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3 years ago

Solve the system of equations below by elimination.

Mathematics

1 answer:

makvit [3.9K]3 years ago

7 0

Step-by-step explanation:

so you add 7 by 20 then answer ×I =

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Pls help brainliest, rattings, thanks, etc.

Kobotan [32]

Answer:

x< -2

Step-by-step explanation:

The dotted line is at x = -2

Since it is a dotted line there is no equals sign. It is shaded to the left, which means less than

x< -2

3 0

4 years ago

Jay buys 60 square feet of tile for $324. Later, he buys another 20 square feet of tile. How much does the extra tile cost?

muminat

40? Sorry I’m not so sure

6 0

3 years ago

You invest $5,000 in a savings account that earns 6% interest each year.

weqwewe [10]

A. Multiply $5000 by .06, and add it back to $5000 to get the total after one year. This is $5300.
B. Multiply the new amount, or $5300 by .06, and add it back to $5300 to get the total after 2 years. This is $5618.

A. $5300
B. $5618

4 0

4 years ago

Which of the following is true about the right triangle?

katrin2010 [14]

Option 1. $cos (a) = \frac{3}{5}$ , option 3. $sin (a) = \frac{4}{5}$ , and option 5. $tan (a) = \frac{4}{3}$ are true about the right triangle.

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Here the hypotenuse measures 15 units. Assume the other side measures x.

$15^{2} = x^{2} +9^{2} , x^{2} = 15^{2} -9^{2} .$

$x^{2} = 144, x= 12.$

Step 2:

$sin \theta = \frac{oppositeside}{hypotenuse} ,cos \theta = \frac{adjacentside}{hypotenuse} , tan \theta = \frac{oppositeside}{adjacentside}.$

For angle A, the opposite side is 12 units long, the adjacent side is 9 units long and the hypotenuse is 15 units long.

$sin (a) = \frac{12}{15} ,cos(a) = \frac{9}{15} , tan(a) = \frac{12}{9}.$

$sin (a) = \frac{4}{5} ,cos (a) = \frac{3}{5} , tan (a) = \frac{4}{3}.$

So option 1. $cos (a) = \frac{3}{5}$ , option 3. $sin (a) = \frac{4}{5}$ , and option 5. $tan (a) = \frac{4}{3}$ are true about the right triangle.

3 0

3 years ago

1 cm<br> 5 cm<br> 4 cm<br> 2 cm<br> What is the area of the figure?

ludmilkaskok [199]

Answer:

15cm

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers