All categories

2 years ago

1.Solve the following system of equations:

Mathematics

1 answer:

Yuri [45]2 years ago

7 0

C. infinitely many solutions

You might be interested in

The original cost of a cell phone is x dollars. The phone is

uranmaximum [27]

Answer:

Step-by-step explanation:

I AM I HELPFUL

7 0

2 years ago

Question 1 (5 points)

worty [1.4K]

Answer:

0.5 is the answer to this

5 0

2 years ago

Read 2 more answers

Using the diagram, find the value of x.

saveliy_v [14]

Answer:

c are the correct answer

6 0

2 years ago

Michelle has 4 and 1/5 feet of yarn. She cuts the yarn into pieces that each measure 3/5 foot long. How many pieces of yarn did

dimulka [17.4K]

1/7 or 7

Step-by-step explanation:

IT might be Cuase 3/5÷ 21/5

3x5

5x21=

15/105 simplify and you get 1/7

7 0

2 years ago

PLEAZZZZZZZZZZ HELP ASAP

stich3 [128]

QUESTION 1

GIVEN:

$long \: base = 3 \times (short \: base)$

$height = (short \: base) - 2$

$area = 30 {in}^{2}$

IMPORTANT EQUATIONS

$trapezoid \: area = \frac{sum \: of \: bases}{2} \times height$

SOLVE:

$30 = \frac{short + long}{2} (short - 2)$
$30 = \frac{(short + 3short)}{2} \times (short - 2)$

$30 = \frac{4short}{2} (short - 2)$

$30 = 2{(short)}^{2} - 4(short)$

${short}^{2} - 2(short) - 15 = 0$

factor:

$(short - 5)(short + 3) = 0$

$short = 3 \: and \: - 5$
Negative five is not a reasonable answer, so we focus on the positive three and say that is the length of the short base.

so, the answers:

$short \: base = 3 \: in$

$long \: base = 3 \times 3 = 9 \: in$

$height = 3 - 2 = 1 \: in$

QUESTION 2

GIVEN
convert 3ft to inches.

$l = 32 + w$

$area = lw = 130 {in}^{2}$
or

$w = \frac{130}{l}$

substitute

$l = 32 + \frac{130}{l}$

solve for l:

${l}^{2} - 32 l- 130 = 0$
QUESTION 3

$x(x + 2) = 80$

solve for X

${x}^{2} + 2x - 80 = 0$
$(x - 10)(x + 8) = 0$

$x = 10 \: and \: - 8$

take the positive value since it's the only one that makes sense in this context.

so the two values are:

$10 \: and \: 8$

8 0

2 years ago