3 years ago

Solve for x.

2 answers:

7 0

Use the quadratic formula to solve. the answer is the third one down

x= -sqrt10 - 4 and sqrt10 - 4

or in their notation above x= -4+/-10--sqrt

Dmitrij [34]3 years ago

7 0

Answer:

Step-by-step explanation:

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ss7ja [257]

291.6 or rounded 292 miles

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4 years ago

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45% of all 1st graders at Sierra Elementary School are female students. This year there are 54 female 1st graders at Sierra Elem

Anit [1.1K]

Answer:

There are 120 1st graders at Sierra Elementary School this year

Step-by-step explanation:

Let n represent the total number of 1st graders at Sierra Elementary School

Since 45% of all 1st graders at Sierra Elementary School are female students and this year there are 54 female 1st graders, 45% of n is equal to 54

→ n( $\frac{45}{100}$ ) = 54

→ 45n = 5400

→ n = 120

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3 years ago

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Factor out the greatest common factor. <br><br> x^3-3x^2-x

Andrews [41]

Answer:

Factor out the greatest common factor.

x^3-3x^2-x

→ x(x^2-3x-1)

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3 years ago

4 [ 4 . 5 - 2 ( 1 . 2 ) ]<br> sorry i don't like to do my work

Vinil7 [7]

Answer:

15.6

Step-by-step explanation:

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3 years ago

4. Julissa can unload a ship’s cargo twice as fast as Chris. Together, they can unload the cargo in 6 hours. How long would it t

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Let x equals to the time can chris unload the ship’s cargo

2x equals to the time can julissa unload the ship’s cargo

The can be solve by establishing an equation that they can do the job in 6 hours

(1/x) + (1/2x) =1/ 6

X = 9 hrs can chris do the job alone

2x = 18 hrs can julissa do the job alone

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4 years ago