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3 years ago

What is the solution for the system of equations {2x-3y-2z=-7, x-3y-3z=4, x-2y-z=-3

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

7 0

A suitable matrix calculation tells you (x, y, z) = (-8, -1, -3).

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What Fraction Of The Wall Did Kevin Paint?

Mila [183]

Kevin painted $\frac{1}{9}$ of the wall.

Solution:

Fraction of the wall painted by Elena = $\frac{5}{9}$

Fraction of the wall painted by Matthew = $\frac{3}{9}$

Fraction of the wall painted by Kevin = ?

Full wall can be taken as 1.

To find the wall painted by Kevin:

Rest of the wall = Full wall – painted by Elena – Painted by Matthew

$$=1-\frac{5}{9}-\frac{3}{9}$

$$=\frac{1}{1} -\frac{5}{9}-\frac{3}{9}$

To make the denominator same, multiply the numerator and denominator of the first term by 9.

$$=\frac{9}{9} -\frac{5}{9}-\frac{3}{9}$

$$=\frac{9-5-3}{9}$

$$=\frac{1}{9}$

Rest of the wall = $\frac{1}{9}$

Hence the kevin painted $\frac{1}{9}$ of the wall.

6 0

3 years ago

A baker is making bread dough. He uses 3 cups of flour for every 8 ounces of water. How many cups of flour will he use if he use

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

This is the fraction we use to solve this problem $\frac{Ounces}{Flour}$

Fractions are $\frac{8}{3}$ and $\frac{96}{x}$

We now ask ourselves

$8 * x = 96\\x = 12$

Since whatever we do to the numerator we have to to the same to the denominator, we multiply 3 and 12

$3 * 12 = x\\x = 36$

Hope this helps!

PLZZZ give brainliest

4 0

3 years ago

I'm so confused!!!!! Can somebody plz help me!!!plz

ZanzabumX [31]

I would suggest looking up a converter chart, I don't know all of them but I can help with some.
For yards to feet you have to divide by 3 because there are 3 feet in a yard.
For lbs, it's 16 oz in a pound, so divide by 16.
For miles to yards you divide by 1760 because there are 1760 yards in a mile.
I hope this helps a little bit.

8 0

3 years ago

36 : 52 = __:__ a) 18:26 b) 2:3 d) 2:2 d 9:13

kogti [31]

The answer to the following question is letter D

3 0

3 years ago

Use the Distributive Property to write each expression as an equivalent algebraic expression. (7 + a)3 Question 4 options: 3(7a)

AysviL [449]

Answer:

(B)21+3a

Step-by-step explanation:

An expression is said to be distributive when:

$(a+b)c=a \cdot c+b \cdot c$

Given the algebraic expression: (7 + a)3

Applying the distributive property

$(7 + a)3 = 7 \cdot 3+a \cdot 3\\=21+3a$

An equivalent expression is 21+3a.

The correct option is B

5 0

3 years ago