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elena-14-01-66 [18.8K]

3 years ago

7

Show all ways to make 52 as tens and ones

1 answer:

melamori03 [73]3 years ago

4 0

There are a very large amount of possible solutions. A few examples.
10 + 10 + 10 + 10 + 10 + 1 + 1 = 52.
10 + 10 + 10 + 10 + (12 ones here) = 52.
10 + 10 + 10 + (22 ones here) = 52.
10 + 10 + (32 ones here) = 52
10 + (42 ones here) = 52
(52 ones here) = 52

I'm fairly sure those are all possible ways.

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If x+1/x=7,find x^2+1/x^2

trapecia [35]

Answer:

x²+1/x² = 51

Explanation:

Given x - 1/x = 7 ---(1)

We know the algebraic identity:

a²+b²-2ab = (a-b)²

Or

a²+b² = (a-b)²+2ab

Now,

x²+1/x²

= (x-1/x)²+2*x*(1/x)

= (x-1/x)²+2

:7²+2 [ from (1)] =

= 49+2

= 51

Therefore,

x²+1/x² = 51

3 0

3 years ago

Which solid has a greater volume?

Lady_Fox [76]

Answer:

C

Step-by-step explanation:

The volume of a cone is given by $V=\frac{1}{3}\pi r^2h$

The volume of a cylinder is given by $V=\pi r^2 h$

<em>Where h is the height and r is the radius</em>

The first figure is a cone with height 6 and radius 5, we can put it into the formula and find the volume:

$\frac{1}{3}\pi r^2 h\\\frac{1}{3}\pi (5)^2 (6)\\=157.08$

The second figure is a cylinder with height 50 and radius 1, we can put it into the formula and find the volume:

$\pi r^2 h\\\pi (1)^2 (50)\\=157.08$

We can see that they are equal. So answer choice C is right.

5 0

3 years ago

Please help!!! Will mark brainliest answer if correct!!!!

AlekseyPX

Answer:

x=4 and y=2

Step-by-step explanation:

Name the triangles as ABC and DEF,

Now, since both the triangles are congruent by HL rule, therefore

$3y=x+2$ (1)

and $x=y+2$ (2)

Substituting the value of $x=y+2$ in equation (1), we get

$3y=y+2+2$

$2y=4$

$y=2$

Therefore, Putting y=2 in equation (2),

$x=4$

6 0

3 years ago

8. Lilly paid $19.16 for a 1kg apple basket. This amount includes a tax of 3%. What was the cost of the apple before tax?

Maslowich

Answer:

19.75. The apples cost 19.75 before the tax.

Step-by-step explanation:

0.97(x)=19.16

19.75

7 0

3 years ago

PLEASE ANSWER ASAP!

miss Akunina [59]

Answer:

I think it is b but I could be wrong

5 0

3 years ago