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topjm [15]
3 years ago
14

How do u write 0.65 in a mixed numbwr

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0
<span>65/100 or 13/20. I hope this helped you, have a great day!</span>
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The estimated answer to a multiplication problem is 800,000. Which of the following expressions could result in this answer? Exp
EastWind [94]

Answer:

8,146 x 121

Step-by-step explanation:

This is a problem in which you need to measure your understading of "orders of magnitude."

If the estimated answer is 800000 that means that we are looking at a multiplication in the "order of" 8*10^5

You need to look at the "orders of magnitude" of the things you're multiplying. In the first case, we have 8146*12 that would be "of the order of" 8*10^3 times 10^1. So the whole multiplication would "of the order of" 8*10^4 or near 80000

The correct answer, 8,146 x 121, is because it's "of the order of" 8*10^3 times 10^2 and the gives us the 8*10^5 we need.

6 0
2 years ago
Can someone please answer?
Whitepunk [10]

Answer:

Step-by-step explanation:

another way to express 52+24 is 4(13+6)

7 0
2 years ago
Read 2 more answers
The price of an item increased from 20 to 30. The percentage of increase is pls help me I have exam after a week pls I hope you
Veronika [31]

Answer: 50% increase

Step-by-step explanation:

Think of 20 as 100%

Half of 20 is 10 which is 50% in this scenario.

30-20=10

This means that the price of the item increased by 50% or 10.

6 0
2 years ago
A telescope contains both a parabolic mirror and a hyperbolic mirror. They share focus ​, which is 46feet above the vertex of th
uranmaximum [27]

the center is at the origin of a coordinate system and the foci are on the y-axis, then the foci are symmetric about the origin.

The hyperbola focus F1 is 46 feet above the vertex of the parabola and the hyperbola focus F2 is 6 ft above the parabola's vertex. Then the distance F1F2 is 46-6=40 ft.

In terms of hyperbola, F1F2=2c, c=20.

The vertex of the hyperba is 2 ft below focus F1, then in terms of hyperbola c-a=2 and a=c-2=18 ft.

Use formula c^2=a^2+b^2c

2

=a

2

+b

2

to find b:

\begin{gathered} (20)^2=(18)^2+b^2,\\ b^2=400-324=76 \end{gathered}

(20)

2

=(18)

2

+b

2

,

b

2

=400−324=76

.

The branches of hyperbola go in y-direction, so the equation of hyperbola is

\dfrac{y^2}{b^2}- \dfrac{x^2}{a^2}=1

b

2

y

2

−

a

2

x

2

=1 .

Substitute a and b:

\dfrac{y^2}{76}- \dfrac{x^2}{324}=1

76

y

2

−

324

x

2

=1 .

7 0
2 years ago
Solve for X: x + 2 (1.5x - 6) = 16 (IF YOU CAN PLEASE TELL ME HOW TO SOLVE QUESTIONS LIKE THIS)
Alexeev081 [22]
4x - 12 = 16) 4x -12 + 12 = 16 + 12) 4x = 28) 4x/4 =28/4) x = 7
6 0
2 years ago
Read 2 more answers
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