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3 years ago

9 ⅚ + 1 ¼ +____=14 i need the anwser right away

Mathematics

1 answer:

Tpy6a [65]3 years ago

3 0

Answer:

-1/12

please mark brainliest it would help me a lot ❤️

Step-by-step explanation:

9 5/6 = 9 10/12

1 1/4=1 3/12

9 10/12+1 3/12=14 1/12

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Jacob has several babysitting jobs. On one job, he earned $10 an hour plus an extra $20 since there were 3 children. On the othe

Slav-nsk [51]

Answer:

4 hours, $60

Step-by-step explanation:

Assuming "d" is equal to the dollars Jacob earned and h= hours, you start by setting the equations equal to each other, since both are equal to "d."

15h=10h+20

Subtract 10h from both sides (to combine like terms) so the equation becomes:

5h=20

Divide 5 from both sides, to isolate "d" :

h=4

The number of hours Jacob worked is 4, as the equation above shows. To find the amount of money Jacob made, substitute 4 as "h" into the two original equations:

d= 15(4) d=$60

d=10(4)+20 d=$60

Jacob earned $60 dollars in 4 hours.

7 0

3 years ago

Find the length of the third side. round to the nearest tenth if necessary. legs: 12in. and 16in

Olenka [21]

A^2 + b^2 = c^2 12^2 +16^2= c^2 C =400 so we square that and get the third side which is 20

6 0

3 years ago

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Catherine saved some money and plans to add the same amount each week to her savings account. The table represents the number of

elena55 [62]

Answer:

b y=6x+50

Step-by-step explanation:

i got it right hope this helps

8 0

3 years ago

Read 2 more answers

Geometry math question no Guessing and Please show work thank you

nasty-shy [4]

We can name an angle either by naming its vertex or by three letters , keeping the letter of vertex in between.

so here vertex is F

we can name it as ∠EFG, ∠F , ∠GFE

This strikes out the option B that is ∠G

so option B is the answer

6 0

3 years ago

According to the manufacturer of a backup UPS device, the normal output voltage is 120 volts. The sample of 40 measured voltage

anyanavicka [17]

Answer:

z = 1.83<1.96

null hypothesis is accepted

The sample is came from a population mean

Step-by-step explanation:

Step :-1

The sample of 40 measured voltage amounts from a unit have a mean of 123.59 volts and a standard deviation of 0.31 volts

given sample size n =40

mean of the sample ×⁻ = 123.59 volts

standard deviation of sample σ = 0.31 volts

Step2:-

Null hypothesis :-

the sample is from a population with a mean equal to 120 volts.

H₀ : μ =120

Alternative hypothesis:-

H₁ : μ ≠120

level of significance:- α =0.05

Step 3:-

The test statistic

$z = \frac{x_{-}-mean }{\frac{S.D}{\sqrt{n} } }$

substitute values and simplification

$z = \frac{123.59-120}{\frac{0.31}{\sqrt{40} } }$

on simplification we get the calculated value

z = 1.83

The tabulated value z =1.96 at 0.05 % level of significance

Conclusion:-

Calculated Z < The tabulated value z =1.96 at 0.05 % level of significance

so the null hypothesis is accepted

The sample is came from a population mean

4 0

3 years ago