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Ahat [919]
2 years ago
12

Please ' help me I need it please I'm begging you

Mathematics
1 answer:
vazorg [7]2 years ago
8 0

Answer: 0.75 (choice B)

=============================================

Explanation:

One way to set up the equation is to think of it like this

vertical/horizontal = vertical/horizontal

So we could say

(3.5)/(28) = x/6

Cross multiply and solve for x

3.5*6 = 28*x

21 = 28x

x = 21/28

x = (3*7)/(4*7)

x = 3/4 in fraction form

x = 0.75 in decimal form

-------------

Another possible set up equation is

28/6 = (3.5)/x

in this case I divided the horizontal sides together (28 and 6) and the vertical sides divide to form their own separate fraction as well.

Solving that equation should lead you to x = 3/4 = 0.75

Other equations are possible.

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A rectangular picture frame has an area of 45 square inches. If it has a length of 7 and 1/2 inches, what is its width?
svetlana [45]

Answer:

<h2>6</h2>

Step-by-step explanation:

To find the width/length when you know the area and the length or width, you just divide the area by the known side.

45/7.5 = 6

7 0
3 years ago
Read 2 more answers
g If a snowball melts so that its surface area decreases at a rate of 4 cm2/min, find the rate (in cm/min) at which the diameter
maks197457 [2]

Answer:

Rate of change of the diameter is equal to 0.053cm/min

Step-by-step explanation:

A snowball is of the shape of a sphere

Surface area of Sphere (S)= 4*pi*R^2

Rate of change of surface area

dS/dt = -4cm^2/min

the negative sign indicates the surface area is decreasing.

Radius = d/2 where d represents diameter

using this is the surface area equation

S = 4*pi*(d/2)^2

   = pi*d^2

dS/dt = 2*pi*d*d(d)/dt

4 = 2*pi*d*(d)/dt

d(d)/dt = 2/12*pi= \frac{1}{6pi} cm/min

so the rate of change of the diameter is equal to 0.053cm/min

5 0
2 years ago
Nadine has a cup of nickels and a cup of dimes.
WITCHER [35]

Answer: 135 nickels

Step-by-step explanation:

135 Nickels is $6.75 and 165 dimes is $16.50

That's 300 coins. $6.75 + $16.50 = $23.25

3 0
2 years ago
Which is the correct way to evaluate f(15) for the function f(x)=2(x+3)?
Thepotemich [5.8K]

Answer:

the first option

Step-by-step explanation:

Start by substituting 15 for x. Then, simplify to get f(15)=36.

cuz

f(x)=2(x+3)

f(15)=2(15+3)

= 2×18=36

gimme brainliest plz

3 0
3 years ago
You are moving from Winston-Salem to Seattle a trip of about 2000 miles. Your stuff will fill half of the truck and trailer show
Neporo4naja [7]
6.5 x 2000
13000

13000 • 1000
13

13 • 600
$7,800
3 0
3 years ago
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