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cestrela7 [59]
2 years ago
14

Pls help due soon I’ll be giving brainliest :))

Mathematics
2 answers:
Arada [10]2 years ago
8 0

Answer:

im pretty sure first question is 28.6 seconds

and second one is 276 total pounds

Step-by-step explanation:

The first one is 86 divided by 3 = 28.6 seconds

the second one is 23 x 12 = 276 pounds

Sergeeva-Olga [200]2 years ago
8 0

Answer:

7) 86 - 3x  8) 23 + 12w

Step-by-step explanation:

For question 7, the elevator's initial 'value' is 86 and the rate of change is 3 feet per second (x). The key word is 'descending'. Because of this the expression will subtract 3x instead of adding it. 86 - 3x

For question 8, the total weight is the crate's initial 23 and the extra (w) pounds for 12 boxes. 23 + 12w

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HELP ASAP You are preparing to move into a new house. The walls of your room will measure 10 feet by 12 feet.
faltersainse [42]

The Scale used on blueprint is 1 inches represents 4/3 feet

Scaling is the increase or decrease in size of a figure or object so as to create an image of that object.

Since on the blueprint, the walls measure 10 feet by 12 feet but on the blue print it measures 7.5 inches by 9 inches. Hence:

Scale used on blueprint is 7.5 inches = 10 feet or 9 inches = 12 feet

1 inches = 4/3 feet

The Scale used on blueprint is 1 inches represents 4/3 feet

Find out more at: brainly.com/question/20095188

7 0
2 years ago
Y’all help, I have no idea what sec is or how to find it
IRINA_888 [86]
Sec is the length of the hypotenuse divided by the length of the adjacent side.

Meaning divide 20/16

Meaning your secant or sec is 1.25 or 1 1/4
7 0
3 years ago
Juan is 4 feet tall. Marina is 52 inches tall.who is taller? explain your awnser.
mariarad [96]
Marina is taller because since Juan is 4 feet, he is 48 inches tall and Marina is 52 inches tall so Marina is taller than Juan.
6 0
2 years ago
Read 2 more answers
Rewrite the following quadratic functions in intercept or factored form. Show your work.
Dmitry [639]

<u>Answer: </u>

f(x) = 3(x+2)(x-2)

<u>Step-by-step explanation: </u>

We are given the following the quadratic function and we are to rewrite it in intercept or factored form:

f(x) = 3x^2 - 12

We can factorize the given function so taking the common factors out of it to get:

f(x)=3x^2 - 12

f(x) = 3 (x^2 - 4)

The term (x^2-4) is in the form a^2-b^2 so it can further be factorized to give:

f(x) = 3 (x+2)(x-2)

Therefore, the factored form of the given quadratic function is f(x) = 3(x+2)(x-2).


7 0
2 years ago
Read 2 more answers
Find the surface area of the cylinder in terms of pi. 9cm and 19cm
Natali [406]

Answer:

Surface area of cylinder= 211.5π

Step-by-step explanation:

Given,

Height of cylinder = 19cm

Diameter of cylinder = 9cm

i.e Radius of cylinder = diameter/2 = 9/2 = 4.5cm

Surface area of cylinder = 2πrh + 2πr²

Plug corresponding values of r and h in surface are formula.

Surface area of cylinder = 2πrh + 2πr² = 2π*4.5*19 + 2π*4.5²

Surface area of cylinder = 171π+40.5π = 211.5π

Hence we get surface area of cylinder= 211.5π


3 0
3 years ago
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