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antiseptic1488 [7]
3 years ago
13

Simplify the expression. Write the answer in scientific notation (7x10-6) (3x10-2​

Mathematics
1 answer:
shtirl [24]3 years ago
4 0

Answer:

21 X 10^-8 is the correct answer

Step-by-step explanation:

(7X3) X 10^(-6-2)

21 X 10^ -8

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Assign two variables for each problem, and write the equations. Do not solve.
Xelga [282]
Call the number of trumpet players "T" and the number of horn players "H".

We can use the given information to set up equations:

1."<span>the number of trumpet players is 4 times the number of French horn players"
T=4H

2. "</span><span>There are 35 trumpet and French horn players in the band."
T+H=35

If you were asked to solve you could now do it by substitution:
4H+H=35
5H=35
H=7
T=4H
T=4(7)
T=28</span>
7 0
3 years ago
. a) In a group of 75 students, 20 liked football only, 30 liked cricket only and 18 did not like any of two games? (i) How many
qaws [65]

i)50

<u>Steps</u>

30+20=50

ii)7

<u>Steps</u>

75-(30+20)-18

=75-(50)-18

=7

iii)20

<u>Steps</u>

From the available data from the question

iv)30

<u>Steps</u>

From the available data from the questionl

v)From the attcged image file

4 0
3 years ago
What is 2+2
ad-work [718]

Answer:

4

Step-by-step explanation:

2+2 is 4

5 0
3 years ago
Evaluate the equation.
Tomtit [17]

Answer:

C

Step-by-step explanation:

193b=212.3

193b/193=212.3/193

(divide by 193 to get the value of b)

193 cancels 193

b= 1.098445596

(round off to one decimal place)

b=1.1

Hope its helps ❤️

3 0
2 years ago
Read 2 more answers
Please help! I need answers for both questions it’s very confusing!
Lilit [14]

Answer:

for number 5 its:

-15 -8 8/9 -3.3

and for number 6 its:

-3.3 -8 8/9 and -15

also sorry if its wrong

5 0
2 years ago
Read 2 more answers
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