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Lisa [10]
3 years ago
15

Solve for x. 3(x + 2) + 4(x - 5) = 10

Mathematics
1 answer:
atroni [7]3 years ago
5 0
3 (x + 2) + 4(x - 5) = 10

Simplify.

3x + 6 + 4x - 20 = 10

Add like terms.

(3x+4x) + (6-20) = 10

Simplify.

7x - 14 = 10

Add 14 to both sides of the equation.

7x = 24

Divide both sides by 7 so that X is by itself.

x = 24/7, or 3 3/7

~Hope I helped!~
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the spinner shown below has 12 congruent sections. the spinner spun 150 times. what is a reasonable prediction for the number of
oee [108]

Answer:45

Step-by-step explanation:

There are 3 even numbers out of A total of 8 numbers.

Each spin would have a 3/8 chance of landing in an even number.

Multiply the chance of landing on even by number of spins:

120 x 3/8 = 360/8 = 45

The answer would be 45 times.

4 0
3 years ago
How do I solve this?
Ghella [55]

Answer:

The other end point is (-3,5)

Step-by-step explanation:

For two points (x_1,y_1) and (x_2,y_2)

The mid point(x,y)=((x_1+x_2)/2,(y_1+y_2)/2)

For the mid point  (x,y)=(-1,1)

and (x_1,y_1)=(1,-3)

(x_2,y_2)=?

(-1,1)=((1+x_2)/2,(-3+y_2)/2)

(1+x_2)/2=-1\\\\1+x_2=-2\\\\x_2=-2-1\\\\x_2=-3

And

(-3+y_2)/2=1\\\\-3+y_2=2\\\\y_2=2+3\\\\y_2=5\\

So, the other end point is (-3,5)

8 0
3 years ago
I don't know what the symbol means or what to do.
Irina-Kira [14]

Answer:

Step-by-step explanation:

That weird symbol means "element".  In our case, the elements of the domain (the x-values) are -15, -6, -1.  Which tells us that we are going to sub each one of the numbers into the equation and solve it for the corresponding y value.  That in turn gives us the coordinate point.  The equation is

x + y = 6

Subbing in first -15 for x:

-15 + y = 6 and

y = 6 + 15 so

y = 21 and the coordinate point is (-15, 21).

Subbing in -6 for x:

-6 + y = 6 and

y = 6 + 6 so

y = 12 and the coordinate point is (-6, 12).

Subbing in -1 for x:

-1 + y = 6 and

y = 6 + 1 so

y = 7 and the coordinate point is (-1, 7)

The second choice is the one you want.

Just remember that x is the domain and any elements in the domain go in for x.

Also remember that y is the range and any elements in the range go in for y

7 0
3 years ago
James flipped a quarter 40 times he flipped a head 18 times and a tale 22 times using his data what is the experimental probabil
natta225 [31]
The answer would be 22 out of 40
3 0
4 years ago
Oatmeal costs $1.73/lb. How much would 2.6 lb of oatmeal cost?
weeeeeb [17]
It would cost about $4.50
7 0
3 years ago
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