What is a expression that contains at least one variable

Mathematics

2 answers:

Vikki [24]3 years ago

7 0

a expression that contains at least one variable is called Algebraic Expression

NeX [460]3 years ago

3 0

4x (-2s+4x^2)
is an multiplication expression

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A farmer builds a fence to enclose a rectangular pasture.He uses 155 feet of fence. Find the total area of the pasture if it is

ICE Princess25 [194]

The area for the perimeter of a rectangle is:
P = 2l + 2w
In this problem, we are given that P = 155 and l = 45.5. To solve for area, we must find w. To do this, plug in the given info and isolate the w like so:
$155=2(45.5)+2w \\ 155=91+2w \\ (155)-91=(91+2w)-91 \\ 64=2w \\ \frac{64}{2} = \frac{2w}{2} \\ w=32$
Now we know w = 32. Knowing all the necessary info, we can use the area formula, A=lw, to solve for A.
$A=(45.5)(35) \\ A=1,456$

The area is 1,456 sq ft.

Hope this helps!

5 0

4 years ago

What is the value of u? 6.4u−5.1u=−3.25 Enter your answer in the box. u=

Ymorist [56]

6.4u-5.1u=-3.25 subtract

1.3u=-3.25 divide

u= -2.5

8 0

3 years ago

Read 2 more answers

Can someone help me in this algebra questions please

alexgriva [62]

For question 7 the answer is x=0.5

8 0

3 years ago

Please show your work. Find XY

Sidana [21]

XY = 17.

Because YW is a perpendicular bisector, we can say that TW and WZ are both equal to 3. It tells us that XZ is 12, so that means that XW must be 12+3 which equals 15.

It also tells us that YW is 8. So we can use the Pythagorean Theorem to find the hypotenuse of Triangle XWY. Thus, $15^{2} + 8^{2} = XY^{2}$

To solve this equation, square and add both of the terms on the right like this:
$289 = XY^{2}$

And then take the square root of both sides. Your final answer should be:
XY = 17.

3 0

4 years ago

Does y = 3/4 x + 6 and y = -3/4 x + 5 have one solution

Mumz [18]

Answer:

yes

Step-by-step explanation:

Given the 2 equations

y = $\frac{3}{4}$ x + 6 → (1)