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UNO [17]
3 years ago
13

Solve for x. -3x + 4 = -8

Mathematics
2 answers:
Sav [38]3 years ago
7 0
-3x+4=-8
-3x=-8-4
-3x=-12
X=-12 divided by -3
X=4
Mars2501 [29]3 years ago
3 0
-3x+4=-8
-4 -4
-3x=-12
----- -----
-3 -3
X=4
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Which valve is closest to 85% of 25
Papessa [141]

Answer:

<h2>21</h2>

Step-by-step explanation:

The value that is closest

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85% of is 21.25 and rounding

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<em>Hope this helps! <3</em>

7 0
2 years ago
if 4 shirts and 3 ties cost 241. and 3 shirts and 4 ties cost 200. what is the cost of 1 shirt and 1 tie?​
Inessa05 [86]

Answer:

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Step-by-step explanation:

3 0
3 years ago
A farmer has 520 feet of fencing to construct a rectangular pen up against the straight side of a barn, using the barn for one s
Setler [38]

Answer:

310\text{ feet and }210\text{ feet}

Step-by-step explanation:

GIVEN: A farmer has 520 \text{ feet} of fencing to construct a rectangular pen up against the straight side of a barn, using the barn for one side of the pen. The length of the barn is 310 \text{ feet}.

TO FIND: Determine the dimensions of the rectangle of maximum area that can be enclosed under these conditions.

SOLUTION:

Let the length of rectangle be x and y

perimeter of rectangular pen =2(x+y)=520\text{ feet}

                                                x+y=260

                                               y=260-x

area of rectangular pen =\text{length}\times\text{width}

                                       =xy

putting value of y

=x(260-x)

=260x-x^2

to maximize \frac{d \text{(area)}}{dx}=0

260-2x=0

x=130\text{ feet}

y=390\text{ feet}

but the dimensions must be lesser or equal to than that of barn.

therefore maximum length rectangular pen =310\text{ feet}

                              width of rectangular pen =210\text{ feet}

Maximum area of rectangular pen =310\times210=65100\text{ feet}^2

Hence maximum area of rectangular pen is 65100\text{ feet}^2 and dimensions are 310\text{ feet and }210\text{ feet}

5 0
3 years ago
Square root of 75 rounded to the nearest hundredth
timurjin [86]
I think this is the answer ---->  8.7 (8.66 rounded)
5 0
3 years ago
Read 2 more answers
At a school event there were 96 girls .the ratio of number of girls to the number of boys was 4:5
valina [46]
144, 4:6 simplifies to 2:3, if you divide 96 by 2 you get 48, and 48 x 3 = 144
8 0
3 years ago
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