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2 years ago

Solve for x: -7x+2=-4x-7

Mathematics

1 answer:

Zielflug [23.3K]2 years ago

5 0

Answer: x = 3

Step-by-step explanation:

First you need to start by adding positive 4x to both sides since the 4x is a negative. 4x + (-7x) = -3x. Then it is just simply -3x+2 = -7. Since 2 is a positive number subtract both both sides by 2. Then you should get -3x = -9. Then divide both sides by -3 and the answer is x = 3.

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What is the domain ??

prohojiy [21]

Answer:

[-8, 6]

Step-by-step explanation:

Domain is the x values. Look at the smallet x value, in this case -8, and the largest, in this case 6, and write them like a point using [] not (). You use [ or ] for numbers and ( or ) for infinity signs.

7 0

2 years ago

Help please ..............

Cloud [144]

Answer:

x = 437.3 ft

Step-by-step explanation:

The angle at the top of the triangle = 90° - 29° = 61°

Using the sine ratio in the right triangle

sin61° = $\frac{opposite}{hypotenuse}$ = $\frac{x}{500}$

Multiply both sides by 500

500 × sin61° = x, hence

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3 years ago

Read 2 more answers

Dr. Robbins took the elevator to the 18th floor. He went back down 7 floors, up 2 floors, and down 5 floors. What floor is he no

zvonat [6]

Answer:

the 8th floor

Step-by-step explanation:

you just add and subtract so 18-7 +2 -5 = 8

3 0

2 years ago

1 point

Dimas [21]

Answer:

The simplest radical form is $9\sqrt{5}$ ⇒ (c)

Step-by-step explanation:

To simplify any square root;

Factorize the number under the root using prime numbers

Take out the root any number repeated twice as one number

Examples:

1. Simplify $\sqrt{8}$

factorize 8 using prime numbers

8 = 2 × 2 × 2, then $\sqrt{8}=\sqrt{(2)(2)(2)}$

Take two of 2 out the root, then $\sqrt{8}=2\sqrt{2}$

2. Simplify $\sqrt{18}$

factorize 18 using prime numbers

18 = 2 × 3 × 3, then $\sqrt{18}=\sqrt{(2)(3)(3)}$

Take the two 3 out the root, then $\sqrt{18}=3\sqrt{2}$

Let us simplify $3\sqrt{45}$

∵ 45 = 3 × 3 × 5

∴ $3\sqrt{45}=3\sqrt{(3)(3)(5)}$

→ Take the two 3 out by one 3

∴ $3\sqrt{45}=3(3)\sqrt{5}$

→ Multiply the numbers out the root

∴ $3\sqrt{45}=9\sqrt{5}$

∴ The simplest radical form is $9\sqrt{5}$

8 0

2 years ago

Jon's closet has 3 black shirts, 8 blue shirts, 6 black pants and 7 blue pants. He wants to determine the probability of selecti

algol [13]

Answer:

Jon did determine the probability correctly.

Step-by-step explanation:

In Jon's closet, there are a total of 24 clothes. Among those pieces of clothing, there are a total of 9 out of 24 clothes that are black. There are also 11 shirts out of 24 clothes.

When a probability has OR in it, it means to add.

11/24 plus 9/24 gives you 20/24.

Therefore, Jon is correct.

3 0

2 years ago