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3 years ago

I need help on this question

Mathematics

1 answer:

egoroff_w [7]3 years ago

8 0

25 is the answer hope it helped

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-2+y=9 3x-7y=3 solve the system by the substitution

kherson [118]

Hello from MrBillDoesMath!

Answer:

x = 80/3 ( 26 2/3)

y = 11

Discussion:

Step 1:

-2 + y = 9 => add 2 to both sides

2 + -2 + y = 9 +2 =>

y = 11

Step 2:

Substitute y = 11 (from Step 1) into

3x - 7y = 3 =>

3x - 7(11) = 3 => y = 11 from Step 1

3x - 77 = 3 => add 77 to both sides

3x - 77 + 77 = 3 + 77 =>

3x = 80 =>

x = 80/3

Thank you,

MrB

3 0

3 years ago

05.01)A company makes triangular plates for individual slices of pizza. For each plate, the base is 5 inches and the height is 1

andrew-mc [135]

5×16 $\frac{5x16}{2}$ 2=the answer

3 0

3 years ago

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(7s – 8s⁴ – 3) + (-4s – 6s⁴ – 2s²)

klasskru [66]

The simplified expression is: -14s⁴-2s²+3s-3.

First group all the like terms together.

(-8s⁴)+(-6s⁴)=-14s

-2s

7s+(-4s)=3s

-3

Then put the expression back together, starting with the term that has the largest exponent, then working your way down. You would then get: -14s⁴-2s²+3s-3.

4 0

3 years ago

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The diameter of the Sun is about 1.4 x 106 km. The diameter of the planet

den301095 [7]

Answer:

1.17*10²

Step-by-step explanation:

Diameter of the sun is about 1.4 × 10⁶ km

1.4*10⁶ km = 1,400,000

Diameter of the planet venus is about 12000 km

12000 km = 1.2 × 10⁴

Ratio of the diameters

Sun : Venus

1.4 × 10⁶ km : 1.2 × 10⁴

1.4 × 10⁶ km / 1.2 × 10⁴

1.4 / 1.2 × 10^6-4

1.166 × 10²

Approximately

1.17 × 10²

7 0

2 years ago

Which point on the graph shows the price of 6 ounces of cheese? Use the formula y=x÷2 to find y when x is 6.

Gwar [14]

Answer: The required point is A(6, 3) in the attached graph.

Step-by-step explanation: We are to find the point on the given graph that shows the price of 6 ounces of cheese.

The formula to be used is given by

$y=x\div 2\\\\\Rightarrow y=\dfrac{x}{2}~~~~~~~~~~~~~~~~(i).$

Given that,

when x = 2 then y = 1. That is, price of 2 ounces of cheese is $1.

when x = 7 then y = 3.5. That is, price of 7 ounces of cheese is $3.5.

when x = 14 then y = 7. That is, price of 14 ounces of cheese is $7.

Therefore, these points satisfy the given relation (i).

Hence, if x = 6, then from equation (i), we have

$y=\dfrac{x}{2}=\dfrac{6}{2}=3.$

Thus, the price of 6 ounces of cheese is &3. This gives that the required point is A(6, 3) on the graph attached below.

8 0

3 years ago

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