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3 years ago

For what value of a does (1/9)a+1=81a+1•27^2-a

Mathematics

1 answer:

Yanka [14]3 years ago

8 0

Answer:19

Step-by-step explanation:

again add den mutiply subtaract

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Melissa is buying a new television at BuyMart. The store is offering the rebates shown below. Melissa chooses a television that

Vikki [24]

$755x.8.5% = $64.18
$755+$64.18=$819.18
819.18-60= $759.18 answer

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3 years ago

Read 2 more answers

A triangle has vertices on a coordinate grid at P(-10,1)P(−10,1), Q(-10,-7)Q(−10,−7), and R(-5,-7).R(−5,−7). What is the length,

lys-0071 [83]

Answer:

Step-by-step explanation:

Given the following coordinates of a triangle

P(-10,1)

Q(-10,-7)

R(-5,-7)

Required

Length of PQ

PQ = √(y2-y1)²+(x2-x1)²

From the coordinate;

x1 = -10, y1 = 1, x2 = -10 y2 = -7

Substitute

PQ = √(-7-1)²+(-10-(-10))²

PQ = √(-8)²+0²

PQ = √64

PQ = 8units

Hence the length of PQ in units is 8units

3 0

3 years ago

Help pls :)<br> .<br> .<br> .<br> If 3x-4y=4 & x+2y=18, then evaculate x^2 +y^2 +xy=

DanielleElmas [232]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}3x-4y=4\\x+2y=18&\text{multiply both sides by 2}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}3x-4y=4\\2x+4y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad5x=40\qquad\text{divide both sides by 5}\\.\qquad\boxed{x=8}\\\\\text{Put the value of x to the second equation:}\\\\8+2y=18\qquad\text{subtract 8 from both sides}\\2y=10\qquad\text{divide both sides by 2}\\\boxed{y=5}$

$\text{Put the values of x and y to the expression}\ x^2+y^2+xy:\\\\8^2+5^2+(8)(5)=64+25+40=129$

6 0

3 years ago

Jake makes 9 loaves of olive bread. He uses 30 grams of olives in each loaf. He started with 1 kilograms of olives. How many gra

Vilka [71]

<h3>Answer:</h3>

Jake has 730 grams left.

<h3>Step-by-step explanation:</h3>

Lets start by converting the kilograms to grams. Kilos to Base is x1000

So he started with 1000 grams of olives.

How much olives did he use?

9*30=270

SO the answer is 1000-270=730

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3 years ago

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netineya [11]

Answer:

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3 years ago