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3 years ago

Which Graph shows a system of equations with a solution at (2,-1)

Mathematics

2 answers:

zimovet [89]3 years ago

8 0

The one with the U shape going up, and the red line is tilting to the left that last picture

hjlf3 years ago

3 0

Answer:

its the 4 one with the parabola facing down and red line going through the y intercept -3

Step-by-step explanation:

a solution is the point of interception between 2 lines

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olga nikolaevna [1]

Answer:

Fraction of the original board left = $\frac{2}{15}$

Step-by-step explanation:

Let the length of the board is = l feet

Marty saws off $\frac{1}{5}$ of a wooden board.

Length of the board left = l - $(\frac{1}{5})l$

= $(\frac{4}{5})l$ feet

He saws off $\frac{3}{4}th$ of the remaining board,

Board left = $(\frac{4}{5})l-[(\frac{4}{5})l\times (\frac{3}{4})]$

= $\frac{4}{5}l-\frac{3}{5}l$

= $\frac{1}{5}l$ feet

He finally saws off $\frac{1}{3}$ rd of the remaining board.

Board left = $\frac{1}{5}l-[\frac{1}{5}\times \frac{1}{3}]l$

= $(\frac{1}{5}-\frac{1}{15})l$

= $\frac{2}{15}l$ feet

Fraction of the original board left = $\frac{\frac{2}{15}l}{l}$

= $\frac{2}{15}$

6 0

3 years ago

In a right triangle, angle C measures 40°. The hypotenuse of the triangle is 10 inches long. What is the approximate length of t

zmey [24]

Answer:

the answer is c uwU

Step-by-step explanation:

Here, base is the length of the side adjacent to angle and hypotenuse is the longest side of the right angle triangle.

6 0

2 years ago

Find the third side in simplest radical form

klasskru [66]

Answer:

$2 \sqrt{71} \: units$

Step-by-step explanation:

Given is a right angled triangle in which third side is the hypotenuse.

Therefore, by Pythagoras theorem:

$thid \: side = \sqrt{ {15}^{2} + ( \sqrt{59} )^{2} } \\ \\ = \sqrt{225 + 59} \\ \\ = \sqrt{284} \\ \\ = \sqrt{ {2}^{2} \times 71 } \\ \\ = 2 \sqrt{71} \: units$

3 0

3 years ago

The fish tank at Matthew's house holds 468 gallons but is leaking at a rate of 4 gallons per day. Ariana's fish tank holds 624 g

user100 [1]

468 plus 624 times 7 divided by 4 and you should get the amount of water in the two tanks

6 0

3 years ago

) Multiply. What is the product <br>(3 x 10^9) * (2 x 10^17) in scientific notation?

Tasya [4]

Answer:

6 ×10^26

hope it helped

have a good day mate

4 0

3 years ago

Read 2 more answers