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4 years ago

Solve each system of equations algebraically 2x-y=9 3x+4y=-14

Mathematics

1 answer:

Cloud [144]4 years ago

4 0

The answer for 2x-y=9 is

x=1/2y + 9/2

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jonny [76]

67/100 is approximately 2/3 and 515 is approximately 510 so D. 2/3*510

6 0

3 years ago

Please help ASAP I’m confused<br><br> I WILL GIVE BRAINLIEST

neonofarm [45]

Answer: $x=4.7434$

Step-by-step explanation:

Use the pythagorean theorem $a^{2} +b^{2} =c^{2}$

plug in and solve

$x^{2} +3x^{2} =(3\sqrt{10}) ^{2}$

$4x^{2} =90$

$x^{2} =22.5$

$x=4.7424$

if you need to solve for the sides

3x = 3(4.7434) = 14.2302

7 0

3 years ago

Last week, the price, in dollars, of a gallon of gasoline was g. This week the price of gasoline per gallon increased by 5%. Whi

dmitriy555 [2]

The price of gasoline in this week is 1.05g. Option C

Step-by-step explanation:

Given,

The price of a gallon of gasoline = g in last week.

The price of gasoline increased by 5% this week.

To find the price of gasoline this week.

Formula

If an original price of an object a increased by b% the final price will be = a× $\frac{100+b}{100}$

So,

The price of gasoline in this week = g×1.05 = 1.05g

[ Please note: Here option C and E have same value. So, both are correct].

4 0

3 years ago

Evaluate the expression 0.4 cubed

nordsb [41]

Answer:

the answer to 0.4 cubed is 0.064

3 0

3 years ago

Read 2 more answers

HURRY PLZ 20 POINTS AND BRAINLIEST TO FIRST CORRECT ANSWER For dinner, Abelita chooses the Italian salad that costs $3.99 before

Viefleur [7K]

Answer: First, add 3.99 + 7.17. Then take the sum of those two numbers and multiply it by .05 to get 0.55. Since we are dealing money, round to the nearest hundredth to get .56. Add the sum of 3.99 and 7.17 (11.16) and .55 to get a total of 11.71. Therefore the total cost of their dinner, including tax, was $11.71.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers