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3 years ago

4x + 112° Find x. 9x + 72°

Mathematics

1 answer:

kolezko [41]3 years ago

6 0

Answer:x = 8 Step-by-step explanation:4x + 112 = 9x + 72-112 -1124x = 9x - 40-9x -9x-5x = -40----- -------- -5 -5x = 8

Explanation;

the answer is 5x=8

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(5x2+4xy-7)+(3x2+2xy+3)

Mrac [35]

Answer:

2 ( 4x² + 3xy - 2 )

Step-by-step explanation:

( 5x² + 4xy - 7 ) + ( 3x² + 2xy + 3 )

5x² + 4xy - 7 + 3x² + 2xy + 3

Combine like terms.

5x² + 3x² + 4xy + 2xy - 7 + 3

8x² + 6xy - 4

Factorize the answer.

2 ( 4x² + 3xy - 2 )

8 0

2 years ago

He value represented by the 2 in 423 is times the value represented by the 2 in 72.

melisa1 [442]

It is 1/10 times the value represented in the 2 in 423.
It is 10 times the value represented in the 2 in 72

3 0

4 years ago

According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22. A r

MaRussiya [10]

Answer:

The null hypothesis is $H_0: p = 0.22$

Step-by-step explanation:

According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22

This means that at the null hypothesis, it is tested if the proportion is in fact 0.22, that is:

$H_0: p = 0.22$

A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree or higher education level.

At the alternative hypothesis, it is tested if the proportion is lower than 0.22, that is:

$H_1: p < 0.22$

5 0

3 years ago

A scientist conducting an experiment creates a table to record the growth of two plants. The scientist uses the equations below

aivan3 [116]

Plant 1 in 5th week = 1.75 + 1/2 (5) = 1.75 + 2.5 = 4.25
Plant 2 in 5th week = 1.75 + 3/4 (5) = 1.75 + 3.75 = 5.50

So, Difference = 5.50 - 4.25 = 1.25

In short, Your Answer would be Option B

Hope this helps!

7 0

3 years ago

Read 2 more answers

Which hyperbola’s asymptote rectangle has the greatest perimeter?

Vitek1552 [10]

Answer:

The greatest perimeter is in (D) ⇒ the perimeter = 60 units

Step-by-step explanation:

* In the hyperbola

- The standard form of the equation of a hyperbola with

center (h , k) and transverse axis parallel to the x-axis is

(x - h)²/a² - (y - k)²/b² = 1

∵ the length of the transverse axis is 2a

∵ the length of the conjugate axis is 2b

∴ The perimeter of asymptote rectangle is 2(2a + 2b)

* Lets check the answers to find the greatest perimeter

A) (x - 4)²/11² - (y + 2)²/3² = 1

* Compare it with the standard form equation

∵ a = 11 ⇒ 2a = 22

∵ b = 3 ⇒ 2b = 6

∴ The perimeter = 2(22 + 6) = 56

B) (x - 2)²/4² - (y + 1)²/10² = 1

* Compare it with the standard form equation

∵ a = 4 ⇒ 2a = 8

∵ b = 10 ⇒ 2b = 20

∴ The perimeter = 2(8 + 20) = 56

C) (x + 5)²/5² - (y - 3)²/9² = 1

* Compare it with the standard form equation

∵ a = 5 ⇒ 2a = 10

∵ b = 9 ⇒ 2b = 18

∴ The perimeter = 2(10 + 18) = 56

D) (x - 7)²/8² - (y - 2)²/7² = 1

* Compare it with the standard form equation

∵ a = 8 ⇒ 2a = 16

∵ b = 7 ⇒ 2b = 14

∴ The perimeter = 2(16 + 14) = 60

* The greatest perimeter is in (D)

4 0

3 years ago

Read 2 more answers