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3 years ago

Solve for x. 0.3x – 2.1 / 2 = 0.4

Mathematics

2 answers:

zmey [24]3 years ago

5 0

Answer:

Step-by-step explanation:

0.3x – 2.1 / 2 = 0.4

0.3x - 2.1 = 0.4 (2)

0.3x = 0.8 + 2.1

x = <u>2.90</u>

0.3

x = 9.67

tangare [24]3 years ago

3 0

Is it not 0.4 bcjjrnfifjnfjfjfnnfifjdnndnd

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If the measure of DAC is x and the measure of CAB is (2x – 30), what is the value of x? (HINT** remember how we label angles, th

Scorpion4ik [409]

Answer:

Step-by-step explanation:

∠ BAD = 90° and

∠ DAC + ∠ CAB = ∠ BAD, that is

x + 2x - 30 = 90

3x - 30 = 90 ( add 30 to both sides )

3x = 120 ( divide both sides by 3 )

x = 40 → b

6 0

3 years ago

I need algebra help.....

Lubov Fominskaja [6]

Answer:

$y=4(3)^x$

Step-by-step explanation:

From the table given in the question,

x y Difference Ratio

1 12 - -

2 36 36-12 = 24 $\frac{36}{12}=3$

3 108 108-36 = 72 $\frac{108}{36}=3$

4 324 324-108 = 216 $\frac{324}{108}=3$

5 972 972-324 = 648 $\frac{648}{216}=3$

There is a common ratio of 3 in each successive term.

Therefore, data given in the table will represent an exponential function.

$y=a(b)^x$

For a point $(1, 12),$

$12=a(b)^1$

$ab=12$ ------(1)

For another point of the table $(2,36)$ ,

$36=a(b)^2$

$ab^2=36$ --------(2)

Equation (2) divided by equation (1)

$\frac{ab^2}{ab}=\frac{36}{12}$

$b=3$

From equation (1),

$3a=12$

$a=4$

Therefore, exponential function will be,

$y=4(3)^x$

7 0

3 years ago

Hello I need help with this question

Andreyy89

The answer is x=7. Since the two angles are corresponding. Then it would be 10x-2=9x+5. The answer would be x=7. Please mark me Brainleist

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2 years ago

You want to save $500 for a trip to Legoland you have planned in 6 months. Which inequality shows the least amount you must save

sladkih [1.3K]

Answer:

6x ≥ 500

Step-by-step explanation:

I took the test but also it means that in six months, you have to save that amount of money to get exactly or more than 500, so this would be the correct answer!

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3 years ago

Pls find the area to the second power.

Tom [10]

First of all gall, the end is NOT an exponent, its the unit of measurement for finding the area (thats square units)

Heres the answer:
31.5 square units.
Explanation:
The formula for the area of a triangle is bh/2
The formula for the area of a triangle is bh
(Use this formula and try to find the real explanation)

3 0

3 years ago

Read 2 more answers

Solve for x. 0.3x – 2.1 / 2 = 0.4 ​

Solve for x. 0.3x – 2.1 / 2 = 0.4