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spin [16.1K]
3 years ago
14

3x+3y+2z=11 3x+y–z=8 – 2x–y+2z=7

Mathematics
1 answer:
Pavel [41]3 years ago
3 0

Answer:

jv

Step-by-step explanation:

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Andy has 9 math books and 6 reading books. If he wants to distribute them evenly among some bookshelves so that each has the sam
andrew11 [14]

Answer:

3 is the greatest number of book shelves Andy can use.

Step-by-step explanation:

You can solve this by finding the greatest common factor of 9 and 6, which turned out to be 3.

6/3 = 2 (reading books per shelf)

9/3 =3 (math books per shelf)

Every shelf there are 2 reading books and 3 math books.

4 0
3 years ago
Lisa is buying a computer for $1,500. The sales tax rate is 8.5%. Which expression should be used to calculate t, the total cost
Sveta_85 [38]

Answer:

<h3>t=$1627.5</h3>

Step-by-step explanation:

Step one:

given data

price of computer= $1500

sales tax= 8.5%

Step two

Let us compute the amount in tax

tax= 8.5/100*1500

=0.085*1500

=$127.5

Let the total cost be t

hence

t=1500+0.085*1500

t=1500+127.5

t=$1627.5

6 0
3 years ago
Fill in the missing values to make the equations true.(a) log, 7 + log2 5 = log2음Х8(b) log, 8 - log, I = log,7(c) log, 4 = 2log,
Zielflug [23.3K]

(a).

Simplify the expression to obtain the value at missing place.

\begin{gathered} \log _27+\log _25=\log _2(7\cdot5) \\ =\log _235 \end{gathered}

Blank space: 35

(B).

Simplify the expression to obtain the value of missing place.

\log _9(\frac{8}{7})=\log _98-\log _97

Blank space : 7

(C)

Simplify the expression to obtain the value at missing place.

\begin{gathered} \log _74=\log _7(2)^2 \\ =2\log _72 \end{gathered}

Blank space: 2

8 0
1 year ago
Find the solutions of x and y.
sladkih [1.3K]

Answer:

x = 15, y = 4

Step-by-step explanation:

By Basic proportionality theorem, we have:

x/ 5 = 18/6

x = (18*5)/6

x = 90/6

x = 15

Again By Basic proportionality theorem, we have:

12/y = 18/6

y = (12*6)/18

y = 72/18

y = 4

6 0
3 years ago
Small cubes with edge lenghts of 1/4 will be packed into the rectangular prism how many small cubes will be needed to completley
Olegator [25]

Answer:

9216

Step-by-step explanation:

number of small cubes that would fill the prism = volume of prism / volume of small cubes

volume of a prism = length x width x height

3 x 6 x 8 = 144

volume of cube = length³

(1/4)³ = 1/64

144 ÷ 1/64

144 x 64 = 9216

6 0
3 years ago
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