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3 years ago

9

Alberto has 2 cats the smaller cat weighs 10 3/4 pounds the larger cat weighs 15 1/3 pounds how much do the cats weigh altogethe

r A. 26 1/12 B. 26 11/12 C. 25 4/7 D. 25 7/12

1 answer:

ElenaW [278]3 years ago

4 0

Answer:

A. 26 1/2

Step-by-step explanation:

change denominator so they can be the same

3/4*3 = 9/12

1/3*4 = 4/12

Add the whole numbers : 10 +15=25

9/12+4/12= 13/12 so 1 1/12

26 1/12

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Rebecca has 21 math problems to solve. She has solved 2-7 of them. How many problems has she solved?

solniwko [45]

Rebecca has 21 math problems

She has solved none....
2-7=-5

You cannot solve negative five problems

Answer: 0

6 0

3 years ago

Use the three steps to solve the problem. Joe is 10 years older than James. In 8 years, twice Joe's age will equal three times J

GarryVolchara [31]

<span>x = Joe's age and </span><span>y = James's age
</span><span>Joe is 10 years older than James - equation - x = y + 10
</span><span>In 8 years twice Joe's age will equal three times James's age - equation -
2(x+8) = 3(y+8)
</span>
<span>2(x+8) = 3(y+8) </span>
<span>2(y + 10 +8) = 3(y+8) { substitute y + 10 for x </span>
<span>2(y + 18) = 3(y + 8) </span>
<span>2y + 36 = 3y + 24 </span>
<span>12 = y </span>

<span>Joe is 22 and James is 12.</span>

7 0

3 years ago

A walking path 78 mile long Colleen planted 14 bushes the same distance apart along the path how far power are the 1st 2 bushes

kaheart [24]

Answer:

The bushes will be located 6 meters apart from each other.

Step-by-step explanation:

Given that at a walking path 78 mile long Colleen planted 14 bushes the same distance apart along the path, to determine how far away are the 1st 2 bushes along the path, the following calculation must be performed:

78/13 = X

6 = X

Thus, since the first bush is at meter 0, the remaining 13 bushes will be located 6 meters apart.

5 0

3 years ago

A polling organization announces that the proportion of American voters who favor congressional term limits is 64%, with a 95% c

EastWind [94]

Answer:

Hence when C.I. is 80% then Margin of error will be 1.9591%

Step-by-step explanation:

Given:

1st Margin of error(MOE)=3%

1st C.I.=95%

2nd C.I.=80%

To Find:

MOE at 80%

Solution:

The proportion is 64 % i.e. is constant for both MOE

Proportion is given by (P),

P=x/n

Where x= favors congressional terms

n= total voters or sampled voters.

There values are same or constant.

i.e standard deviation is also constant

Now Formula for MOE is given by

$MOE=Z*[Standard devation/Sqrt(n)]$

here Z is value for confidence interval

MOE is directly proportional to the Z-value

So

$MOE=K*Z-value$ ... where k is proportionality constant.

$MOE/Z-value$ ....ratio is constant

So , for 95 % Z=1.96 and for 80% Z=1.28

$MOE(1st)/(Z-value 1st)=MOE(2nd)/(Z-value 2nd)$

$3/1.96=MOE(2nd)/1.28$

$MOE(2nd)=(3/1.96)*1.28$

$MOE(2nd)=1.5306*1.28$

$=1.9591$ %

5 0

3 years ago

What is the length of EF¯¯¯¯¯? Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth. ft

Dovator [93]

When finding the third side of a scalene triangle, use Law of Cosine with its formula

c^2 = A^2+B^2 - 2AB(cosC)

Now, you just have to input all your data in the formula,

c^2 = 6^2+11^2 - 2(6)(11)(cos40degrees)
c^2 = 36+121 - 2(6)(11)(cos40degrees)
c^2 = 36+121 - 2(6)(11)(0.77)
c^2 = 157 - 101.12
c^2 = 55.88
c = square root of 55.88
c = 7.48 ft

Length of EF is 7.48 ft

4 0

3 years ago

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