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ololo11 [35]
3 years ago
9

What is (7÷2+2×2×)×10

Mathematics
2 answers:
bulgar [2K]3 years ago
8 0
The answer is 75

I hope this helps. 

Have a great day. :)
Anon25 [30]3 years ago
4 0
<span>(7 ÷ 2 + 2 × 2)10
PEMDAS
Parentheses -> Exponents -> Multiplication/Division -> Addition/Subtraction
Left to right
</span>7 ÷ 2 = 3.5
2 x 2 = 4
4 + 3.5 = 7.5
7.5 x 10 = 75
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I'll give brainliest and points to whomever answers these two questions, thank you so much in advance!
podryga [215]

Answer:

Answer b of the first one

answer of q9

Step-by-step explanation:

(x+iy)(2−3i)=4+i

2x−(3x)i+(2y)i−3yi

2

=4+i

Real

2x+3y

​

​

+

Imaginary

(2y−3x)

​

​

i=4+i

Comparing the real & imaginary parts,

2x+3y=4--------------------------(1)

2y−3x=1----------------------------(2)

Solving eq(1)  &  eq(2),

4x+6y=8

−9x+6y=3

13x=5⇒x=

13

5

​

y=

13

14

​

∴(x,y)=(

13

5

​

,

13

14

​

)

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23

SIMILAR QUESTIONS

star-struck

If e

x+iy

=α+iβ, then x+iy is called logarithm of α+iβ to the base e.∴log

e

​

(x+iy)=log

e

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(re

iθ

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e

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r+iθ where r is modulus value of x+iy & θ be the argument of x+iy If i

α+iβ)

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Hard

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>

The modulus of (1 + i) (1 + 2i) (1 + 3i) is equal to

3 0
2 years ago
Read 2 more answers
Help pls :) 10 points
Alexeev081 [22]

Answer:

sq root of 64 = 8, sq root of 81 = 9, 8 and 9

Step-by-step explanation:

Since Sq root of 64 = 8 and Sq root of 81 = 9 it is known that sq root of 66 is between  8 and 9

7 0
2 years ago
Find the number of 3-digit numbers formed using the digits 1 to 9, without repetition, such the numbers either have all digits l
Tasya [4]

Answer: 120

Step-by-step explanation:

The total number of digits from 1 to 9 = 10

The number of digits from less than 5 (0,1,2,3,4)=5

Since repetition is not allowed so we use Permutations , then the number of 3-digit different codes will be formed :-

^5P_3=\dfrac{5!}{(5-3)!}=\dfrac{5\times4\times3\times2!}{2!}=5\times4\times3=60

The number of digits from greater than 4 (5,6,7,8,9)=5

Similarly, Number of 3-digit different codes will be formed :-

^5P_3=60

Hence, the required number of 3-digit different codes = 60+60=120

3 0
3 years ago
A finance magazine did a survey and found that the average American family spends $1,600 on a summer vacation. If the distributi
Andre45 [30]

Answer:

<h2> $1945</h2>

Step-by-step explanation:

Let X be the normal distribution

Kindly find attached a detailed annotation of the solution to the problem.

in the attached document, we found the value that corresponds to  80th percentile, hence we found the value such that the probability that the variable x is lower than this value is 0.8.

Also, from the calculation, we found that the value which corresponds to the 80th percentile is $1945

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3 years ago
F(x) has domain (-4,-2, 0, 2, 4) and range
CaHeK987 [17]

Answer:

1/2

Step-by-step explanation:

I just did the problem on edgenuity.

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