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Flura [38]
3 years ago
12

Determine whether the ratios 5:7 and 10:21 are equivalent

Mathematics
1 answer:
Alina [70]3 years ago
5 0

Answer:

Step-by-step explanation:

No, thoose two ratios are not equivalent, but I can show you the ones that are  equivalent, {You can write 5/7 or 10/14 or 20/28 or 40/56. There! 3 equivalent ratios.}

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Please help me idk this
d1i1m1o1n [39]

Answer:

105

Step-by-step explanation:

500 goes into 100, 5 times

21 times 5 is 105

So 21/100 is equal to 105/500

Or you can do

500*0.21=105

4 0
3 years ago
Read 2 more answers
The radius of a large sphere is 8 times the radius of a small sphere. the surface area of the large sphere is how many times the
kondaur [170]
Large sphere's radius = R,
small sphere's radius = r, R = 8r
surface area of a sphere (SA) = 4×pi×radius^2
So what we need is the SA of the larger in terms of the smaller sphere, so if:
SA (of R) = 4×pi×R^2, then plug in "8r" for "R"...
SA = 4×pi×(8r)^2 = 4×3.14×64r^2
SA = 12.57×64r^2 = 804 r^2
Therefore the SA of the larger sphere is 804 times the SA of the smaller sphere.
I hope that makes sense!
8 0
3 years ago
Please help
DedPeter [7]

Answer:

<h2>10</h2>

Step-by-step explanation:

Given the expression \sqrt{10} * \sqrt{10}. To find the product of this two values, the following steps must be followed.

According to one of the law of indices, \sqrt{a} = a^{\frac{1}{2} }

\sqrt{10} * \sqrt{10}\\= 10^{\frac{1}{2} }* 10^{\frac{1}{2} }\\= 10^{\frac{1}{2}+\frac{1}{2}}\\ = 10^{1} \\= 10

The product is 10

3 0
3 years ago
Read 2 more answers
Prove that there exists a unique real number solution to the equation x3 + x2 − 1 = 0 between x = 2/3 and x=1
ziro4ka [17]
Replace each of the x values given to see if they give 0. 

0=(2/3)³+(2/3)²-1 
0=(8/27)+(4/9)-1 
0≠-0.259

0=(1)³+(1)²-1 
0≠1

Therefore, you can see that the solution would have to be between 2/3 and 1.

Hope I helped :) 
7 0
3 years ago
The product of a negative 11 cubed and negative 11 squared
bekas [8.4K]

Answer:

121 and 1331

Step-by-step explanation:

Because 11x11=121 and 11x11x11=1331

5 0
3 years ago
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