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3 years ago

20 points

Mathematics

1 answer:

djverab [1.8K]3 years ago

7 0

Answer:

To solve the system below by substitution, replace y in the second equation with 7−6x.

==> False

This statement is false. To solve the system by substitution, replace x in the second equation with 7−6x.

==> False.

This statement is false. To solve the system by substitution, replace y in the first equation with 7−6x.

==> False

This statement is false. To solve the system by substitution, replace y in the second equation with 6x−7.

==> True.

From the first equation, 6x-y=7

y= 6x-7

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Is 2 +43 negative or postive ?

Vlada [557]

Answer:

Positive...

2+43

equals 45

Step-by-step explanation:

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3 years ago

Zelina scored 10% higher on her second quiz than on her first quiz. On her third quiz, Zelina scored 20% higher than on her seco

pishuonlain [190]

Answer:

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Step-by-step explanation:

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3 0

3 years ago

.. pls help me....!!!!! Determine whether the point (-2,4) satisfy y<3x+5,y=3x+5 or y >3x+5..

nasty-shy [4]

Answer:

$y > 3\cdot x + 5$

Step-by-step explanation:

Let $A(x,y) = (-2,4)$ and $y = 3\cdot x + 5$ . Now we evaluate the given function at $x = -2$ :

$y = 3\cdot x + 5$ (1)

$y = 3\cdot (-2)+5$

$y = -6 +5$

$y = -1$

Which means that $y$ is less than the y-component of A. Therefore, the right answer is $y > 3\cdot x + 5$ .

7 0

3 years ago

Miriam is setting up a fishing game in a kiddie pool for her niece's birthday party. The pool has a circular base with a diamete

AURORKA [14]

Answer:

4.7 feet³ of water

Step-by-step explanation:

Diameter of 4 feet

Radius = 2 feet

Height = 0.75 feet

Formula for Volume = 2· $\pi$ ·radius·height

But she only wants to fill half, so divide by 2, cancels the 2 in the formula for volume, giving us: $\pi$ ·radius·height

$\pi$ ·2·0.75 = 4.71 feet³

7 0

3 years ago

Pls Help me with this answer

snow_lady [41]

Answer:

a. 5

b. -3

Step-by-step explanation:

a. (5*(8^1/3 + 27^1/3)^3)^1/4

= ((40^1/3 + 135^1/3)^3)^1/4

≈ ((3.42 + 5.13)^3)^1/4

≈ (8.55^3)^1/4

≈ 625^4

= 5

b. 64^-1/3*(64^1/3 - 64^2/3)

= 0.25*(4 - 16)

= 1/4 or 0.25 *-12

= -12*1 / 4

= -12/4

= -3

Hope this helped :3

8 0

3 years ago