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3 years ago

Solve the system of equations by the addition method. 3x - 5y = 7 8x + 10y = 14

Mathematics

1 answer:

erik [133]3 years ago

3 0

Answer:

(2, -1/5)

Step-by-step explanation:

I used the elimination method

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amm1812

X=6 you need to multiply by 2

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3 years ago

During summer, when the snow melts, the water level of the Yukon River increases. If the water level of the river increased by 7

kondaur [170]

Answer:

13 centimeters per day.

Step-by-step explanation:

We have been given that during summer, the water level of the river increased by 78 centimeters in 6 days. We are asked to find the water level increase rate in centimeters per day.

To find the water level increase rate per day, we will divide total increase by total days as:

$\text{Water level increase rate per day}=\frac{78\text{ cm}}{6\text{ days}}$

$\text{Water level increase rate per day}=\frac{13\text{ cm}}{\text{ day}}$

Therefore, the water level increase rate is 13 centimeters per day.

5 0

3 years ago

In 3 and 4, Classify each triangle by its sides and then by its angles

romanna [79]

Answer:

3. Sides: Equilateral

Angles: Acute

4. Sides: Isosceles

Angles: Right

Step-by-step explanation:

3. Sides: Equilateral because in an equilateral triangle all sides are equal.

Angles: Acute because in an acute triangle all angles are acute.

4. Sides: Isosceles because in an isosceles triangle two legs are equal.

Angles: Right because in a right triangle, one angle is right.

7 0

3 years ago

Can someone help me please?:)

Effectus [21]

Answer:

can you send it clearly it is blur see

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2 years ago

What is the GCF of 49 and 98

zheka24 [161]

Answer:

The other app my teacher told me to use to get the answer after i figure out says it is 1

Step-by-step explanation:

3 0

3 years ago