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raketka [301]
3 years ago
7

What value of a makes the solution to the equation 5x-10=3x+a equal to 12

Mathematics
1 answer:
Illusion [34]3 years ago
6 0

Answer:

a=-1.2

Step-by-step explanation:

5x-10=3x+a=12

let's first find x:

5x-10=12

add 10 to both sides:

5x=22

divide both sides by 5:

x=4.4

now that we know what x is, we can plug it back into the equation to find a:

3*4.4+a=12

first, simplify both sides:

13.2+a=12

then, subtract 13.2 from both sides:

and our answer is: a=-1.2

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Which list orders –3, 2, 5, –1 from least to greatest?
Allushta [10]

Answer:

so all the - 3's, all the -1's then all the 2's 3's then the 5's fro the greatets

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
From a point on a cliff 75 feet above water level, an observer can see a shipThe angle of depression to the ship is d^ How far i
Alexandra [31]

Answer:

52feet

Step-by-step explanation:

The set up will be a right angle

Let the angle of depression be 30°

The height above the sea level will be the opposite

The distance of the ship from the base is x (adjacent)

Using TOA

Tan theta = opposite/adjacent

Tan 30 = 30/x

x = 30/tan 30

x = 30/0.5774

x = 51.96

x ≈ 52 feet to the nearest foot

8 0
2 years ago
The gas tank is 20% full. At $3.00 per gallon of gas, find the cost to fill the tank. (1 gal = 231 in.3)
rewona [7]
The correct question in the attached figure

we know that

to fill the tank is required--------> 100%-20%--------> 80%
if 20% of the gas tank is-----------------> 288.75 gal
80% --------------------------------------> X gal
X=80*288.75/20--------> X=1155 gal

if 1 gal----------------> cost $3
 1155 gal----------> $X
X=1155*3--------> X=$3465

the answer is
the cost to fill the tank is $3465

7 0
3 years ago
Please help me asap I am in class
lions [1.4K]
2: 2/3; 3: 3/4; 4: 1/4; 5: 1/3; 6: 1/4; 7: 4/5; 8: 5/6-3/6=1/3
4 0
3 years ago
What power of 10 makes the number 3 equal 3,000
Ymorist [56]

Answer:

The third

Step-by-step explanation:

10,100,1000

1 zero

2 zeros

3 zeros

7 0
3 years ago
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