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3 years ago

The length of a rectangle is 1 less than twice the width.

2 answers:

vladimir1956 [14]3 years ago

7 0

$w-width\\2w-1-length\\w(2w-1)=2w^2-w-the\ area\\28\ ft^2-the\ area\\\\\text{The equation:}\\\\2w^2-w=28\qquad\text{subtract 28 from both sides}\\\\2w^2-w-28=0\\\\2w^2-8w+7w-28=0\\\\2w(w-4)+7(w-4)=0\\\\(w-4)(2w+7)=0\iff w-4=0\ \vee\ 2w+7=0\\\\w-4=0\qquad\text{add 4 to both sides}\\\boxed{w=4}\\\\2w+7=0\qquad\text{subtract 7 from both sides}\\2w=-7\qquad\text{divide both sides by 2}\\w=-3.5$

Alex73 [517]3 years ago

3 0

Answer:

equation = 2w^2- w- 28 =0

length =7

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Hhh idk what this is.

anzhelika [568]

Answer:

Step-by-step explanation:

a straight line has the degree of 180

so you minus 125 from 180 since you already know one angle and get 55 and thats your answer

8 0

3 years ago

Read 2 more answers

I need help solving these problems please.

ddd [48]

5. 15 x 3/4 = 11.25

6. 10 x 1/2 = 5

7. 11 x 2 = 22

8. 12/1.5 = 8

5 0

3 years ago

Reduce 7y + 2y 2 - 7 by 3 - 4y.

NARA [144]

Answer:

D. $2y^2+11y-10$ .

Step-by-step explanation:

Given:

We need to reduce $7y+2y^2-7$ by $3-4y$

Solution:

To reduce the equation means we need to subtract the one equation from other.

First we will arrange the equation n proper format we get;

$2y^2+7y-7$ ⇒ equation 1

Also Arranging other equation we get;

$-4y+3$ ⇒ equation 2

Now we will subtract equation 2 from equation 1 we get;

$(2y^2+7y-7)-(-4y+3)$

Now Applying distributive property for the sign we get;

$2y^2+7y-7+4y-3$

Now Arranging the like terms we get;

$2y2+7y-+4y-7-3\\\\2y^2+11y-10$

Hence the reduce form of the given equation is $2y^2+11y-10$ .

7 0

2 years ago

9·8·7! is equivalent to:<br><br> 9 x 8 x 7<br> 72 x 5,040<br> 504!

liq [111]

Answer:

$\large\boxed{9\cdot8\cdot7!=72\times5,040}$

Step-by-step explanation:

$n!=1\cdot2\cdot3\cdot...\cdot n\\\\\text{Therefore}\\\\7!=1\cdot2\cdot3\cdot4\cdot5\cdot6\cdot7=5,040\\\\9\cdot8=72\\\\\text{Finally:}\\\\9\cdot8\cdot7!=72\times5,040$

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2 years ago

Read 2 more answers

Eduardo rides his bicycle for 6 hours. What was Eduardo's average speed if he rides a distance of 84 miles? Use the formula d =

german

D = r x t
replace the d with 84 and replace the t with 6 hours
divide 84 by 6 = 84/6
get the quotient 14
84 = 14 x 6

5 0

3 years ago