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Montano1993 [528]
2 years ago
7

Karen and Kristen were in a competition to see who could walk the

Mathematics
1 answer:
Gelneren [198K]2 years ago
5 0

Answer:

They each walked the same amount if you plug 7 into each of their expressions

Step-by-step explanation:

Karen walked 3(7) - 4 or 17 miles

Kristen walked 2(7) + 3 or 17 miles

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Explain how to use the distributive property to solve 48 divided by 3
KonstantinChe [14]

We have to divide 48 by 3 using distributive property.

Division using distributive property is used as it is much easier and accurate.

For dividing 48 by 3, we split first 48 as a multiple of 3 and 10

i.e. 48 = 30+18

Now divide again 18 as 3x5 +3

i.e. 48 = 30+15+3

By distributive property we have 48/3 = (30+15+3)/3 =30/3 +15/3 +3/3

Now easier to calclate this

30/3 = 10 : 15/3 =5 and 3/3 =1

Hence 48/3 = 10+5+1=16

8 0
3 years ago
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Brian has reduced his cholesterol level by 20% by following a strict diet and regular exercise. If his original level was 220, w
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220 x 20% (.20) = 44
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3 years ago
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Jermaine, Keira, and Leon are buying supplies for an art class. Jermaine bought 2 canvases, 4 tubes of paint, and 2 paint brushe
maria [59]

Answer:

canvas $3

tube of paint $5

paint brush $4

Step-by-step explanation:

We need to choose variables for the prices of the different items, translate the sentences into equations, and solve a system of equations.

1. Define variables

Let c = price of 1 canvas, t = price of 1 tube of paint, and b = price of 1 brush.

2. Translate sentences into equations

"Jermaine bought 2 canvases, 4 tubes of paint, and 2 paint brushes for $34."

2c + 4t + 2b = 34

"Keira spent $22 on 1 canvas, 3 tubes of paint, and 1 paint brush."

c + 3t + b = 22

"Leon already has plenty of paint, so he bought 3 canvases and 2 paint brushes for $17."

3c + 2b = 17

The system of equations is

2c + 4t + 2b = 34       Eq. 1

c + 3t + b = 22           Eq. 2

3c + 2b = 17               Eq. 3

Since the third equation has only the variables c and b, we use the first equations to eliminate variable t and give us an equation in only c and b.

3 * Eq. 1 - 4 * Eq. 2

2c + 2b = 14

c + b = 7            Eq. 4

Eq. 3 and Eq. 4 form a system of equations in two variables.

3c + 2b = 17      Eq. 3

c + b = 7          Eq. 4

Solve Eq. 4 for b.

b = 7 - c        Eq. 5

Substitute into Eq. 3.

3c + 2(7 - c) = 17

3c + 14 - 2c = 17

c = 3

Plug in c = 3 into Eq. 5.

b = 7 - 3

b = 4

Plug in c = 3 and b = 3 into Eq. 2.

c + 3t + b = 22           Eq. 2

3 + 3t + 4 = 22

3t + 7 = 22

3t = 15

t = 5

Answer:

canvas $3

tube of paint $5

paint brush $4

7 0
2 years ago
Which number is composite? 53,81,41,47,31<br><br> a. 31<br><br> b. 81<br><br> c. 41<br><br> d. 47
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answer

B 81

explanation

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3 years ago
what is the maximum volume of water a hamster bath can hold with a depth of 1 2/3, a length of 2 1/3 inches, and a width of 2 in
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The volume is 70/9 or 7 7/9.
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\frac{5}{3}  \times  \frac{7}{3}  \times  \frac{2}{1}  =  \frac{70}{9}
\frac{70}{9}  = 7 \frac{7}{9}
l \times w \times h = v
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