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kakasveta [241]
3 years ago
13

Select all the expressions that are equivalent to 4(y+7) 4y+7 4y+28 3+1(y+7) 4y+4(7) 4+y+7 3(y+7)+(y+7) PLEASE GUYS I REALLY NEE

D THIS I REALLY NEED TO GET MY GRADE UP BEFORE THE SEMESTER ENDS!!!
Mathematics
1 answer:
sasho [114]3 years ago
7 0

Answer:

Step-by-step explanation:

4(y+7)=4(y)+4(7)

=4y+28

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First two are scalene last one is isosceles.
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As the weight increases, the price increases.

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BRAINLIEST AND 50 POINTS!!!!!!!!!!!!!!!!!!
alexira [117]

Answer:

  • 32.6 cm³

Step-by-step explanation:

The volume formula

  • V = Bh

Given

  • B = 8.15 cm² and h = 4 cm

Find the volume by substituting the values into formula

  • V = 8.15*4 = 32.6 cm³
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2 years ago
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When Samuel commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 32 minutes and a
k0ka [10]

Answer:

z=\frac{x-\mu}{\sigma}

And we can find the nnumber of deviations from the mean for each limit given:

z_1 = \frac{17-32}{5} = -3

z_2= \frac{47-32}{5} = 3

So we are 3 deviation from the mean and using the empirical rule we know that within 3 deviations from the mean we have 99.7% of the values

Step-by-step explanation:

Let X the random variable that represent the amount of time it takes him to arrive, and for this case we know the distribution for X is given by:

X \sim N(32,5)  

Where \mu=32 and \sigma=5

We want to find this probability:

P(17

And we can use the z score formula given by:

z=\frac{x-\mu}{\sigma}

And we can find the nnumber of deviations from the mean for each limit given:

z_1 = \frac{17-32}{5} = -3

z_2= \frac{47-32}{5} = 3

So we are 3 deviation from the mean and using the empirical rule we know that within 3 deviations from the mean we have 99.7% of the values

8 0
3 years ago
Round your answer to the nearest hundredth.
iren2701 [21]

Given b=4 and ∠β=20°,

a = 10.98991

c = 11.69522

∠α = 70° = 1.22173 rad = 7/18π

h = 3.75877

area = 21.97982

perimeter = 26.68513

inradius = 1.64735

circumradius = 5.84761

a

b

c

Calculation Steps

The following is one way to perform the calculation. It may not be the best way.

c =

b

sin(β)

= 11.69522

a = √c2 - b2

= √11.6952176006522 - 42

= √120.77811472661

= 10.98991

∠α = 90° - ∠β

= 70° = 1.22173 rad = 7/18π

area =

a × b

2

=

10.989909677818 × 4

2

= 21.97982

perimeter = a + b + c

= 10.989909677818 + 4 + 11.695217600652

= 26.68513

inradius =

a × b

a + b + c

=

43.959638711274

26.685127278471

= 1.64735

circumradius =

c

2

=

11.695217600652

2

= 5.84761

- ror

8 0
3 years ago
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