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erma4kov [3.2K]
3 years ago
5

Select all true statements

Mathematics
1 answer:
pychu [463]3 years ago
6 0

Answer:

B,C,E are right statements

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What is the simplest form of 7/10 + 1/5
earnstyle [38]
Solutions 

1) Find the least common denominator of 7/10 and 1/5. 
10: 10 
5 : 5 , 10 
The least common denominator is 10. 

2) Make the denominator of 1/5 to 10. Multiply numerator and denominator by 2.

1 x 2 = 2 
5 x 2 = 10

3) New fraction 
7/10 + 2/10 

4) Add 
7+2 = 9 

9/10 is answer 

9/10 can not be simplified. It is already in reduced form. 
  


7 0
3 years ago
Read 2 more answers
A 15 foot flagpole casts an 11 foot shadow. At the exact same time a 28 foot tree casts a shadow. Which proportion would correct
marishachu [46]
The longer an object, the longer the shadow they cast at a given time of the day and vice versa. This is called direct proportionality. At the same time,

If 15 foot flagpole ---- casts 11 foot shandow
    28 foot tree -------- casts ?? foot shadow

The proportion would therefore be:

Length of shadow cast by tree = (28/15)*11 = 20.533 foot.
8 0
3 years ago
Dina planted a six-foot tree in her backyard which she expects to grow at the rate of 4 feet per year. Find the equation of the
Scrat [10]

Answer:

y = 6 + 4x

After 4 years, the tree would be 22 ft tall.

Step-by-step explanation:

Hi there!

Let x = the number of years that pass

Let y = the height of the tree (ft)

We're given that the 6-foot tree grows at a rate of 4 ft per year. This means that the height of the tree will be equal to 6 ft, the original height, plus another 4 ft every year that passes.

Height of tree = 6 feet + 4 feet × number of years that pass

y = 6 + 4x

To solve for how tall the tree would be 4 years after Dina plants it, replace x with 4, since 4 years have passed:

y = 6 + 4(4)

y = 6 + 16

y = 22

Therefore, the tree would be 22 ft tall.

I hope this helps!

8 0
2 years ago
Propane is stored in a cylindrical tank with a diameter of 15 inches and a height of 48 inches. Which equation could be used to
Virty [35]

Step-by-step explanation:

remember. the radius is always half the diameter.

volume of a cylinder

pi × r² × height

pi×7.5²×48 = pi×56.25×48 = 8,482.300165... in³

volume of a sphere

4/3 × pi × r³

and that volume should be the same as the cylinder. so,

4/3 × pi × r³ = pi×56.25×48

4/3 × r³ = 56.25 × 48

1/3 × r³ = 56.25 × 12

r³ = 56.25 × 36 = 7.5² × 6² = (7.5×6)² = 45² = 2025

r =  \sqrt[3]{2025}

which would be 12.65148998... in.

8 0
2 years ago
What is the answer to <br> 29=5a+4
DanielleElmas [232]
29 = 5a + 4
25 = 5a
5 = a
5 0
3 years ago
Read 2 more answers
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