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abruzzese [7]
3 years ago
10

PLEASE HELP ITS DUE IN ONE HOUR AHH!!! The length of a rectangle is 5 inches shorter than three times the width. The perimeter i

s 46 inches. Write and solve an equation to find the dimensions of the rectangle.​ no seriously a HOUR PLEASE HELP ILL OFFER FREE QUESTION ANSWER AT LOW COST JUST PLEASE

Mathematics
1 answer:
Brrunno [24]3 years ago
8 0
<h2>Hey... </h2>

Brainly wasn't letting me post the answer. So I posted the screenshot instead.

<em><u>Hope this helps you...</u></em>

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3. Which of the following quadratic equations has no solution? A) 0 = −2(x − 5)2 + 3 B) 0 = −2(x − 5)(x + 3) C) 0 = 2(x − 5)2 +
klemol [59]

Answer:

D) 0 = 2(x + 5)(x + 3)

Step-by-step explanation:

Which of the following quadratic equations has no solution?

We have to solve the Quadratic equation for all the options in other to get a positive value as a solution for x.

A) 0 = −2(x − 5)2 + 3

0 = -2(x - 5) × 5

0 = (-2x + 10) × 5

0 = -10x + 50

10x = 50

x = 50/10

x = 5

Option A has a solution of 5

B) 0 = −2(x − 5)(x + 3)

Take each of the factors and equate them to zero

-2 = 0

= 0

x - 5 = 0

x = 5

x + 3 = 0

x = -3

Option B has a solution by one of its factors as a positive value of 5

C) 0 = 2(x − 5)2 + 3

0 = 2(x - 5) × 5

0 = (2x -10) × 5

0 = 10x -50

-10x = -50

x = -50/-10

x = 5

Option C has a solution of 5

D) 0 = 2(x + 5)(x + 3)

Take each of the factors and equate to zero

0 = 2

= 0

x + 5 = 0

x = -5

x + 3 = 0

x = -3

For option D, all the values of x are 0, or negative values of -5 and -3.

Therefore the Quadratic Equation for option D has no solution.

3 0
3 years ago
The Sureset Concrete Company produces concrete. Two ingredients in concrete are sand (costs $6 per ton) and gravel (costs $8 per
Maksim231197 [3]

Answer:

The Sureset Concrete Company

The tons of gravel and sand that should be purchased each day are:

Sand = 800 tons

Gravel = 700 tons

Step-by-step explanation:

Two ingredients for producing concrete = sand and gravel

Cost of sand per ton = $6

Cost of gravel per ton = $8

Sand and gravel = 75% of the concrete

Therefore 25% (100 - 75%) will be made up of cement and water

Tons of concrete produced each day = 2,000

Sand and gravel = 1,500 (2,000 * 75%)

Sand <= 40% of 2,000 = 800 tons

Gravel => 30% of 2,000 = 700 (1,500 - 800) tons

To minimize costs,  800 tons of gravel and 700 tons of sand should be purchased each day.

Total cost incurred daily for both sand and gravel = $10,400 (800 * $6 + 700 * $8)

3 0
3 years ago
It take Rick 5 minutes to wash 4 dishes. If he continue to work at this rate.how many minutes will it take Rick to wash 24 dishe
juin [17]

5 minutes         x minutes

---------------  =   -------------

4 dishes           24 dishes


using cross products

5 * 24 = 4 * x

divide each side by 4

5*24/4 = x

30=x

It will take 30 minutes

4 0
3 years ago
Is this right? I tried I don’t get math
sweet [91]

its right!!

you're doing great :)

8 0
2 years ago
60°<br> Х<br> 48°<br> 72°<br> X-<br> degrees
eimsori [14]

Answer:

132

Step-by-step explanation:

<em>Theorem:</em>

<em>The measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.</em>

x = 60° + 72°

x = 132°

5 0
3 years ago
Read 2 more answers
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