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3 years ago

If the spinner is spun twice, what is the probability that the numbers that are spun don't match?

Mathematics

2 answers:

WITCHER [35]3 years ago

6 0

Answer:

25%

Step-by-step explanation:

There are 4 spots and to get the same you would land on the same 1

Which would be 1/4=25%

Hope this helps!

AysviL [449]3 years ago

4 0

Answer:

25%

Step-by-step explanation:

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The ratio of the number of left handers to the number of right handers in a middle school is 6:15. If there are 120 left handers

Zinaida [17]

Answer:

300

Step-by-step explanation:

there are 9 15's in 120 which means its going by 15's 3 x 5= 15 and if it says 6 that means its timesed by 2. 15 x 2= 30 then 30 x 10= 300

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3 years ago

while swimming a 2km race, Adam changes from breaststroke to butterfly every 200m. How many times does he switch strokes during

aleksley [76]

in the first half he would have swam 1 km. there are 1000m in a km so 1000/200=5 so he swam the first 200 fly, then a 200 breast, then a 200 fly again, then another 200 breast the finish the first 1 km with a 200 fly. so we switched strokes 4 times.

PS i wouldn't recommend doing a 2 km swim fly and breast

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3 years ago

Read 2 more answers

Which fractions are greater than 1/2 Check all that apply. 1/8 10/12 15/16 3/12 13/16

marishachu [46]

Answer:

10/12

15/16

13/16

Step-by-step explanation:

each time you divide each of these they are over .5 or 50%

7 0

2 years ago

Read 2 more answers

The radius of a spherical balloon is measured as 20 inches, with a possible error of 0.03 inch. Use differentials to approximate

soldi70 [24.7K]

Answer:

a) $V = 33510.322\,in^{3}$ , b) $A_{s} = 5026.548\,in^{2}$ , c) $\% V = 0.450\,\%$ , $\%A_{s} = 0.300\,\%$ .

Step-by-step explanation:

The volume and the surface area of the sphere are, respectively:

$V = \frac{4}{3}\pi \cdot r^{3}$

$A_{s} = 4\pi \cdot r^{2}$

a) The volume of the sphere is:

$V = \frac{4}{3}\pi \cdot (20\,in)^{3}$

$V = 33510.322\,in^{3}$

b) The surface area of the sphere is:

$A_{s} = 4\pi \cdot (20\,in)^{2}$

$A_{s} = 5026.548\,in^{2}$

c) The total differentials for volume and surface area of the sphere are, respectively:

$\Delta V = 4\pi\cdot r^{2}\,\Delta r$

$\Delta V = 4\pi \cdot (20\,in)^{2}\cdot (0.03\,in)$

$\Delta V = 150.796\,in^{3}$

$\Delta A_{s} = 8\pi\cdot r \,\Delta r$

$\Delta A_{s} = 8\pi \cdot (20\,in)\cdot (0.03\,in)$

$\Delta A_{s} = 15.080\,in^{2}$

Relative errors are presented hereafter:

$\%V = \frac{\Delta V}{V}\times 100\%$

$\%V = \frac{150.796 \,in^{3}}{33510.322\,in^{3}}\times 100\,\%$

$\% V = 0.450\,\%$

$\% A_{s} = \frac{\Delta A_{s}}{A_{s}}\times 100\,\%$

$\% A_{s} = \frac{15.080\,in^{2}}{5026.548\,in^{2}}\times 100\,\%$

$\%A_{s} = 0.300\,\%$

4 0

2 years ago

David bought three candy bars for $2.45. Assuming that each candy bar is the same price, what is the unit rate for the cost of t

xxMikexx [17]

Answer:

$4.55

Please give me the brainliest!

Hope this helps!

6 0

2 years ago