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3 years ago

Whats the answerrrrr

Mathematics

2 answers:

Brums [2.3K]3 years ago

8 0

The answer is 10 = 10 because [3+5] +2 = 10 and 3+ [5+2] = 10

Dimas [21]3 years ago

5 0

7=10 is the answer because in the (,) 5+2=3+ (7) 7. =. 10

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What value should go in the empty boxes to complete the calculation for finding the product of 0.61 × 0.45? Both numbers are the

Mekhanik [1.2K]

0.2745 I believe... because 0.61 times 0.45 gives you that answer....

6 0

2 years ago

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A piece of wire of length 7070 is cut, and the resulting two pieces are formed to make a circle and a square. Where should the

lyudmila [28]

Answer:

a.x=39.2

b.Use whole wire as a circle

Step-by-step explanation:

We are given that

Length of piece of wire=70 units

Let length of wire used to make a square =x units

Length of wire used in circle=70- x

Side of square= $\frac{perimeter\;of\;square}{4}=\frac{x}{4}$

Circumference of circle= $2\pi r$

$70-x=2\pi r$

$r=\frac{70-x}{2\pi}$

Combined area of circle and square,A= $(\frac{x}{4})^2+\pi(\frac{70-x}{2\pi})^2$

Using the formula

Area of circle= $\pi r^2$

Area of square= $(side)^2$

a. $A=\frac{x^2}{16}+\frac{4900+x^2-140x}{4\pi}$

Differentiate w.r.t x

$\frac{dA}{dx}=\frac{x}{8}+\frac{2x-140}{4\pi}$

$\frac{dA}{dx}=0$

$\frac{x}{8}+\frac{2x-140}{4\pi}=0$

$\frac{\pi x+4x-280}{4\pi}=0$

$\pi x+4x-280=0$

$x(\pi+4)=280$

$x=\frac{280}{\pi+4}$

x=39.2

Again differentiate w.r.t x

$\frac{d^2A}{dx^2}=\frac{1}{8}+\frac{1}{2\pi}$ >0

Hence, the combined area of circle and the square is minimum at x=39.2

b.When the wire is not cut and whole wire used as a circle . Then, combined area is maximum.

3 0

2 years ago

Please help me on 1 and 4

Advocard [28]

1.so what you are going to do it add up all the sides but not just in any order you are going to add up the like terms so 2/3x+1/3x+2/3x+1/3x that adds up to be 2x and the add up 10+5+10+5 which equals 30 so there you go. Your perimeter= 2x+30
2. -2/3 has a repeating decimal

5 0

3 years ago

03+4-((-2)+8)<br> what is the answer

Contact [7]

03+4-((-2)+8) = 1

Hope this helped! :)

7 0

3 years ago

Read 2 more answers

If p(x)=2x^3+cx^2+16x+84 and x+2 is a factor of p(x),find the value of c.

Nuetrik [128]

Answer:

c = -9

Step-by-step explanation:

Knowing that -2 is a root, you can do the synthetic division with an unknown value for c. Then solve for the value of c that makes the remainder be zero. See the attachment for the work.

The second attachment shows that (x+2) is a factor of the resulting cubic.

4 0

3 years ago