls help ill give you 20 points
ElenaW [278]

Answer:

Step-by-step explanation:

Amount of water in tank 1 = amount of water in tank 2

30t +25  = -20t + 1000

Add 20t to both sides

30t + 20t + 25 = -20t + 20t + 1000

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Subtract 25 from both sides

50t + 25 - 25 = 1000 - 25

50t = 975

Divide both sides by 50

t = 975/50 = 39/2

  = 19 \frac{1}2}

t = 19 minutes 30 seconds

After 19 1/2 minutes both tanks will have 610 liters of water

5 0
2 years ago
How do you solve sin (5pi/3) without a calculator?
Savatey [412]

very simple, we use the formula sin(a+b)=sinacosb + sinbcosa and sin(20)=2sinacosa

5pi = 2pi/3+3pi/3,

First, we use sin(a+b)=sinacosb + sinbcosa

sin(5pi/3)=sin(2pi/3+3pi/3)= sin(2pi/3+pi)= sin(2pi/3)cos(pi) +sin(pi)cos(2pi/3)

but we know that sin(pi)= 0, and cos (pi) = -1, so sin(5pi/3)= - sin(2pi/3)

now, use sin(2a)=2sinacosa, sin(5pi/3)= - sin(2pi/3)= -2sin(pi/3)cos(pi/3)

sin<span>(5pi/3)=  -2sin(pi/3)cos(pi/3)</span>

<span>sin(pi/3)= 0.86, cos(pi/3)=0.5, finally we have   </span>sin<span>(5pi/3)=  -0.86 x 0.5= -0.43</span>

5 0
3 years ago
Read 2 more answers
Target is selling a particular toaster oven that costs $27 and is marked up 45% based on cost. Find the markup amount and the se
DENIUS [597]

Step-by-step explanation:

markup amount = 45% of $27

=> 45/100 * $27

=> $12.15

Now,

selling price = $27 + $12.15 => $39.15

6 0
2 years ago
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Which of the followings explains the difference between a regular subquery and a correlated subquery?
Fynjy0 [20]
Correlated means that they relate so probably this might help
5 0
4 years ago
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