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2 years ago

13

wallpaper cost $2 per square yard how much would it cost to cover a rectangular wall that measures 15 feet by 21 feet

1 answer:

zlopas [31]2 years ago

6 0

The area of the wall is (15-ft x 21-ft) = 315 square feet

That's the easy part. Now you have to figure out how many
<em>square yards</em> that is.

9 square feet = 1 square yard.

315 square feet = 315/9 = 35 square yards.

The cost of the wallpaper is (35) x ($2) = <u>$70</u> .

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Javier drove 45 miles. this represents 60% of his entire rode trip. what is the total number of miles in javier's trip?

gtnhenbr [62]

45 ÷ .60 = 75

75 miles is the total

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2 years ago

Find two complex numbers that have a sum of i10 a different of -4and a product of -29

lianna [129]

<h2>-2+5i and 2+5i</h2>

Step-by-step explanation:

Let the complex numbers be $a+ib\textrm{ and }c+id$ .

Given, sum is $10i$ , difference is $-4$ and product is $-29$ .

$(a+c)+i(b+d)=10i$ ⇒ $a+c=0,b+d=10$

$(a-c)+i(b-d)=-4$ ⇒ $a-c=-4,b-d=0$

$a=-2,c=2,b=5,d=5$

$(a+ib)(c+id)=(-2+5i)(2+5i)=-4-25=-29$

Hence, all three equations are consistent yielding the complex numbers $-2+5i\textrm{ and }2+5i$ .

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2 years ago

A caterer makes 3 extra sandwhiches for every 20 sandwhiches a customer orders. What is the ratio of ordered sandwiches to extra

VMariaS [17]

You can solve this by making a proportion.

$\frac{3}{20} = \frac{x}{184}$

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2 years ago

The binomial (y − 2) is a factor of y2 − 10y + 16. What is the other factor?

PtichkaEL [24]

Answer:

$\left(y-8\right)$

Step-by-step explanation:

$y^2-10y+16$

$=\left(y^2-2y\right)+\left(-8y+16\right)$

$y^2-2y$

$=yy-2y$

$=y\left(y-2\right)$

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$=-8y+8\cdot \:2$

$=-8\left(y-2\right)$

$=y\left(y-2\right)-8\left(y-2\right)$

$=\left(y-2\right)\left(y-8\right)$

The other factor is:

$\left(y-8\right)$

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2 years ago

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lyudmila [28]

Answer:

Choice C.

Step-by-step explanation:

You already have two sides and two angles. Now you need the other two sides that include the angle. Choice C is correct.

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2 years ago

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