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kumpel [21]
3 years ago
7

Amanda spent $73 on shirts. Tee Shirts cost $9 and long sleeve shirts cost $11. IN she bought a total of 7, then how many of eac

h kind did she buy?
Mathematics
1 answer:
pentagon [3]3 years ago
5 0

Answer:

2 tee shirts

5 sleeves

Step-by-step explanation:

Let the number of shortsleeves be S and longsleeves L.

Total is 7

That is

L + S = 7

Total money spent is $73, while shorts cost 9 and longs 11

Hence,

9S + 11L = 73

We now have two equations we can solve simultaneously. From the first equation,

L = 7 - S

Putting this in equation 2

9s + 11(7 - S) = 73

9s + 77 - 11S = 73

2S = 4

S = 2

Since s = 2, then L = 5

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14) A solid metallic block measures 1.5m long, 0.4m wide and 0.25m high. The solid is made of
GREYUIT [131]

Answer:

<h3>The answer is </h3><h3 /><h3>1125 Kg</h3>

Step-by-step explanation:

To find the mass in kg we must first convert the density from g/cm³ to kg/m³

That's 7.5 g/cm³ = 7500kg/m³

Density = mass / volume

Volume of block = 1.5 × 0.4 × 0.25

= 0.15m³

mass = Density × volume

= 7500 × 0.15

<h3>= 1125 Kg</h3>

Hope this helps you

7 0
3 years ago
The inside of tank is in the shape of a right rectangular prism. The base of the prism is 85 cm by 64 cm. What is the minimum he
Allisa [31]

Answer:

16.9 cm

Step-by-step explanation:

The volume of a prism = Area of base × height

For a rectangular prism, the base of the area = length × breadth

The volume of the liquid = 92 L

Since 1 L = 1000 cm³, 92 L = 92000 cm³

92000 = 85 × 64 × h

5440 h = 92000

h = 92000 ÷ 5440 = 16.9 cm

8 0
3 years ago
What equation in slope intercept form represents the line that passes through the two point? (6.9,5.9), (10.9,-2.1)
den301095 [7]

Answer:

y = 2x + b

I dont know what b is but the slope is 2 I think

6 0
3 years ago
How many solutions does the system have? y = -2x-4 \\\\ y = 3x+3
lakkis [162]

Answer:

The system has one solution.

Step-by-step explanation:

We have two equations:

y = -2x - 4

y = 3x + 3

Equalling them:

y = y

-2x - 4 = 3x + 3

5x = -7

x = -\frac{7}{5}

And

y = 3x + 3 = 3(-\frac{7}{5}) + 3 = \frac{-21}{5} + 3 = \frac{-21}{5} + \frac{15}{5} = -\frac{6}{5}

Replacing in the other equation we should get the same result.

y = -2x - 4 = -2(-\frac{7}{5}) - 4 = \frac{14}[5} - 4 = \frac{14}{4} - \frac{20}{5} = -\frac{6}{5}

So the system has one solution.

3 0
3 years ago
What is the third quartile of this data set?
Lena [83]

Answer:

40 so C would be your answer.

8 0
2 years ago
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