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3 years ago

Solve each system using a matrix 7x+2y=5 13x+14y=-1

Mathematics

2 answers:

erik [133]3 years ago

8 0

The answer is X=1, y=-1 use

Svetach [21]3 years ago

7 0

Solve each system using a matrix

7x+2y=5

13x+14y=-1Solve each system using a matrix

7x+2y=5

13x+14y=-1

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Can 7/9 and 42/54 form a proportion

SOVA2 [1]

Answer:

yes

Step-by-step explanation:

42/54 = 6*7/6*9 = 7/9

7/9 = 42/54

8 0

3 years ago

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If the measure of 4 is equivalent to (2x-7) what is the value of x

mart [117]

Answer:

the value of x would be 5.5

Step-by-step explanation:

This is true by multiplying 2 by 5 and a half

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4 years ago

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Daniel hosted a party in which 15 to 45 people could attend and he charged $7 per person for admission. What is the range of adm

irina [24]

Answer:

c. [105,315]

Step-by-step explanation:

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4 years ago

PLSS HELP

Dmitry [639]

Answer:

$8,000

Step-by-step explanation:

Let the store earned $x in December.

Therefore,

Money spent to buy new inventory $=\frac{1}{4} x$

Remaining money $= x - \frac{1}{4} x =\frac{3}{4} x$

Money used to pay bills $=\frac{1}{2} \times \frac{3}{4} x=\frac{3}{8} x$

Money still left over = $3,000

Total money earned in December $= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{1}{4} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{2}{8} x+ \frac{3}{8} x+3,000$

$\therefore x= \frac{5}{8} x+ 3,000$

$\therefore x- \frac{5}{8} x=3,000$

$\therefore \frac{8x-5x}{8} =3,000$

$\therefore \frac{3x}{8} =3,000$

$\therefore x =3,000\times \frac {8}{3}$

$\therefore x =1,000\times 8$

$\therefore x =\$8,000$

Thus, total money earned in December is $8,000.

3 0

3 years ago

Express the ratio 7 days to 6 weeks as a decimal fraction

Mashcka [7]

Answer:

0.166

Step-by-step explanation:

We know that,

1 week = 7 days

i.e.

6 week = 7(6) days = 42 days

We need to express ratio 7 days to 6 weeks as a decimal fraction. So,

$R=\dfrac{7\ \text{days}}{42\ \text{days}}=\dfrac{1}{6}\\\\=0.166$

3 0

3 years ago