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Karolina [17]
3 years ago
8

Evaluate this expression. y + 7, if y = 12

Mathematics
2 answers:
photoshop1234 [79]3 years ago
6 0

Answer:

\huge{ \boxed{ \sf{19}}}

Step-by-step explanation:

\underline{ \sf{Given}} :  \sf{y = 12}

\underline{ \sf{To \: Find}} :   \sf{Value \: of \: the \: given \: expression}

\sf{y + 7}

plug the value of y

\mapsto{ \sf{12 + 7}}

Add the numbers: 12 and 7

\mapsto{ \sf{19}}

Hope I helped!

Best regards! :D

~\text{TheAnimeGirl}

NemiM [27]3 years ago
3 0
Y=5
Reasoning is because 7+5=12
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Which of the following terms correctly describe the figure given below? Check all that apply
Evgesh-ka [11]

Answer:

one of the answers is E,F

Step-by-step explanation:

I know this becuase that is a pyramid right there it is an solid but no prims or anything else on there


3 0
3 years ago
"A rectangle has a height of 5 cm and its base is increasing at a rate" of 3/2 cm/min. When its area is 60 cm2, at what rate is
sukhopar [10]

Answer:

The diagonal is increasing at the rate of 119/104cm/min of the given rectangle.

Step-by-step explanation:

Dimensions of the rectangle

Height = 5cm

Rate of base = 3/2 cm/min

Area = 60cm^2

We know the area of a rectangle of given by = base* Height

b*h = 60

b*5 = 60

b = 12cm

Applying Pythagoras theorem while drawing a diagonal to the rectangle

  b^2 +h^2 =  D^2\\

 5^2 +12^2 = 13^2

so our diagonal will be 13cm  

Upon differentiating the area of the rectangle  we get

b*h = A=60cm^2

using  the chain rule of differentiation

h*db/dt + b*dh/dt  = 0

b*dh/dt = -h*db/dt

12*dh/dt = -5*3/2

dh/dt = -5/8 cm//min

so the height of the rectangle is decreasing at the rate of -5/8cm/min

now we have all the measurements we need

b = 12 , db/dt = 3/2cm/min

h = 5 , dh/dt = -5/8 cm/min

b^2 +h^2  = D^2

Upon differentiating we get

2b*db/dt + 2h*dh/dt = 2D*dD/dt

b*db/dt + h*dh/dt = D*dD/dt

12*3/2 + 5*(-5/8) = 13*dD/dt

18 -25/8 = 13*dD/dt

\frac{144-25}{8} = 13*dD/dt

dD/dt = \frac{119}{104} cm/min

Therefore the diagonal is increasing at the rate of 119/104cm/min of the given rectangle.

6 0
3 years ago
Which is smaller -5 or -17
inessss [21]
-5 because it is closest to zero and -17 is farther than zero on a number line :) <span />
8 0
3 years ago
Read 2 more answers
THANK YOU!!
lilavasa [31]

Step-by-step explanation:

x° + 61°+ 68° + 104° = 180°

x° + 129°+104°=180°

x°+133°=180°

x°=180°-133°

x=47°

8 0
3 years ago
I don't like story problems...
Harlamova29_29 [7]
5 cm tall and still with a radius of 6 cm... do they want volume?
6 0
3 years ago
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