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3 years ago

If anyone knows please tell me the answer ;(

Mathematics

2 answers:

just olya [345]3 years ago

6 0

Answer:

f+g = 9,4

2f-g = 3,-1

Step-by-step explanation:

f+g ,just add the corrsponding elements

2f - g =first double each element of f and then subtract corresponding elements of g from 2f

yuradex [85]3 years ago

5 0

Answer:

b: < 9, 7 >

c: < 3 -1 >

Step-by-step explanation:

f + g: < 4+5 1+3>

= < 9 4 >

2f - g: < 2(4)-5 2(1)-3>

= < 3 -1 >

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algol [13]

Well if she earned the same amount per hour the hours can be added. 2.25 + 3.25 = 5.5 hours. To get the rate of earning per hour you would then divide the total made by the total time worked. 42/5.5 = $7.64 approximately.

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3 years ago

will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!! will give brainliest!!!!

Marrrta [24]

Answer:

849.24 cm²

Step-by-step explanation:

we know it is a cube so to find the surface area of each square you do

12x12=144 and there are 5 sides so 144x5=720

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6 0

3 years ago

Read 2 more answers

The dance committee of Pine Bluff Middle School earns \$72$72 from a bake sale and will earn \$4$4 for each ticket they sell to

jeyben [28]

Answer:

Inequality is $4t+72>400$

Solution is C: t > 82

Step-by-step explanation:

Let the number of tickets = t

It is given that the committee earns $4 per ticket. That is, they earn $4t$ dollars.

Also, the committee earns $72 from the bake sale.

So, the total income is $4t+72$ dollars.

Since, the dance will cost $400.

So, the total earning must be greater than $400.

Thus, the inequality for the situation is given by, $4t+72>400$ .

So, on solving, we have,

$4t+72>400$

i.e. $4t>328$

i.e. t > 82.

Thus, the solution of the inequality is $t> 82$

Hence, option C is correct.

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3 years ago

Read 2 more answers

Sue and Javier are working on a statistics project to estimate the proportion of students at their school who have a pet dog. Su

egoroff_w [7]

Answer:

the width of sue's interval will be narrower than javier's.

Step-by-step explanation:

in this problem, i do believe that sue's interval will be more narrow. in the formula,

p-hat ± $\sqrt{phat(1-phat)/ n$ ,

a larger "n" value will lead to a smaller standard error. given that the population proportion is the same for both, and the sample size is the only difference, the standard error of sue's interval will be smaller than javier's, therefore making her whole confidence interval smaller.

again, i do believe this is correct, this is what i have in my AP stat notes. hope this helps!

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3 years ago

1. Use the formula d=rt. FInd the rate when d=13 mi and t=3 h.

lakkis [162]

1.
d = rt
13 = r*3
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2.
v = r + at
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3 years ago