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love history [14]
3 years ago
12

Question 3. Simplify the following in four steps.

Mathematics
2 answers:
miss Akunina [59]3 years ago
3 0

Answer:

X ¹/₅

Step-by-step explanation:

X ⁷/₁₀

X ¹/₂

apply the exponent rule:

= X ⁷/₁₀ - ¹/₂

= X ¹/₅

podryga [215]3 years ago
3 0

Answer:

\frac{x {}^{7} }{10}  \div x {}^{ \frac{1}{2} }

=  \frac{x {}^{7} }{10}  \times \frac{1}{x {}^{ \frac{1}{2} } }

=  \frac{x {}^{ \frac{13}{2} } }{10}

=  \frac{ \sqrt{x {}^{13} } }{10}

=  \frac{x {}^{6} \sqrt{x}  }{10}

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Linda left home and drove for 2 hours. She stopped for lunch then drove for another 3 hours at a rate that is 10 mph higher than
Verdich [7]

Answer:

44 mph

Step-by-step explanation:

Given that:

Before lunch :

Time taken = 2hrs ; at speed = x mph

After lunch :

Time taken = 3hrs ; at speed = x + 10 mph

Total distance covered = 250 miles :

Distance = speed * time

(2 * x) + (3 * (x + 10)) = 250

2x + 3x + 30 = 250

5x + 30 = 250

5x = 250 - 30

5x = 220

x = 220/ 5

x = 44 mph

Rate before lunch is 44mph

6 0
3 years ago
What happens to the value of the expression 80-2r80−2r80, minus, 2, r as rrr decreases? Choose 1 answer: Choose 1 answer: (Choic
Pie

Answer:

(Choice B) B It decreases.

Step-by-step explanation:

According to the situation, the solution of the value of the expression is as follows

Let us assume

r         80 -2r

5        80 - 10 = 70

4        80 - 8 = 72

3        80 - 6 = 74

2        80 - 4 = 76

1         80 - 2 = 78

As we can from the above calculation that expression value risen if r value decreased

Therefore the correct option is B.

6 0
3 years ago
Read 2 more answers
1. Find 3 rational numbers between −1//3 and 1/−5
Alborosie

Step-by-step explanation:

-1×5 1×3

------ -----

3×5 -5×3

=

-5/15 -3/15

-5/15×4/4 ;

-3/15×4/4

=

-20/60 ;

-12/60

you can write any 8 rational no. between them

please mark as brainliest answer as it will also give you 3 pts

8 0
3 years ago
dressmaker had had 27 and yards of fabric if she want to make 5 dresses using the same amount how much could be used for each dr
expeople1 [14]
5.4 yards for each dress. This number lies between 5 and 6
8 0
3 years ago
Which relation is a function
Marina CMI [18]

Answer:

A.

Step-by-step explanation:

A function is a relation in which every input or value in the domain is paired with exactly one output or value in range.

Draw vertical to check if there is one output for one input.

Hope it is useful...

6 0
2 years ago
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