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3 years ago

Which set of coordinates satisfices the equation 3x-2y=15 and 4x-y=20

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

Answer:

x =5, y =0

Step-by-step explanation:

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How many times greater was the temperature in Miami (45) than the lowest in San Diego (25)

Greeley [361]

Answer:

The temperature in Miami is 9/5 times the temperature in San Diego.

Step-by-step explanation:

Ratios

To compare the temperature in Miami (45) with the temperature in San Diego (25), we use the division or ratio between both numbers:

$\displaystyle \frac{45}{25}$

Simplify the fraction dividing by 5:

$\displaystyle \frac{9}{5}$

Since the relation between them is 9/5, it means the temperature in Miami is 9/5 times the temperature in San Diego.

3 0

3 years ago

Someone help me for this algebra task please

Gekata [30.6K]

Answer:

200

Step-by-step explanation:

Substitute 15 for y

$\frac{1}{5} x - \frac{2}{3} (15) = 30$

$\frac{1}{5} x - 10 = 30$

$\frac{1}{5} x = 40$

$x = 200$

3 0

3 years ago

On the checkerboard, 4/10 of the pieces left are red. What fraction of the pieces left are black? Write the equation.

Alexeev081 [22]

Answer:

The fraction of black pieces left is $\frac{6}{10}$

Step-by-step explanation:

Given as :

On the checkerboard , The fraction of red pieces left = $\frac{4}{10}$

Let The fraction of black pieces left = x

So, The fraction of black pieces left = x = 1 - $\frac{4}{10}$

Or, x = $\frac{10-4}{10}$

Or, x = $\frac{6}{10}$

Hence The fraction of black pieces left is $\frac{6}{10}$ Answer

8 0

3 years ago

6a2 + 8a - 25 = -3 Using the Quadratic Formula

drek231 [11]

Answer:

−

6a^{2}+8a-25=-3

−

(

−

)

Step-by-step explanation:

0/3

4 0

2 years ago

Sedbober [7]

Answer:

2 10 8

Step-by-step explanation:

5 0

3 years ago

Which set of coordinates satisfices the equation 3x-2y=15 and 4x-y=20​

Which set of coordinates satisfices the equation 3x-2y=15 and 4x-y=20