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lozanna [386]
3 years ago
12

Solve the system by the method of elimination.

Mathematics
2 answers:
posledela3 years ago
6 0

Answer:

<em><u>hope</u></em><em><u> </u></em><em><u>its helpful to uh</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

Fofino [41]3 years ago
6 0

Answer:

x=5, y = 9/5

Step-by-step explanation:

x+5y = 14

3x - 10y = -3

Multiply the first equation by 2

2(x+5y) = 2*14

2x+10y = 28

Add this to the second equation to eliminate y

2x+10y = 28

3x - 10y = -3

----------------------

5x + 0y = 25

Divide by 5

5x/5 = 25/5

x = 5

Now find y

x+5y =14

5+5y = 14

Subtract 5 from each side

5-5+5y = 14-5

5y = 9

Divide by 5

5y/5 = 9/5

y = 9/5

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There are 157.48 inches in 4 meters.

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Svetllana [295]

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9/2 inches or 4 1/2

Step-by-step explanation: Try to find the unit rate FIRST. Divide 2 on both sides and you will get that ONE INCH = 3/2 miles.

Since you need to know the distance for 3 inches, MULTIPLY both SIDES by 3, and you will get 3 INCHES = 9/2 MILES.

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3 years ago
Need Help with 44.. picture above
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Answer:

Ok:

Step-by-step explanation:

I see that you set up 90 miles = 60 mph * t, where you found out that t = 1.5. What what you needed to do was set 180 miles = 45 mph * t. This is because it is 45 mph for the <em>whole</em> trip. Then, you find that t = 4 hours. That that means that he spent 2.5 hours driving back. Then, we can do d=vt and find 90/2.5 as the speed he went home at. Which comes out to be 36 mph.

8 0
3 years ago
What number is equivalent to the expanded form (2 x 100) + (3 x 1) + (4 x 1/10) + (3 x 1/1,000
nikitadnepr [17]

The equivalent number to the given expanded form is 203.403

<u>Step-by-step explanation</u>:

To find the equivalent number of the expanded form, Use BODMAS rule.

B - bracket

O - of

D - division

M - multiplication

A - addition

S - subtraction

In the given equation, look for the BODMAS order to solve the expanded form:

<u>step 1</u>: solve the numbers inside the bracket.

(2*100)+(3*1)+(4*1/10)+(3*1/1000) = 200 + 3 + 4/10 + 3/1000

<u>step 2</u>: In the order of BODMAS, division comes before addition. So, Division has to be given priority and then addition should be performed.

200 + 3 + 0.4 + 0.003 = 203.403

6 0
4 years ago
Write the ratio of the first measurement to the second measurement. Compare in millimeters.
pochemuha

Answer:

<em>The ratio of the diameter of ball A to the diameter of ball B is 10:19.</em>

Step-by-step explanation:

<u>Ratios</u>

A ratio is a relation between two quantities and it's calculated as a division. For example, the ratio between 8 and 4 is 8:4 = 8 / 4 = 2.

We are given the diameters of two balls as follows:

The diameter of the ball​ A=30mm

The diameter of the ball​ B=5.7 cm = 57 mm

The ratio of the diameter of ball A to the diameter of ball B is 30:57. Dividing both numbers by 3, we have: ratio=10:19

The ratio of the diameter of ball A to the diameter of ball B is 10:19.

7 0
3 years ago
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