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Ket [755]
3 years ago
8

Explain how to estimate 368+231 in two ways

Mathematics
2 answers:
VLD [36.1K]3 years ago
8 0
1st way= Round your SUM to the closest. Example: 44 is close to 40 since its not 45 yet.
DiKsa [7]3 years ago
7 0
1st way. 368 is closest to 370
2nd way. 231 is closest to 230
3rd way. Your sum will be 699, Closest to 700.
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Solve for x. Round to the nearest tenth, if necessary.
natka813 [3]

Answer:

25.5

Step-by-step explanation:

first find angle E.

remember, all angles in a triangle always add up to 180 degrees.

E = 180 - 90 - 20 = 70 degrees

now we use the law of sines.

ED/sin(20) = DC/sin(70) = EC/sin(D)

EC = x

sin(D) = sin(90) = 1

24/sin(70) = x/1 = x

x = 25.5

8 0
2 years ago
What is the volume of aa circle with the radius of 1?
patriot [66]

Answer:

3.14159 (pi)

Step-by-step explanation:

1^1=1*3.14=3.14

7 0
3 years ago
In the diagram, point P is a point of tangency. Find the radius r of circle O.​
vlabodo [156]

Answer:

r = 12

Step-by-step explanation:

From the figure attached,

QP is a tangent to the circle O at the point P.

Therefore, by the property of tangency,

OP ⊥ QP

By applying Pythagoras theorem In right triangle QPO,

(Hypotenuse)² = (Leg 1)² + (Leg 2)²

(OQ)² = (OP)² + (PQ)²

(25 + r)² = (35)² + r²

625 + r² + 50r = 1225 + r²

50r = 1225 - 625

50r = 600

r = 12

Therefore, r = 12 units is the answer.

4 0
3 years ago
What is the developed form of 2(3x-10)
vovikov84 [41]
The first step to finding the developed form is to multiply each term in the parenthesis by 2
2 × 3x - 2 × 10
now,, youll need to calculate the product of the first multiplication set
6x - 2 × 10
finally,, multiply the last set of numbers
6x - 20
this means that the correct answer to your question is 6x - 20.
let me know if you have any further questions
:)
6 0
3 years ago
Read 2 more answers
One number is six more than the other number . thesum of their squares is 90
Andreyy89

Answer:

the answer is 3 and 9. 9 is 6 greater than 3 and 9 squared and 3 squared added up give you 90.

7 0
1 year ago
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